Merge branch 'master' into bael-16637

.gitignore

@@ -83,4 +83,5 @@ jta/transaction-logs/
 software-security/sql-injection-samples/derby.log
 spring-soap/src/main/java/com/baeldung/springsoap/gen/
 /report-*.json
-transaction.log
+transaction.log
+*-shell.log

akka-streams/README.md

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

algorithms-genetic/README.md

@@ -1,6 +1,6 @@
 ## Relevant articles:
 
-- [Introduction to Jenetics Library](http://www.baeldung.com/jenetics)
+- [Introduction to Jenetics Library](https://www.baeldung.com/jenetics)
-- [Ant Colony Optimization](http://www.baeldung.com/java-ant-colony-optimization)
+- [Ant Colony Optimization](https://www.baeldung.com/java-ant-colony-optimization)
 - [Design a Genetic Algorithm in Java](https://www.baeldung.com/java-genetic-algorithm)
 - [The Traveling Salesman Problem in Java](https://www.baeldung.com/java-simulated-annealing-for-traveling-salesman)

algorithms-miscellaneous-2/README.md

@@ -1,10 +1,10 @@
 ## Relevant articles:
 
-- [Dijkstra Algorithm in Java](https://www.baeldung.com/java-dijkstra)
+- [Dijkstra Shortest Path Algorithm in Java](https://www.baeldung.com/java-dijkstra)
 - [Introduction to Cobertura](https://www.baeