Merge branch 'BAEL-16646' into BAEL-16646-2

# Conflicts:
#	pom.xml

.gitignore

@@ -30,7 +30,7 @@ out/
 .DS_Store
 
 # Maven
-log/
+log/*
 target/
 
 # Gradle

akka-http/README.md

@@ -1,3 +1,7 @@
-## Relevant articles:
+## Akka HTTP
+
+This module contains articles about Akka HTTP. 
+
+### Relevant articles:
 
 - [Introduction to Akka HTTP](https://www.baeldung.com/akka-http)

akka-streams/README.md

@@ -1,3 +1,7 @@
+## Akka Streams
+
+This module contains articles about Akka Streams. 
+
 ### Relevant articles
 
 - [Guide to Akka Streams](https://www.baeldung.com/akka-streams)

algorithms-genetic/README.md

@@ -1,4 +1,8 @@
-## Relevant articles:
+## Genetic Algorithms
+
+This module contains articles about genetic algorithms. 
+
+### Relevant articles:
 
 - [Introduction to Jenetics Library](https://www.baeldung.com/jenetics)
 - [Ant Colony Optimization](https://www.baeldung.com/java-ant-colony-optimization)

algorithms-miscellaneous-1/README.md

@@ -1,4 +1,9 @@
-## Relevant articles:
+## Algorithms - Miscellaneous
+
+This module contains articles about algorithms. Some classes of algorithms, e.g., [sorting](/../algorithms-sorting) and
+[genetic algorithms](/../algorithms-genetic), have their own dedicated modules. 
+
+### Relevant articles:
 
 - [Validating Input With Finite Automata in Java](https://www.baeldung.com/java-finite-automata)
 - [Example of Hill Climbing Algorithm](https://www.baeldung.com/java-hill-climbing-algorithm)
@@ -6,4 +11,5 @@
 - [Binary Search Algorithm in Java](https://www.baeldung.com/java-binary-search)
 - [Introduction to Minimax Algorithm](https://www.baeldung.com/java-minimax-algorithm)
 - [How to Calculate Levenshtein Distance in Java?](https://www.baeldung.com/java-levenshtein-distance)
-- [How to Find the Kth Largest Element in Java](https://www.baeldung.com/java-kth-largest-element)
+- [How to Find the Kth Largest Element in Java](https://www.baeldung.com/java-kth-largest-element)
+- More articles: [[next -->]](/../algorithms-miscellaneous-2)

algorithms-miscellaneous-2/README.md

@@ -1,4 +1,9 @@
-## Relevant articles:
+## Algorithms - Miscellaneous
+
+This module contains articles about algorithms. Some classes of algorithms, e.g., [sorting](/../algorithms-sorting) and
+[genetic algorithms](/../algorithms-genetic), have their own dedicated modules. 
+
+### Relevant articles:
 
 - [Dijkstra Shortest Path Algorithm in Java](https://www.baeldung.com/java-dijkstra)
 - [Introduction to Cobertura](https://www.baeldung.com/cobertura)
@@ -8,3 +13,4 @@
 - [Create a Sudoku Solver in Java](https://www.baeldung.com/java-sudoku)
 - [Displaying Money Amounts in Words](https://www.baeldung.com/java-money-into-words)
 - [A Collaborative Filtering Recommendation System in Java](https://www.baeldung.com/java-collaborative-filtering-recommendations)
+- More articles: [[<-- prev]](/../algorithms-miscellaneous-1) [[next -->]](/../algorithms-miscellaneous-3)

algorithms-miscellaneous-3/README.md

@@ -14,4 +14,6 @@ This module contains articles about algorithms. Some classes of algorithms, e.g.
 - [A Guide to the Folding Technique in Java](https://www.baeldung.com/folding-hashing-technique)
 - [Creating a Triangle with for Loops in Java](https://www.baeldung.com/java-print-triangle)
 - [Efficient Word Frequency Calculator in Java](https://www.baeldung.com/java-word-frequency)
-- More articles: [[<-- prev]](/algorithms-miscellaneous-2) [[next -->]](/algorithms-miscellaneous-4)
+- [Interpolation Search in Java](https://www.baeldung.com/java-interpolation-search)
+- [The K-Means Clustering Algorithm in Java](https://www.baeldung.com/java-k-means-clustering-algorithm)
+- More articles: [[<-- prev]](/algorithms-miscellaneous-2) [[next -->]](/algorithms-miscellaneous-4)

algorithms-miscellaneous-4/README.md

@@ -1,4 +1,9 @@
-## Relevant articles:
+## Algorithms - Miscellaneous
+
+This module contains articles about algorithms. Some classes of algorithms, e.g., [sorting](/../algorithms-sorting) and
+[genetic algorithms](/../algorithms-genetic), have their own dedicated modules. 
+
+### Relevant articles:
 
 - [Multi-Swarm Optimization Algorithm in Java](https://www.baeldung.com/java-multi-swarm-algorithm)
 - [String Search Algorithms for Large Texts](https://www.baeldung.com/java-full-text-search-algorithms)
@@ -6,4 +11,5 @@
 - [Find the Middle Element of a Linked List](https://www.baeldung.com/java-linked-list-middle-element)
 - [Find Substrings That Are Palindromes in Java](https://www.baeldung.com/java-palindrome-substrings)
 - [Find the Longest Substring without Repeating Characters](https://www.baeldung.com/java-longest-substring-without-repeated-characters)
-- [Permutations of an Array in Java](https://www.baeldung.com/java-array-permutations)
+- [Permutations of an Array in Java](https://www.baeldung.com/java-array-permutations)
+- More articles: [[<-- prev]](/../algorithms-miscellaneous-3) [[next -->]](/../algorithms-miscellaneous-5)

algorithms-miscellaneous-5/README.md

@@ -1,5 +1,11 @@
-## Relevant articles:
+## Algorithms - Miscellaneous
+
+This module contains articles about algorithms. Some classes of algorithms, e.g., [sorting](/../algorithms-sorting) and
+[genetic algorithms](/../algorithms-genetic), have their own dedicated modules. 
+
+### Relevant articles:
 
 - [Converting Between Byte Arrays and Hexadecimal Strings in Java](https://www.baeldung.com/java-byte-arrays-hex-strings)
 - [Reversing a Binary Tree in Java](https://www.baeldung.com/java-reversing-a-binary-tree)
-- [Find If Two Numbers Are Relatively Prime in Java](https://www.baeldung.com/java-two-relatively-prime-numbers)
+- [Find If Two Numbers Are Relatively Prime in Java](https://www.baeldung.com/java-two-relatively-prime-numbers)
+- More articles: [[<-- prev]](/../algorithms-miscellaneous-4)

algorithms-sorting/README.md

@@ -12,3 +12,8 @@ This module contains articles about sorting algorithms.
 - [Shell Sort in Java](https://www.baeldung.com/java-shell-sort)
 - [Counting Sort in Java](https://www.baeldung.com/java-counting-sort)
 - [Sorting Strings by Contained Numbers in Java](https://www.baeldung.com/java-sort-strings-contained-numbers)
+- [How an In-Place Sorting Algorithm Works](https://www.baeldung.com/java-in-place-sorting)
+- [Selection Sort in Java](https://www.baeldung.com/java-selection-sort)
+- [Sorting Strings by Contained Numbers in Java](https://www.baeldung.com/java-sort-strings-contained-numbers)
+- [Radix Sort in Java](https://www.baeldung.com/java-radix-sort)
+- [Sorting a String Alphabetically in Java](https://www.baeldung.com/java-sort-string-alphabetically)

algorithms-sorting/pom.xml

@@ -28,6 +28,12 @@
             <version>${lombok.version}</version>
             <scope>provided</scope>
         </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-api</artifactId>
+            <version>${junit-jupiter-api.version}</version>
+            <scope>test</scope>
+        </dependency>
         <dependency>
             <groupId>org.assertj</groupId>
             <artifactId>assertj-core</artifactId>
@@ -52,6 +58,7 @@
         <commons-math3.version>3.6.1</commons-math3.version>
         <org.assertj.core.version>3.9.0</org.assertj.core.version>
         <commons-codec.version>1.11</commons-codec.version>
+        <junit-jupiter-api.version>5.3.1</junit-jupiter-api.version>
     </properties>
 
 </project>

algorithms-sorting/src/main/java/com/baeldung/algorithms/stringsort/AnagramValidator.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.sorting;
+package com.baeldung.algorithms.stringsort;
 
 import java.util.Arrays;
 

algorithms-sorting/src/test/java/com/baeldung/algorithms/stringsort/AnagramValidatorUnitTest.java

@@ -1,12 +1,10 @@
-package com.baeldung.string.sorting;
+package com.baeldung.algorithms.stringsort;
 
 
-import static org.junit.jupiter.api.Assertions.assertTrue;
-import static org.junit.jupiter.api.Assertions.assertFalse;
-
 import org.junit.jupiter.api.Test;
 
-import com.baeldung.string.sorting.AnagramValidator;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 class AnagramValidatorUnitTest {
     

algorithms-sorting/src/test/java/com/baeldung/algorithms/stringsort/SortStringUnitTest.java

@@ -1,9 +1,9 @@
-package com.baeldung.string.sorting;
+package com.baeldung.algorithms.stringsort;
-
-import java.util.Arrays;
 
 import org.junit.jupiter.api.Test;
 
+import java.util.Arrays;
+
 import static org.assertj.core.api.Assertions.assertThat;
 
 class SortStringUnitTest {

apache-shiro/README.md

@@ -4,4 +4,6 @@ This module contains articles about Apache Shiro
 
 ### Relevant articles:
 
-- [Introduction to Apache Shiro](https://www.baeldung.com/apache-shiro)
+- [Introduction to Apache Shiro](https://www.baeldung.com/apache-shiro)
+- [Permissions-Based Access Control with Apache Shiro](https://www.baeldung.com/apache-shiro-access-control)
+

apache-spark/README.md

@@ -6,3 +6,5 @@ This module contains articles about Apache Spark
 
 - [Introduction to Apache Spark](https://www.baeldung.com/apache-spark)
 - [Building a Data Pipeline with Kafka, Spark Streaming and Cassandra](https://www.baeldung.com/kafka-spark-data-pipeline)
+- [Machine Learning with Spark MLlib](https://www.baeldung.com/spark-mlib-machine-learning)
+

blade/pom.xml

@@ -3,19 +3,14 @@
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
 
     <modelVersion>4.0.0</modelVersion>
-    <!-- WITH THIS mvn integration-test DOES WORK -->
-    <groupId>com.baeldung</groupId>
     <artifactId>blade</artifactId>
-    <version>1.0.0-SNAPSHOT</version>
     <name>blade</name>
 
-
+	<parent>
-    <!-- WITH THIS mvn integration-test DOESN'T WORK -->
+		<groupId>com.baeldung</groupId>
-    <!-- <parent> -->
+		<artifactId>parent-modules</artifactId>
-    <!-- <groupId>com.baeldung</groupId> -->
+		<version>1.0.0-SNAPSHOT</version>
-    <!-- <artifactId>parent-modules</artifactId> -->
+	</parent>
-    <!-- <version>1.0.0-SNAPSHOT</version> -->
-    <!-- </parent> -->
 
     <dependencies>
         <dependency>
@@ -45,12 +40,6 @@
         </dependency>
 
         <!-- TEST -->
-        <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
-            <version>${junit.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>org.assertj</groupId>
             <artifactId>assertj-core</artifactId>
@@ -79,20 +68,6 @@
     <build>
         <finalName>sample-blade-app</finalName>
         <plugins>
-
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-surefire-plugin</artifactId>
-                <version>${maven-surefire-plugin.version}</version>
-                <configuration>
-                    <forkCount>3</forkCount>
-                    <reuseForks>true</reuseForks>
-                    <excludes>
-                        <exclude>**/*LiveTest.java</exclude>
-                    </excludes>
-                </configuration>
-            </plugin>
-
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-failsafe-plugin</artifactId>
@@ -172,34 +147,19 @@
                     </execution>
                 </executions>
             </plugin>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-compiler-plugin</artifactId>
-                <version>${maven-compiler-plugin.version}</version>
-                <configuration>
-                    <source>${maven.compiler.source}</source>
-                    <target>${maven.compiler.target}</target>
-                    <encoding>UTF-8</encoding>
-                </configuration>
-            </plugin>
         </plugins>
     </build>
 	
     <properties>
-        <maven.compiler.source>1.8</maven.compiler.source>
-        <maven.compiler.target>1.8</maven.compiler.target>
 		<blade-mvc.version>2.0.14.RELEASE</blade-mvc.version>
 		<bootstrap.version>4.2.1</bootstrap.version>
 		<commons-lang3.version>3.8.1</commons-lang3.version>
 		<lombok.version>1.18.4</lombok.version>
-		<junit.version>4.12</junit.version>
 		<httpclient.version>4.5.6</httpclient.version>
 		<httpmime.version>4.5.6</httpmime.version>
 		<httpcore.version>4.4.10</httpcore.version>
 		<assertj-core.version>3.11.1</assertj-core.version>
 		<maven-failsafe-plugin.version>3.0.0-M3</maven-failsafe-plugin.version>
 		<process-exec-maven-plugin.version>0.7</process-exec-maven-plugin.version>
-		<maven-surefire-plugin.version>2.21.0</maven-surefire-plugin.version>
-		<maven-compiler-plugin.version>3.7.0</maven-compiler-plugin.version>
     </properties>
 </project>

bootique/pom.xml

@@ -42,12 +42,6 @@
             <artifactId>bootique-test</artifactId>
             <scope>test</scope>
         </dependency>
-        <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
-            <version>${junit.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <build>

cas/cas-server/pom.xml

@@ -198,7 +198,6 @@
 
         <wrapper-maven-plugin.version>0.0.4</wrapper-maven-plugin.version>
         <maven-war-plugin.version>2.6</maven-war-plugin.version>
-        <maven-compiler-plugin.version>3.3</maven-compiler-plugin.version>
         
         <echo-maven-plugin.version>0.3.0</echo-maven-plugin.version>
         <pgpverify-maven-plugin.version>1.1.0</pgpverify-maven-plugin.version>

cdi/pom.xml

@@ -36,12 +36,6 @@
             <version>${assertj-core.version}</version>
             <scope>test</scope>
         </dependency>
-        <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
-            <version>${junit.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-context</artifactId>

checker-plugin/pom.xml

@@ -1,7 +1,6 @@
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <groupId>com.baeldung</groupId>
     <artifactId>checker-plugin</artifactId>
     <version>1.0-SNAPSHOT</version>
     <name>checker-plugin</name>

cloud-foundry-uaa/cf-uaa-oauth2-client/pom.xml

@@ -4,7 +4,6 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.example</groupId>
     <artifactId>cf-uaa-oauth2-client</artifactId>
-    <version>0.0.1-SNAPSHOT</version>
     <name>uaa-client-webapp</name>
     <description>Demo project for Spring Boot</description>
 

cloud-foundry-uaa/cf-uaa-oauth2-resource-server/pom.xml

@@ -4,7 +4,6 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.baeldung.cfuaa</groupId>
     <artifactId>cf-uaa-oauth2-resource-server</artifactId>
-    <version>0.0.1-SNAPSHOT</version>
     <name>cf-uaa-oauth2-resource-server</name>
     <description>Demo project for Spring Boot</description>
 

code-generation/pom.xml

@@ -1,7 +1,6 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <groupId>com.baeldung</groupId>
     <artifactId>code-generation</artifactId>
     <version>1.0</version>
     <name>code-generation</name>

core-groovy-2/README.md

@@ -11,4 +11,5 @@ This module contains articles about core Groovy concepts
 - [Integrating Groovy into Java Applications](https://www.baeldung.com/groovy-java-applications)
 - [Concatenate Strings with Groovy](https://www.baeldung.com/groovy-concatenate-strings)
 - [Metaprogramming in Groovy](https://www.baeldung.com/groovy-metaprogramming)
-- [[<-- Prev]](/core-groovy)
+- [A Quick Guide to Working with Web Services in Groovy](https://www.baeldung.com/groovy-web-services)
+- [[<-- Prev]](/core-groovy)

core-groovy-2/pom.xml

@@ -181,10 +181,8 @@
         <hsqldb.version>2.4.0</hsqldb.version>
         <spock-core.version>1.1-groovy-2.4</spock-core.version>
         <groovy-wslite.version>1.1.3</groovy-wslite.version>        
-        <maven-compiler-plugin.version>3.8.1</maven-compiler-plugin.version>
         <logback.version>1.2.3</logback.version>
         <groovy.version>2.5.7</groovy.version>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
 </project>
 

core-groovy/pom.xml

@@ -109,9 +109,6 @@
 
     <properties>
         <junit.platform.version>1.0.0</junit.platform.version>
-<!--         <groovy.version>2.4.13</groovy.version> -->
-<!--         <groovy-all.version>2.4.13</groovy-all.version> -->
-<!--         <groovy-sql.version>2.4.13</groovy-sql.version> -->
         <groovy.version>2.5.6</groovy.version>
         <groovy-all.version>2.5.6</groovy-all.version>
         <groovy-sql.version>2.5.6</groovy-sql.version>

core-java-modules/core-java-8-2/pom.xml

@@ -3,7 +3,6 @@
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <groupId>com.baeldung</groupId>
     <artifactId>core-java-8-2</artifactId>
     <version>0.1.0-SNAPSHOT</version>
     <name>core-java-8-2</name>
@@ -30,24 +29,7 @@
         </dependency>
     </dependencies>
 
-    <build>
-        <plugins>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-compiler-plugin</artifactId>
-                <version>${maven-compiler-plugin.version}</version>
-                <configuration>
-                    <source>${maven.compiler.source}</source>
-                    <target>${maven.compiler.target}</target>
-                </configuration>
-            </plugin>
-        </plugins>
-    </build>
-
     <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <maven.compiler.source>1.8</maven.compiler.source>
-        <maven.compiler.target>1.8</maven.compiler.target>
         <icu.version>64.2</icu.version>
         <assertj.version>3.12.2</assertj.version>
     </properties>

core-java-modules/core-java-8/pom.xml

@@ -1,7 +1,6 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <groupId>com.baeldung</groupId>
     <artifactId>core-java-8</artifactId>
     <version>0.1.0-SNAPSHOT</version>
     <name>core-java-8</name>
@@ -20,31 +19,11 @@
             <artifactId>commons-collections4</artifactId>
             <version>${commons-collections4.version}</version>
         </dependency>
-        <dependency>
-            <groupId>commons-io</groupId>
-            <artifactId>commons-io</artifactId>
-            <version>${commons-io.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-lang3</artifactId>
-            <version>${commons-lang3.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-math3</artifactId>
-            <version>${commons-math3.version}</version>
-        </dependency>
         <dependency>
             <groupId>log4j</groupId>
             <artifactId>log4j</artifactId>
             <version>${log4j.version}</version>
         </dependency>
-        <dependency>
-            <groupId>commons-codec</groupId>
-            <artifactId>commons-codec</artifactId>
-            <version>${commons-codec.version}</version>
-        </dependency>
         <dependency>
             <groupId>org.projectlombok</groupId>
             <artifactId>lombok</artifactId>
@@ -58,64 +37,6 @@
             <version>${assertj.version}</version>
             <scope>test</scope>
         </dependency>
-        <dependency>
-            <groupId>com.jayway.awaitility</groupId>
-            <artifactId>awaitility</artifactId>
-            <version>${avaitility.version}</version>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.openjdk.jmh</groupId>
-            <artifactId>jmh-core</artifactId>
-            <version>${jmh-core.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.openjdk.jmh</groupId>
-            <artifactId>jmh-generator-annprocess</artifactId>
-            <version>${jmh-generator.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.openjdk.jmh</groupId>
-            <artifactId>jmh-generator-bytecode</artifactId>
-            <version>${jmh-generator.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>com.codepoetics</groupId>
-            <artifactId>protonpack</artifactId>
-            <version>${protonpack.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>io.vavr</groupId>
-            <artifactId>vavr</artifactId>
-            <version>${vavr.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>joda-time</groupId>
-            <artifactId>joda-time</artifactId>
-            <version>${joda.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.aspectj</groupId>
-            <artifactId>aspectjrt</artifactId>
-            <version>${asspectj.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.aspectj</groupId>
-            <artifactId>aspectjweaver</artifactId>
-            <version>${asspectj.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.powermock</groupId>
-            <artifactId>powermock-module-junit4</artifactId>
-            <version>${powermock.version}</version>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.powermock</groupId>
-            <artifactId>powermock-api-mockito2</artifactId>
-            <version>${powermock.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <build>
@@ -149,22 +70,10 @@
 
     <properties>
         <!-- util -->
-        <commons-math3.version>3.6.1</commons-math3.version>
         <commons-collections4.version>4.1</commons-collections4.version>
-        <collections-generic.version>4.01</collections-generic.version>
-        <commons-codec.version>1.10</commons-codec.version>
-        <vavr.version>0.9.0</vavr.version>
-        <protonpack.version>1.13</protonpack.version>
-        <joda.version>2.10</joda.version>
         <!-- testing -->
         <assertj.version>3.6.1</assertj.version>
-        <asspectj.version>1.8.9</asspectj.version>
-        <powermock.version>2.0.0-RC.4</powermock.version>
-        <avaitility.version>1.7.0</avaitility.version>
-        <jmh-core.version>1.19</jmh-core.version>
-        <jmh-generator.version>1.19</jmh-generator.version>
-        <spring-boot-maven-plugin.version>2.0.4.RELEASE</spring-boot-maven-plugin.version>
         <!-- plugins -->
-        <maven-surefire-plugin.version>2.22.1</maven-surefire-plugin.version>
+        <spring-boot-maven-plugin.version>2.0.4.RELEASE</spring-boot-maven-plugin.version>
     </properties>
 </project>

core-java-modules/core-java-annotations/pom.xml

@@ -1,7 +1,6 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <groupId>com.baeldung</groupId>
     <artifactId>core-java-annotations</artifactId>
     <version>0.1.0-SNAPSHOT</version>
     <name>core-java-annotations</name>
@@ -14,42 +13,6 @@
         <relativePath>../../parent-java</relativePath>
     </parent>
 
-    <dependencies>
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-lang3</artifactId>
-            <version>${commons-lang3.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.projectlombok</groupId>
-            <artifactId>lombok</artifactId>
-            <version>${lombok.version}</version>
-            <scope>provided</scope>
-        </dependency>
-        <!-- test scoped -->
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.openjdk.jmh</groupId>
-            <artifactId>jmh-core</artifactId>
-            <version>${jmh-core.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.openjdk.jmh</groupId>
-            <artifactId>jmh-generator-annprocess</artifactId>
-            <version>${jmh-generator.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.openjdk.jmh</groupId>
-            <artifactId>jmh-generator-bytecode</artifactId>
-            <version>${jmh-generator.version}</version>
-        </dependency>
-    </dependencies>
-
     <build>
         <finalName>core-java-annotations</finalName>
         <resources>
@@ -60,13 +23,4 @@
         </resources>
     </build>
 
-    <properties>
-        <!-- testing -->
-        <assertj.version>3.6.1</assertj.version>
-        <asspectj.version>1.8.9</asspectj.version>
-        <jmh-core.version>1.19</jmh-core.version>
-        <jmh-generator.version>1.19</jmh-generator.version>
-        <!-- plugins -->
-        <maven-surefire-plugin.version>2.22.1</maven-surefire-plugin.version>
-    </properties>
 </project>

core-java-modules/core-java-arrays-2/pom.xml

@@ -1,7 +1,6 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <groupId>com.baeldung</groupId>
     <artifactId>core-java-arrays-2</artifactId>
     <version>0.1.0-SNAPSHOT</version>
     <name>core-java-arrays-2</name>

core-java-modules/core-java-arrays/pom.xml

@@ -1,7 +1,6 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <groupId>com.baeldung</groupId>
     <artifactId>core-java-arrays</artifactId>
     <version>0.1.0-SNAPSHOT</version>
     <name>core-java-arrays</name>
@@ -20,16 +19,6 @@
             <artifactId>commons-lang3</artifactId>
             <version>${commons-lang3.version}</version>
         </dependency>
-        <dependency>
-            <groupId>log4j</groupId>
-            <artifactId>log4j</artifactId>
-            <version>${log4j.version}</version>
-        </dependency>
-        <dependency> <!-- needed to bridge to slf4j for projects that use the log4j APIs directly -->
-            <groupId>org.slf4j</groupId>
-            <artifactId>log4j-over-slf4j</artifactId>
-            <version>${org.slf4j.version}</version>
-        </dependency>
         <!-- test scoped -->
         <dependency>
             <groupId>org.assertj</groupId>
@@ -47,11 +36,6 @@
             <artifactId>jmh-generator-annprocess</artifactId>
             <version>${jmh-generator-annprocess.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.springframework</groupId>
-            <artifactId>spring-web</artifactId>
-            <version>${springframework.spring-web.version}</version>
-        </dependency>
     </dependencies>
 
     <build>
@@ -64,21 +48,6 @@
         </resources>
 
         <plugins>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-surefire-plugin</artifactId>
-                <configuration>
-                    <excludes>
-                        <exclude>**/*LiveTest.java</exclude>
-                        <exclude>**/*IntegrationTest.java</exclude>
-                        <exclude>**/*IntTest.java</exclude>
-                        <exclude>**/*LongRunningUnitTest.java</exclude>
-                        <exclude>**/*ManualTest.java</exclude>
-                    </excludes>
-                    <testFailureIgnore>true</testFailureIgnore>
-                </configuration>
-            </plugin>
-
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-dependency-plugin</artifactId>
@@ -398,8 +367,6 @@
         <assertj-core.version>3.10.0</assertj-core.version>
 
         <!-- maven and spring plugins -->
-        <maven-surefire-plugin.version>2.21.0</maven-surefire-plugin.version>
-        <springframework.spring-web.version>4.3.4.RELEASE</springframework.spring-web.version>
         <maven-javadoc-plugin.version>3.0.0-M1</maven-javadoc-plugin.version>
         <maven-jar-plugin.version>3.0.2</maven-jar-plugin.version>
         <onejar-maven-plugin.version>1.4.4</onejar-maven-plugin.version>

core-java-modules/core-java-collections-2/pom.xml

@@ -2,7 +2,6 @@
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <artifactId>core-java-collections-2</artifactId>
-    <version>0.0.1-SNAPSHOT</version>
     <name>core-java-collections-2</name>
     <packaging>jar</packaging>
 

core-java-modules/core-java-collections-array-list/README.md

@@ -7,4 +7,6 @@ This module contains articles about the Java ArrayList collection
 - [Guide to the Java ArrayList](http://www.baeldung.com/java-arraylist)
 - [Add Multiple Items to an Java ArrayList](http://www.baeldung.com/java-add-items-array-list)
 - [ClassCastException: Arrays$ArrayList cannot be cast to ArrayList](https://www.baeldung.com/java-classcastexception-arrays-arraylist)
-- [Multi Dimensional ArrayList in Java](https://www.baeldung.com/java-multi-dimensional-arraylist)
+- [Multi Dimensional ArrayList in Java](https://www.baeldung.com/java-multi-dimensional-arraylist)
+- [Removing an Element From an ArrayList](https://www.baeldung.com/java-arraylist-remove-element)
+

core-java-modules/core-java-collections-array-list/pom.xml

@@ -19,28 +19,16 @@
             <artifactId>commons-collections4</artifactId>
             <version>${commons-collections4.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-lang3</artifactId>
-            <version>${commons-lang3.version}</version>
-        </dependency>
         <dependency>
             <groupId>org.assertj</groupId>
             <artifactId>assertj-core</artifactId>
             <version>${assertj.version}</version>
             <scope>test</scope>
         </dependency>
-        <dependency>
-            <groupId>org.projectlombok</groupId>
-            <artifactId>lombok</artifactId>
-            <version>${lombok.version}</version>
-            <scope>provided</scope>
-        </dependency>
     </dependencies>
 
     <properties>
         <commons-collections4.version>4.1</commons-collections4.version>
-        <commons-lang3.version>3.8.1</commons-lang3.version>
         <assertj.version>3.11.1</assertj.version>
     </properties>
 </project>

core-java-modules/core-java-collections-list-2/pom.xml

@@ -19,11 +19,6 @@
             <artifactId>commons-collections4</artifactId>
             <version>${commons-collections4.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-lang3</artifactId>
-            <version>${commons-lang3.version}</version>
-        </dependency>
         <dependency>
             <groupId>org.assertj</groupId>
             <artifactId>assertj-core</artifactId>
@@ -39,8 +34,7 @@
     </dependencies>
 
     <properties>
-        <commons-collections4.version>4.1</commons-collections4.version>
+        <commons-collections4.version>4.1</commons-collections4.version>    
-        <commons-lang3.version>3.8.1</commons-lang3.version>
         <assertj.version>3.11.1</assertj.version>
     </properties>
 </project>

core-java-modules/core-java-collections-list-3/pom.xml

@@ -19,23 +19,12 @@
             <artifactId>commons-collections4</artifactId>
             <version>${commons-collections4.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-lang3</artifactId>
-            <version>${commons-lang3.version}</version>
-        </dependency>
         <dependency>
             <groupId>org.assertj</groupId>
             <artifactId>assertj-core</artifactId>
             <version>${assertj.version}</version>
             <scope>test</scope>
         </dependency>
-        <dependency>
-            <groupId>org.projectlombok</groupId>
-            <artifactId>lombok</artifactId>
-            <version>${lombok.version}</version>
-            <scope>provided</scope>
-        </dependency>
 
         <dependency>
             <groupId>net.sf.trove4j</groupId>
@@ -67,7 +56,6 @@
 
     <properties>
         <commons-collections4.version>4.1</commons-collections4.version>
-        <commons-lang3.version>3.8.1</commons-lang3.version>
         <assertj.version>3.11.1</assertj.version>
 		<trove4j.version>3.0.2</trove4j.version>
 		<fastutil.version>8.1.0</fastutil.version>

core-java-modules/core-java-collections-list/pom.xml

@@ -30,18 +30,11 @@
             <version>${assertj.version}</version>
             <scope>test</scope>
         </dependency>
-        <dependency>
-            <groupId>org.projectlombok</groupId>
-            <artifactId>lombok</artifactId>
-            <version>${lombok.version}</version>
-            <scope>provided</scope>
-        </dependency>
     </dependencies>
 
     <properties>
         <commons-collections4.version>4.1</commons-collections4.version>
         <commons-lang3.version>3.8.1</commons-lang3.version>
         <assertj.version>3.11.1</assertj.version>
-		<trove4j.version>3.0.2</trove4j.version>
     </properties>
 </project>

core-java-modules/core-java-collections-set/pom.xml

@@ -14,11 +14,6 @@
     </parent>
 
     <dependencies>
-        <dependency>
-            <groupId>com.google.guava</groupId>
-            <artifactId>guava</artifactId>
-            <version>${guava.version}</version>
-        </dependency>
         <dependency>
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-collections4</artifactId>
@@ -38,7 +33,6 @@
 
     <properties>
         <commons-collections4.version>4.3</commons-collections4.version>
-        <guava.version>27.1-jre</guava.version>
         <gson.version>2.8.5</gson.version>
     </properties>
 </project>

core-java-modules/core-java-collections/pom.xml

@@ -30,12 +30,6 @@
             <artifactId>jmh-generator-annprocess</artifactId>
             <version>${openjdk.jmh.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.projectlombok</groupId>
-            <artifactId>lombok</artifactId>
-            <version>${lombok.version}</version>
-            <scope>provided</scope>
-        </dependency>
     </dependencies>
 
     <properties>

core-java-modules/core-java-concurrency-basic-2/pom.xml

@@ -1,7 +1,6 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <groupId>com.baeldung</groupId>
     <artifactId>core-java-concurrency-basic-2</artifactId>
     <version>0.1.0-SNAPSHOT</version>
     <name>core-java-concurrency-basic-2</name>
@@ -27,7 +26,4 @@
         </resources>
     </build>
 
-    <properties>
-    </properties>
-
 </project>

core-java-modules/core-java-concurrency-basic/pom.xml

@@ -1,7 +1,6 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <groupId>com.baeldung</groupId>
     <artifactId>core-java-concurrency-basic</artifactId>
     <version>0.1.0-SNAPSHOT</version>
     <name>core-java-concurrency-basic</name>

core-java-modules/core-java-concurrency-collections/pom.xml

@@ -1,7 +1,6 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <groupId>com.baeldung</groupId>
     <artifactId>core-java-concurrency-collections</artifactId>
     <version>0.1.0-SNAPSHOT</version>
     <name>core-java-concurrency-collections</name>
@@ -15,38 +14,12 @@
     </parent>
 
     <dependencies>
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-collections4</artifactId>
-            <version>${commons-collections4.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>commons-io</groupId>
-            <artifactId>commons-io</artifactId>
-            <version>${commons-io.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-lang3</artifactId>
-            <version>${commons-lang3.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-math3</artifactId>
-            <version>${commons-math3.version}</version>
-        </dependency>
         <dependency>
             <groupId>org.assertj</groupId>
             <artifactId>assertj-core</artifactId>
             <version>${assertj.version}</version>
             <scope>test</scope>
         </dependency>
-        <dependency>
-            <groupId>com.jayway.awaitility</groupId>
-            <artifactId>awaitility</artifactId>
-            <version>${avaitility.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <build>
@@ -60,14 +33,8 @@
     </build>
 
     <properties>
-        <!-- util -->
-        <guava.version>21.0</guava.version>
-        <commons-math3.version>3.6.1</commons-math3.version>
-        <commons-collections4.version>4.1</commons-collections4.version>
-        <collections-generic.version>4.01</collections-generic.version>
         <!-- testing -->
         <assertj.version>3.6.1</assertj.version>
-        <avaitility.version>1.7.0</avaitility.version>
     </properties>
 
 </project>

core-java-modules/core-java-exceptions/README.md

@@ -11,3 +11,5 @@ This module contains articles about core java exceptions
 - [Difference Between Throw and Throws in Java](https://www.baeldung.com/java-throw-throws)
 - [“Sneaky Throws” in Java](https://www.baeldung.com/java-sneaky-throws)
 - [The StackOverflowError in Java](https://www.baeldung.com/java-stack-overflow-error)
+- [Checked and Unchecked Exceptions in Java](https://www.baeldung.com/java-checked-unchecked-exceptions)
+

core-java-modules/core-java-function/pom.xml

@@ -1,7 +1,6 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <groupId>com.baeldung</groupId>
     <artifactId>core-java-function</artifactId>
     <version>0.1.0-SNAPSHOT</version>
     <name>core-java-function</name>
@@ -15,11 +14,6 @@
     </parent>
 
     <dependencies>
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-lang3</artifactId>
-            <version>${commons-lang3.version}</version>
-        </dependency>
         <!-- test scoped -->
         <dependency>
             <groupId>org.assertj</groupId>
@@ -42,8 +36,5 @@
     <properties>
         <!-- testing -->
         <assertj.version>3.6.1</assertj.version>
-        <asspectj.version>1.8.9</asspectj.version>
-        <!-- plugins -->
-        <maven-surefire-plugin.version>2.22.1</maven-surefire-plugin.version>
     </properties>
 </project>

core-java-modules/core-java-io-2/README.md

@@ -0,0 +1,6 @@
+
+### Relevant Articles:
+
+- [Create a File in a Specific Directory in Java](https://www.baeldung.com/java-create-file-in-directory)
+- [A Guide to the Java FileReader Class](https://www.baeldung.com/java-filereader)
+

core-java-modules/core-java-io-files/pom.xml

@@ -14,76 +14,6 @@
     </parent>
 
     <dependencies>
-        <!-- utils -->
-        <dependency>
-            <groupId>net.sourceforge.collections</groupId>
-            <artifactId>collections-generic</artifactId>
-            <version>${collections-generic.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-collections4</artifactId>
-            <version>${commons-collections4.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>commons-io</groupId>
-            <artifactId>commons-io</artifactId>
-            <version>${commons-io.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-lang3</artifactId>
-            <version>${commons-lang3.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-math3</artifactId>
-            <version>${commons-math3.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.decimal4j</groupId>
-            <artifactId>decimal4j</artifactId>
-            <version>${decimal4j.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.bouncycastle</groupId>
-            <artifactId>bcprov-jdk15on</artifactId>
-            <version>${bouncycastle.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.unix4j</groupId>
-            <artifactId>unix4j-command</artifactId>
-            <version>${unix4j.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>com.googlecode.grep4j</groupId>
-            <artifactId>grep4j</artifactId>
-            <version>${grep4j.version}</version>
-        </dependency>
-        <!-- web -->
-        <!-- marshalling -->
-        <dependency>
-            <groupId>com.fasterxml.jackson.core</groupId>
-            <artifactId>jackson-databind</artifactId>
-            <version>${jackson.version}</version>
-        </dependency>
-        <!-- logging -->
-        <dependency>
-            <groupId>log4j</groupId>
-            <artifactId>log4j</artifactId>
-            <version>${log4j.version}</version>
-        </dependency>
-        <dependency> <!-- needed to bridge to slf4j for projects that use the log4j APIs directly -->
-            <groupId>org.slf4j</groupId>
-            <artifactId>log4j-over-slf4j</artifactId>
-            <version>${org.slf4j.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.projectlombok</groupId>
-            <artifactId>lombok</artifactId>
-            <version>${lombok.version}</version>
-            <scope>provided</scope>
-        </dependency>
         <!-- test scoped -->
         <dependency>
             <groupId>org.assertj</groupId>
@@ -91,86 +21,12 @@
             <version>${assertj.version}</version>
             <scope>test</scope>
         </dependency>
-        <dependency>
-            <groupId>com.jayway.awaitility</groupId>
-            <artifactId>awaitility</artifactId>
-            <version>${avaitility.version}</version>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>commons-codec</groupId>
-            <artifactId>commons-codec</artifactId>
-            <version>${commons-codec.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.javamoney</groupId>
-            <artifactId>moneta</artifactId>
-            <version>${moneta.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.owasp.esapi</groupId>
-            <artifactId>esapi</artifactId>
-            <version>${esapi.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>com.sun.messaging.mq</groupId>
-            <artifactId>fscontext</artifactId>
-            <version>${fscontext.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>com.codepoetics</groupId>
-            <artifactId>protonpack</artifactId>
-            <version>${protonpack.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>one.util</groupId>
-            <artifactId>streamex</artifactId>
-            <version>${streamex.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>io.vavr</groupId>
-            <artifactId>vavr</artifactId>
-            <version>${vavr.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.openjdk.jmh</groupId>
-            <artifactId>jmh-core</artifactId>
-            <version>${jmh-core.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.openjdk.jmh</groupId>
-            <artifactId>jmh-generator-annprocess</artifactId>
-            <version>${jmh-generator-annprocess.version}</version>
-        </dependency>
         <dependency>
             <groupId>org.hsqldb</groupId>
             <artifactId>hsqldb</artifactId>
             <version>${hsqldb.version}</version>
             <scope>runtime</scope>
         </dependency>
-        <!-- https://mvnrepository.com/artifact/org.asynchttpclient/async-http-client -->
-        <dependency>
-            <groupId>org.asynchttpclient</groupId>
-            <artifactId>async-http-client</artifactId>
-            <version>${async-http-client.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>com.opencsv</groupId>
-            <artifactId>opencsv</artifactId>
-            <version>${opencsv.version}</version>
-            <scope>test</scope>
-        </dependency>
-        <!-- Mime Type Resolution Libraries -->
-        <dependency>
-            <groupId>org.apache.tika</groupId>
-            <artifactId>tika-core</artifactId>
-            <version>${tika.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>net.sf.jmimemagic</groupId>
-            <artifactId>jmimemagic</artifactId>
-            <version>${jmime-magic.version}</version>
-        </dependency>
     </dependencies>
 
     <build>
@@ -262,33 +118,13 @@
 
     <properties>
 
-        <!-- util -->
-        <bouncycastle.version>1.55</bouncycastle.version>
-        <commons-codec.version>1.10</commons-codec.version>
-        <commons-math3.version>3.6.1</commons-math3.version>
-        <decimal4j.version>1.0.3</decimal4j.version>
-        <commons-collections4.version>4.1</commons-collections4.version>
-        <collections-generic.version>4.01</collections-generic.version>
-        <unix4j.version>0.4</unix4j.version>
-        <grep4j.version>1.8.7</grep4j.version>
-        <fscontext.version>4.6-b01</fscontext.version>
-        <protonpack.version>1.13</protonpack.version>
-        <streamex.version>0.6.5</streamex.version>
-        <vavr.version>0.9.0</vavr.version>
-        <opencsv.version>4.1</opencsv.version>
         <!-- testing -->
         <assertj.version>3.6.1</assertj.version>
-        <avaitility.version>1.7.0</avaitility.version>
 
         <!-- maven plugins -->
         <maven-javadoc-plugin.version>3.0.0-M1</maven-javadoc-plugin.version>
         <hsqldb.version>2.4.0</hsqldb.version>
-        <esapi.version>2.1.0.1</esapi.version>
-        <jmh-generator-annprocess.version>1.19</jmh-generator-annprocess.version>
-        <async-http-client.version>2.4.5</async-http-client.version>
         <!-- Mime Type Libraries -->
-        <tika.version>1.18</tika.version>
-        <jmime-magic.version>0.1.5</jmime-magic.version>
         <maven-jar-plugin.version>3.1.0</maven-jar-plugin.version>
 
     </properties>

core-java-modules/core-java-io/README.md

@@ -41,4 +41,5 @@ This module contains articles about core Java input and output (IO)
 - [List Files in a Directory in Java](https://www.baeldung.com/java-list-directory-files)
 - [Java InputStream to Byte Array and ByteBuffer](https://www.baeldung.com/convert-input-stream-to-array-of-bytes)
 - [Introduction to the Java NIO Selector](https://www.baeldung.com/java-nio-selector)
+- [How to Avoid the Java FileNotFoundException When Loading Resources](https://www.baeldung.com/java-classpath-resource-cannot-be-opened)
 - [[More -->]](/core-java-modules/core-java-io-2)

core-java-modules/core-java-io/pom.xml

@@ -14,76 +14,6 @@
     </parent>
 
     <dependencies>
-        <!-- utils -->
-        <dependency>
-            <groupId>net.sourceforge.collections</groupId>
-            <artifactId>collections-generic</artifactId>
-            <version>${collections-generic.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-collections4</artifactId>
-            <version>${commons-collections4.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>commons-io</groupId>
-            <artifactId>commons-io</artifactId>
-            <version>${commons-io.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-lang3</artifactId>
-            <version>${commons-lang3.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-math3</artifactId>
-            <version>${commons-math3.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.decimal4j</groupId>
-            <artifactId>decimal4j</artifactId>
-            <version>${decimal4j.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.bouncycastle</groupId>
-            <artifactId>bcprov-jdk15on</artifactId>
-            <version>${bouncycastle.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.unix4j</groupId>
-            <artifactId>unix4j-command</artifactId>
-            <version>${unix4j.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>com.googlecode.grep4j</groupId>
-            <artifactId>grep4j</artifactId>
-            <version>${grep4j.version}</version>
-        </dependency>
-        <!-- web -->
-        <!-- marshalling -->
-        <dependency>
-            <groupId>com.fasterxml.jackson.core</groupId>
-            <artifactId>jackson-databind</artifactId>
-            <version>${jackson.version}</version>
-        </dependency>
-        <!-- logging -->
-        <dependency>
-            <groupId>log4j</groupId>
-            <artifactId>log4j</artifactId>
-            <version>${log4j.version}</version>
-        </dependency>
-        <dependency> <!-- needed to bridge to slf4j for projects that use the log4j APIs directly -->
-            <groupId>org.slf4j</groupId>
-            <artifactId>log4j-over-slf4j</artifactId>
-            <version>${org.slf4j.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.projectlombok</groupId>
-            <artifactId>lombok</artifactId>
-            <version>${lombok.version}</version>
-            <scope>provided</scope>
-        </dependency>
         <!-- test scoped -->
         <dependency>
             <groupId>org.assertj</groupId>
@@ -91,57 +21,6 @@
             <version>${assertj.version}</version>
             <scope>test</scope>
         </dependency>
-        <dependency>
-            <groupId>com.jayway.awaitility</groupId>
-            <artifactId>awaitility</artifactId>
-            <version>${avaitility.version}</version>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>commons-codec</groupId>
-            <artifactId>commons-codec</artifactId>
-            <version>${commons-codec.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.javamoney</groupId>
-            <artifactId>moneta</artifactId>
-            <version>${moneta.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.owasp.esapi</groupId>
-            <artifactId>esapi</artifactId>
-            <version>${esapi.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>com.sun.messaging.mq</groupId>
-            <artifactId>fscontext</artifactId>
-            <version>${fscontext.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>com.codepoetics</groupId>
-            <artifactId>protonpack</artifactId>
-            <version>${protonpack.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>one.util</groupId>
-            <artifactId>streamex</artifactId>
-            <version>${streamex.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>io.vavr</groupId>
-            <artifactId>vavr</artifactId>
-            <version>${vavr.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.openjdk.jmh</groupId>
-            <artifactId>jmh-core</artifactId>
-            <version>${jmh-core.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.openjdk.jmh</groupId>
-            <artifactId>jmh-generator-annprocess</artifactId>
-            <version>${jmh-generator-annprocess.version}</version>
-        </dependency>
         <dependency>
             <groupId>org.hsqldb</groupId>
             <artifactId>hsqldb</artifactId>
@@ -263,28 +142,13 @@
     <properties>
 
         <!-- util -->
-        <bouncycastle.version>1.55</bouncycastle.version>
-        <commons-codec.version>1.10</commons-codec.version>
-        <commons-math3.version>3.6.1</commons-math3.version>
-        <decimal4j.version>1.0.3</decimal4j.version>
-        <commons-collections4.version>4.1</commons-collections4.version>
-        <collections-generic.version>4.01</collections-generic.version>
-        <unix4j.version>0.4</unix4j.version>
-        <grep4j.version>1.8.7</grep4j.version>
-        <fscontext.version>4.6-b01</fscontext.version>
-        <protonpack.version>1.13</protonpack.version>
-        <streamex.version>0.6.5</streamex.version>
-        <vavr.version>0.9.0</vavr.version>
         <opencsv.version>4.1</opencsv.version>
         <!-- testing -->
         <assertj.version>3.6.1</assertj.version>
-        <avaitility.version>1.7.0</avaitility.version>
 
         <!-- maven plugins -->
         <maven-javadoc-plugin.version>3.0.0-M1</maven-javadoc-plugin.version>
         <hsqldb.version>2.4.0</hsqldb.version>
-        <esapi.version>2.1.0.1</esapi.version>
-        <jmh-generator-annprocess.version>1.19</jmh-generator-annprocess.version>
         <async-http-client.version>2.4.5</async-http-client.version>
         <!-- Mime Type Libraries -->
         <tika.version>1.18</tika.version>

core-java-modules/core-java-jndi/README.md

@@ -0,0 +1,4 @@
+
+### Relevant Articles:
+
+- [Java Naming and Directory Interface Overview](https://www.baeldung.com/jndi)

core-java-modules/core-java-jpms/decoupling-pattern2/consumermodule/pom.xml

@@ -3,7 +3,6 @@
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-
     <groupId>com.baeldung.consumermodule</groupId>
     <artifactId>consumermodule</artifactId>
     <version>1.0</version>

core-java-modules/core-java-jpms/decoupling-pattern2/servicemodule/pom.xml

@@ -3,16 +3,16 @@
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
+    <groupId>com.baeldung.servicemodule</groupId>
+    <artifactId>servicemodule</artifactId>
+    <version>1.0</version>
+
     <parent>
         <artifactId>>com.baeldung.decoupling-pattern2</artifactId>
         <groupId>decoupling-pattern2</groupId>
         <version>1.0-SNAPSHOT</version>
     </parent>
 
-    <groupId>com.baeldung.servicemodule</groupId>
-    <artifactId>servicemodule</artifactId>
-    <version>1.0</version>
-
     <build>
         <plugins>
             <plugin>

core-java-modules/core-java-jvm/README.md

@@ -4,3 +4,5 @@
 
 ### Relevant Articles: 
 - [Method Inlining in the JVM](https://www.baeldung.com/jvm-method-inlining)
+- [A Guide to System.exit()](https://www.baeldung.com/java-system-exit)
+- [Guide to System.gc()](https://www.baeldung.com/java-system-gc)

core-java-modules/core-java-jvm/pom.xml

@@ -1,7 +1,6 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <groupId>com.baeldung</groupId>
     <artifactId>core-java-jvm</artifactId>
     <version>0.1.0-SNAPSHOT</version>
     <packaging>jar</packaging>
@@ -14,27 +13,4 @@
         <relativePath>../../</relativePath>
     </parent>
 
-    <dependencies>
-        <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
-            <version>${junit.version}</version>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-lang3</artifactId>
-            <version>${commons-lang3.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
-    </dependencies>
-
-    <properties>
-        <assertj.version>3.6.1</assertj.version>
-    </properties>
 </project>

core-java-modules/core-java-lang-2/README.md

@@ -4,4 +4,5 @@ This module contains articles about core features in the Java language
 
 ### Relevant Articles: 
 - [Java Primitives versus Objects](https://www.baeldung.com/java-primitives-vs-objects)
-- [[<-- Prev]](/core-java-modules/core-java-lang)
+- [Command-Line Arguments in Java](https://www.baeldung.com/java-command-line-arguments)
+- [[<-- Prev]](/core-java-modules/core-java-lang)

core-java-modules/core-java-lang-2/pom.xml

@@ -1,7 +1,6 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <groupId>com.baeldung</groupId>
     <artifactId>core-java-lang-2</artifactId>
     <version>0.1.0-SNAPSHOT</version>
     <name>core-java-lang-2</name>

core-java-modules/core-java-lang-math/pom.xml

@@ -1,7 +1,6 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <groupId>com.baeldung</groupId>
     <artifactId>core-java-lang-math</artifactId>
     <version>0.1.0-SNAPSHOT</version>
     <name>core-java-lang-math</name>
@@ -15,11 +14,6 @@
     </parent>
 
     <dependencies>
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-lang3</artifactId>
-            <version>${commons-lang3.version}</version>
-        </dependency>
         <!-- test scoped -->
         <dependency>
             <groupId>org.assertj</groupId>
@@ -42,8 +36,5 @@
     <properties>
         <!-- testing -->
         <assertj.version>3.6.1</assertj.version>
-        <asspectj.version>1.8.9</asspectj.version>
-        <!-- plugins -->
-        <maven-surefire-plugin.version>2.22.1</maven-surefire-plugin.version>
     </properties>
 </project>

core-java-modules/core-java-lang-oop-2/README.md

@@ -14,4 +14,5 @@ This module contains articles about Object-oriented programming (OOP) in Java
 - [A Guide to Constructors in Java](https://www.baeldung.com/java-constructors)
 - [Composition, Aggregation, and Association in Java](https://www.baeldung.com/java-composition-aggregation-association)
 - [Static and Default Methods in Interfaces in Java](https://www.baeldung.com/java-static-default-methods)
-- [[<-- Prev]](/core-java-modules/core-java-lang-oop)[[More -->]](/core-java-modules/core-java-lang-oop-3)
+- [Java Copy Constructor](https://www.baeldung.com/java-copy-constructor)
+- [[<-- Prev]](/core-java-modules/core-java-lang-oop)[[More -->]](/core-java-modules/core-java-lang-oop-3)

core-java-modules/core-java-lang-oop-2/pom.xml

@@ -1,7 +1,6 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <groupId>com.baeldung</groupId>
     <artifactId>core-java-lang-oop-2</artifactId>
     <version>0.1.0-SNAPSHOT</version>
     <name>core-java-lang-oop-2</name>
@@ -29,13 +28,6 @@
             <scope>test</scope>
         </dependency>
 	</dependencies>
-
-    <properties>
-        <h2.version>1.4.199</h2.version>
-        <!-- testing -->
-        <assertj-core.version>3.10.0</assertj-core.version>
-        <equalsverifier.version>3.0.3</equalsverifier.version>
-    </properties>
     
     <build>
         <finalName>core-java-lang-oop-2</finalName>
@@ -47,4 +39,10 @@
         </resources>
     </build>
 
+    <properties>
+        <!-- testing -->
+        <assertj-core.version>3.10.0</assertj-core.version>
+        <equalsverifier.version>3.0.3</equalsverifier.version>
+    </properties>
+
 </project>

core-java-modules/core-java-lang-oop/pom.xml

@@ -1,7 +1,6 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <groupId>com.baeldung</groupId>
     <artifactId>core-java-lang-oop</artifactId>
     <version>0.1.0-SNAPSHOT</version>
     <name>core-java-lang-oop</name>
@@ -32,23 +31,6 @@
             <artifactId>gson</artifactId>
             <version>${gson.version}</version>
         </dependency>
-        <!-- logging -->
-        <dependency>
-            <groupId>log4j</groupId>
-            <artifactId>log4j</artifactId>
-            <version>${log4j.version}</version>
-        </dependency>
-        <dependency> <!-- needed to bridge to slf4j for projects that use the log4j APIs directly -->
-            <groupId>org.slf4j</groupId>
-            <artifactId>log4j-over-slf4j</artifactId>
-            <version>${org.slf4j.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.projectlombok</groupId>
-            <artifactId>lombok</artifactId>
-            <version>${lombok.version}</version>
-            <scope>provided</scope>
-        </dependency>
         <!-- test scoped -->
         <dependency>
             <groupId>org.assertj</groupId>

core-java-modules/core-java-lang-oop/src/test/java/com/baeldung/deepcopy/DeepCopyUnitTest.java

@@ -25,7 +25,7 @@ public class DeepCopyUnitTest {
     }
 
     @Test
-    public void whenModifyingOriginalObject_thenConstructorCopyShouldNotChange() {
+    public void whenModifyingOriginalObject_thenCopyShouldNotChange() {
         Address address = new Address("Downing St 10", "London", "England");
         User pm = new User("Prime", "Minister", address);
         User deepCopy = new User(pm);
@@ -125,4 +125,13 @@ public class DeepCopyUnitTest {
         end = System.currentTimeMillis();
         System.out.println("Cloning with Jackson took " + (end - start) + " milliseconds.");
     }
+    
+    @Test
+    public void whenModifyingOriginalObject_ThenCopyShouldChange() {
+        Address address = new Address("Downing St 10", "London", "England");
+        User pm = new User("Prime", "Minister", address);
+        User shallowCopy = new User(pm.getFirstName(), pm.getLastName(), pm.getAddress());
+        address.setCountry("Great Britain");
+        assertThat(shallowCopy.getAddress().getCountry()).isEqualTo(pm.getAddress().getCountry());
+    }
 }

core-java-modules/core-java-lang-operators/README.md

@@ -5,3 +5,5 @@
 - [Java instanceof Operator](https://www.baeldung.com/java-instanceof)
 - [A Guide to Increment and Decrement Unary Operators in Java](https://www.baeldung.com/java-unary-operators)
 - [Java Compound Operators](https://www.baeldung.com/java-compound-operators)
+- [The XOR Operator in Java](https://www.baeldung.com/java-xor-operator)
+

core-java-modules/core-java-lang-operators/pom.xml

@@ -2,7 +2,6 @@
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <groupId>com.baeldung</groupId>
     <artifactId>core-java-lang-operators</artifactId>
     <version>0.1.0-SNAPSHOT</version>
     <name>core-java-lang-operators</name>

core-java-modules/core-java-lang-syntax-2/pom.xml

@@ -1,7 +1,6 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <groupId>com.baeldung</groupId>
     <artifactId>core-java-lang-syntax-2</artifactId>
     <version>0.1.0-SNAPSHOT</version>
     <name>core-java-lang-syntax-2</name>

core-java-modules/core-java-lang-syntax/pom.xml

@@ -1,7 +1,6 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <groupId>com.baeldung</groupId>
     <artifactId>core-java-lang-syntax</artifactId>
     <version>0.1.0-SNAPSHOT</version>
     <name>core-java-lang-syntax</name>

core-java-modules/core-java-lang-syntax/src/main/java/com/baeldung/generics/Generics.java

@@ -35,4 +35,11 @@ public class Generics {
         return list;
     }
 
+    public <T> List<T> genericMethod(List<T> list) {
+        return list.stream().collect(Collectors.toList());
+    }
+    
+    public List<Object> withErasure(List<Object> list) {
+        return list.stream().collect(Collectors.toList());
+    }
 }

core-java-modules/core-java-lang/pom.xml

@@ -1,7 +1,6 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <groupId>com.baeldung</groupId>
     <artifactId>core-java-lang</artifactId>
     <version>0.1.0-SNAPSHOT</version>
     <name>core-java-lang</name>
@@ -14,44 +13,6 @@
         <relativePath>../../parent-java</relativePath>
     </parent>
 
-    <dependencies>
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-lang3</artifactId>
-            <version>${commons-lang3.version}</version>
-        </dependency>
-        <!-- web -->
-        <!-- marshalling -->
-        <dependency>
-            <groupId>com.fasterxml.jackson.core</groupId>
-            <artifactId>jackson-databind</artifactId>
-            <version>${jackson.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>com.google.code.gson</groupId>
-            <artifactId>gson</artifactId>
-            <version>${gson.version}</version>
-        </dependency>
-        <!-- logging -->
-        <dependency>
-            <groupId>log4j</groupId>
-            <artifactId>log4j</artifactId>
-            <version>${log4j.version}</version>
-        </dependency>
-        <dependency> <!-- needed to bridge to slf4j for projects that use the log4j APIs directly -->
-            <groupId>org.slf4j</groupId>
-            <artifactId>log4j-over-slf4j</artifactId>
-            <version>${org.slf4j.version}</version>
-        </dependency>
-        <!-- test scoped -->
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj-core.version}</version>
-            <scope>test</scope>
-        </dependency>
-    </dependencies>
-
     <build>
         <finalName>core-java-lang</finalName>
         <resources>
@@ -62,10 +23,4 @@
         </resources>
     </build>
 
-    <properties>
-        <gson.version>2.8.2</gson.version>
-        <!-- testing -->
-        <assertj-core.version>3.10.0</assertj-core.version>
-    </properties>
-
 </project>

core-java-modules/core-java-networking/pom.xml

@@ -14,11 +14,6 @@
     </parent>
 
     <dependencies>
-        <dependency>
-            <groupId>commons-io</groupId>
-            <artifactId>commons-io</artifactId>
-            <version>${commons-io.version}</version>
-        </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-web</artifactId>

core-java-modules/core-java-nio/README.md

@@ -5,3 +5,4 @@ This module contains articles about core Java non-blocking input and output (IO)
 ## Relevant Articles:
 
 - [Determine File Creation Date in Java](https://www.baeldung.com/java-file-creation-date)
+- [Find the Number of Lines in a File Using Jav](https://www.baeldung.com/java-file-number-of-lines)

core-java-modules/core-java-optional/pom.xml

@@ -44,25 +44,7 @@
         </dependency>
     </dependencies>
 
-    <build>
-        <plugins>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-compiler-plugin</artifactId>
-                <version>${maven-compiler-plugin.version}</version>
-                <configuration>
-                    <source>${maven.compiler.source}</source>
-                    <target>${maven.compiler.target}</target>
-                </configuration>
-            </plugin>
-        </plugins>
-
-    </build>
-
     <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <maven.compiler.source>1.8</maven.compiler.source>
-        <maven.compiler.target>1.8</maven.compiler.target>
         <hibernate.core.version>5.4.0.Final</hibernate.core.version>
         <jmh-core.version>1.19</jmh-core.version>
         <jmh-generator.version>1.19</jmh-generator.version>

core-java-modules/core-java-os/pom.xml

@@ -54,7 +54,7 @@
         </resources>
 
         <plugins>
-         <plugin>
+            <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
                 <version>${maven-compiler-plugin.version}</version>

core-java-modules/core-java-perf/pom.xml

@@ -1,7 +1,6 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <groupId>com.baeldung</groupId>
     <artifactId>core-java-perf</artifactId>
     <version>0.1.0-SNAPSHOT</version>
     <name>core-java-perf</name>
@@ -14,13 +13,4 @@
         <relativePath>../../parent-java</relativePath>
     </parent>
 
-    <dependencies>
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-lang3</artifactId>
-            <version>${commons-lang3.version}</version>
-        </dependency>
-       
-    </dependencies>
-
 </project>

core-java-modules/core-java-security-manager/pom.xml

@@ -10,25 +10,5 @@
         <artifactId>core-java-modules</artifactId>
         <version>1.0.0-SNAPSHOT</version>
     </parent>
-  
-    <build>
-        <plugins>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-compiler-plugin</artifactId>
-                <version>${maven-compiler-plugin.version}</version>
-                <configuration>
-                    <source>${maven.compiler.source}</source>
-                    <target>${maven.compiler.target}</target>
-                </configuration>
-            </plugin>
-        </plugins>
 
-    </build>
-
-    <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <maven.compiler.source>1.8</maven.compiler.source>
-        <maven.compiler.target>1.8</maven.compiler.target>
-    </properties>
 </project>

core-java-modules/core-java-security/README.md

@@ -14,3 +14,5 @@ This module contains articles about core Java Security
 - [Enabling TLS v1.2 in Java 7](https://www.baeldung.com/java-7-tls-v12)
 - [The Java SecureRandom Class](https://www.baeldung.com/java-secure-random)
 - [An Introduction to Java SASL](https://www.baeldung.com/java-sasl)
+- [A Guide to Java GSS API](https://www.baeldung.com/java-gss)
+

core-java-modules/core-java-security/pom.xml

@@ -1,7 +1,6 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <groupId>com.baeldung</groupId>
     <artifactId>core-java-security</artifactId>
     <version>0.1.0-SNAPSHOT</version>
     <name>core-java-security</name>
@@ -15,11 +14,6 @@
     </parent>
 
     <dependencies>
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-lang3</artifactId>
-            <version>${commons-lang3.version}</version>
-        </dependency>
         <!-- test scoped -->
         <dependency>
             <groupId>org.assertj</groupId>

core-java-modules/core-java-streams/pom.xml

@@ -1,7 +1,6 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <groupId>com.baeldung</groupId>
     <artifactId>core-java-streams</artifactId>
     <version>0.1.0-SNAPSHOT</version>
     <name>core-java-streams</name>
@@ -15,17 +14,6 @@
     </parent>
 
     <dependencies>
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-lang3</artifactId>
-            <version>${commons-lang3.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.projectlombok</groupId>
-            <artifactId>lombok</artifactId>
-            <version>${lombok.version}</version>
-            <scope>provided</scope>
-        </dependency>
         <!-- test scoped -->
         <dependency>
             <groupId>org.assertj</groupId>
@@ -48,7 +36,5 @@
     <properties>
         <!-- testing -->
         <assertj.version>3.6.1</assertj.version>
-        <!-- plugins -->
-        <maven-surefire-plugin.version>2.22.1</maven-surefire-plugin.version>
     </properties>
 </project>

core-java-modules/core-java-string-apis/README.md

@@ -0,0 +1,12 @@
+## Java String APIs
+
+This module contains articles about string APIs.
+
+### Relevant Articles:
+- [Java 8 StringJoiner](https://www.baeldung.com/java-string-joiner)
+- [Quick Guide to the Java StringTokenizer](https://www.baeldung.com/java-stringtokenizer)
+- [Guide to java.util.Formatter](https://www.baeldung.com/java-string-formatter)
+- [Guide to StreamTokenizer](https://www.baeldung.com/java-streamtokenizer)
+- [CharSequence vs. String in Java](https://www.baeldung.com/java-char-sequence-string)
+- [StringBuilder and StringBuffer in Java](https://www.baeldung.com/java-string-builder-string-buffer)
+- [Generate a Secure Random Password in Java](https://www.baeldung.com/java-generate-secure-password)

core-java-modules/core-java-string-apis/pom.xml

@@ -0,0 +1,55 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>core-java-string-apis</artifactId>
+    <version>0.1.0-SNAPSHOT</version>
+    <packaging>jar</packaging>
+    <name>core-java-string-apis</name>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-java</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../parent-java</relativePath>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.openjdk.jmh</groupId>
+            <artifactId>jmh-core</artifactId>
+            <version>${jmh-core.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.openjdk.jmh</groupId>
+            <artifactId>jmh-generator-annprocess</artifactId>
+            <version>${jmh-generator.version}</version>
+        </dependency>
+        <!-- Added for password generation -->
+        <dependency>
+            <groupId>org.passay</groupId>
+            <artifactId>passay</artifactId>
+            <version>${passay.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-text</artifactId>
+            <version>${commons-text.version}</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <finalName>core-java-string-apis</finalName>
+        <resources>
+            <resource>
+                <directory>src/main/resources</directory>
+                <filtering>true</filtering>
+            </resource>
+        </resources>
+    </build>
+
+    <properties>
+        <passay.version>1.3.1</passay.version>
+        <commons-text.version>1.4</commons-text.version>
+    </properties>
+
+</project>

core-java-modules/core-java-string-apis/src/main/java/com/baeldung/password/RandomPasswordGenerator.java

@@ -1,4 +1,11 @@
-package com.baeldung.string.password;
+package com.baeldung.password;
+
+import org.apache.commons.lang3.RandomStringUtils;
+import org.apache.commons.text.RandomStringGenerator;
+import org.passay.CharacterRule;
+import org.passay.EnglishCharacterData;
+import org.passay.CharacterData;
+import org.passay.PasswordGenerator;
 
 import java.security.SecureRandom;
 import java.util.Collections;
@@ -8,13 +15,6 @@ import java.util.stream.Collectors;
 import java.util.stream.IntStream;
 import java.util.stream.Stream;
 
-import org.apache.commons.lang3.RandomStringUtils;
-import org.apache.commons.text.RandomStringGenerator;
-import org.passay.CharacterData;
-import org.passay.CharacterRule;
-import org.passay.EnglishCharacterData;
-import org.passay.PasswordGenerator;
-
 public class RandomPasswordGenerator {
 
     /**

core-java-modules/core-java-string-apis/src/main/java/com/baeldung/streamtokenizer/StreamTokenizerDemo.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.streamtokenizer;
+package com.baeldung.streamtokenizer;
 
 import java.io.*;
 import java.util.ArrayList;

core-java-modules/core-java-string-apis/src/main/java/com/baeldung/stringbuilderstringbuffer/StringBuilderStringBuffer.java

@@ -1,4 +1,4 @@
-package com.baeldung.string;
+package com.baeldung.stringbuilderstringbuffer;
 
 import org.openjdk.jmh.annotations.Benchmark;
 import org.openjdk.jmh.annotations.Scope;
@@ -8,12 +8,12 @@ import org.openjdk.jmh.runner.RunnerException;
 import org.openjdk.jmh.runner.options.Options;
 import org.openjdk.jmh.runner.options.OptionsBuilder;
 
-public class StringBufferStringBuilder {
+public class StringBuilderStringBuffer {
 
     public static void main(String[] args) throws RunnerException {
 
         Options opt = new OptionsBuilder()
-            .include(StringBufferStringBuilder.class.getSimpleName())
+            .include(StringBuilderStringBuffer.class.getSimpleName())
             .build();
 
         new Runner(opt).run();

core-java-modules/core-java-string-apis/src/test/java/com/baeldung/charsequence/CharSequenceVsStringUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.string;
+package com.baeldung.charsequence;
 
 import org.junit.Test;
 

core-java-modules/core-java-string-apis/src/test/java/com/baeldung/formatter/StringFormatterExampleUnitTest.java

@@ -1,12 +1,12 @@
-package com.baeldung.string.formatter;
+package com.baeldung.formatter;
+
+import org.junit.Test;
 
 import java.util.Calendar;
 import java.util.Formatter;
 import java.util.GregorianCalendar;
-import static org.junit.Assert.assertEquals;
+
-import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.*;
-import static org.junit.Assert.assertTrue;
-import org.junit.Test;
 
 public class StringFormatterExampleUnitTest {
 

core-java-modules/core-java-string-apis/src/test/java/com/baeldung/password/StringPasswordUnitTest.java

@@ -1,9 +1,9 @@
-package com.baeldung.string.password;
+package com.baeldung.password;
-
-import static org.junit.Assert.assertTrue;
 
 import org.junit.Test;
 
+import static org.junit.Assert.assertTrue;
+
 /**
  * Examples of passwords conforming to various specifications, using different libraries.
  * 

core-java-modules/core-java-string-apis/src/test/java/com/baeldung/streamtokenizer/StreamTokenizerDemoUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.streamtokenizer;
+package com.baeldung.streamtokenizer;
 
 import org.junit.Test;
 

core-java-modules/core-java-string-apis/src/test/java/com/baeldung/stringjoiner/StringJoinerUnitTest.java

@@ -1,6 +1,6 @@
 package com.baeldung.stringjoiner;
 
-import static org.junit.Assert.assertEquals;
+import org.junit.Test;
 
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -8,7 +8,7 @@ import java.util.List;
 import java.util.StringJoiner;
 import java.util.stream.Collectors;
 
-import org.junit.Test;
+import static org.junit.Assert.assertEquals;
 
 public class StringJoinerUnitTest {
     private final String DELIMITER_COMMA = ",";

core-java-modules/core-java-string-apis/src/test/resources/data.csv

@@ -0,0 +1,3 @@
+1|IND|India
+2|MY|Malaysia
+3|AU|Australia

core-java-modules/core-java-string-conversions-2/README.md

@@ -0,0 +1,9 @@
+## Java String Conversions
+
+This module contains articles about string conversions from/to another type.
+
+### Relevant Articles:
+- [Java String Conversions](https://www.baeldung.com/java-string-conversions)
+- [Convert String to Byte Array and Reverse in Java](https://www.baeldung.com/java-string-to-byte-array)
+- [Convert Char Array to String](https://www.baeldung.com/java-char-array-to-string)
+- More articles: [[<-- prev]](/core-java-string-conversions)

core-java-modules/core-java-string-conversions-2/pom.xml

@@ -0,0 +1,47 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>core-java-string-conversions-2</artifactId>
+    <version>0.1.0-SNAPSHOT</version>
+    <packaging>jar</packaging>
+    <name>core-java-string-conversions-2</name>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-java</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../parent-java</relativePath>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+            <version>${guava.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>${junit.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.hamcrest</groupId>
+            <artifactId>hamcrest-library</artifactId>
+            <version>${org.hamcrest.version}</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <finalName>core-java-string-conversions-2</finalName>
+        <resources>
+            <resource>
+                <directory>src/main/resources</directory>
+                <filtering>true</filtering>
+            </resource>
+        </resources>
+
+    </build>
+
+</project>

core-java-modules/core-java-string-conversions-2/src/main/java/com/baeldung/stringconversions/UseLocalDateTime.java

@@ -1,4 +1,4 @@
-package com.baeldung.datetime;
+package com.baeldung.stringconversions;
 
 import java.time.LocalDateTime;
 

core-java-modules/core-java-string-conversions-2/src/test/java/com/baeldung/chararraytostring/CharArrayToStringConversionUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.charArrayToString;
+package com.baeldung.chararraytostring;
 
 import static org.hamcrest.Matchers.is;
 import static org.junit.Assert.assertThat;

core-java-modules/core-java-string-conversions-2/src/test/java/com/baeldung/stringconversions/StringConversionUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.java.conversion;
+package com.baeldung.stringconversions;
 
 import static org.junit.Assert.assertEquals;
 
@@ -13,8 +13,6 @@ import java.util.GregorianCalendar;
 
 import org.junit.Test;
 
-import com.baeldung.datetime.UseLocalDateTime;
-
 public class StringConversionUnitTest {
 
     @Test

core-java-modules/core-java-string-conversions-2/src/test/java/com/baeldung/stringtobytearray/ByteArrayToStringUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.conversion;
+package com.baeldung.stringtobytearray;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertNotNull;

core-java-modules/core-java-string-conversions-2/src/test/java/com/baeldung/stringtobytearray/StringToByteArrayUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.conversion;
+package com.baeldung.stringtobytearray;
 
 import static org.junit.jupiter.api.Assertions.assertArrayEquals;
 import static org.junit.jupiter.api.Assertions.assertNotNull;

core-java-modules/core-java-string-conversions/README.md

@@ -0,0 +1,16 @@
+## Java String Conversions
+
+This module contains articles about string conversions from/to another type.
+
+### Relevant Articles:
+- [Converting String to Stream of chars](https://www.baeldung.com/java-string-to-stream)
+- [Converting Strings to Enums in Java](https://www.baeldung.com/java-string-to-enum)
+- [Convert a String to Title Case](https://www.baeldung.com/java-string-title-case)
+- [Convert java.util.Date to String](https://www.baeldung.com/java-util-date-to-string)
+- [Converting a Stack Trace to a String in Java](https://www.baeldung.com/java-stacktrace-to-string)
+- [Image to Base64 String Conversion](https://www.baeldung.com/java-base64-image-string)
+- [Convert a Comma Separated String to a List in Java](https://www.baeldung.com/java-string-with-separator-to-list)
+- [Converting Java String to Double](https://www.baeldung.com/java-string-to-double)
+- [Convert Char to String in Java](https://www.baeldung.com/java-convert-char-to-string)
+- [Convert String to int or Integer in Java](https://www.baeldung.com/java-convert-string-to-int-or-integer)
+- More articles: [[next -->]](/core-java-string-conversions-2)

core-java-modules/core-java-string-conversions/pom.xml

@@ -0,0 +1,67 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>core-java-string-conversions</artifactId>
+    <version>0.1.0-SNAPSHOT</version>
+    <packaging>jar</packaging>
+    <name>core-java-string-conversions</name>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-java</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../parent-java</relativePath>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>com.ibm.icu</groupId>
+            <artifactId>icu4j</artifactId>
+            <version>${icu4j.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>commons-io</groupId>
+            <artifactId>commons-io</artifactId>
+            <version>${commons-io.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-lang3</artifactId>
+            <version>${commons-lang3.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+            <version>${guava.version}</version>
+        </dependency>
+        <!-- test scoped -->
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+            <version>${assertj.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.hamcrest</groupId>
+            <artifactId>hamcrest-library</artifactId>
+            <version>${org.hamcrest.version}</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <finalName>core-java-string-conversions</finalName>
+        <resources>
+            <resource>
+                <directory>src/main/resources</directory>
+                <filtering>true</filtering>
+            </resource>
+        </resources>
+    </build>
+
+    <properties>
+        <icu4j.version>61.1</icu4j.version>
+        <assertj.version>3.6.1</assertj.version>
+    </properties>
+
+</project>

core-java-modules/core-java-string-conversions/src/main/java/com/baeldung/stringtoenum/PizzaStatusEnum.java

@@ -1,4 +1,4 @@
-package com.baeldung.enums;
+package com.baeldung.stringtoenum;
 
 public enum PizzaStatusEnum {
     ORDERED(5) {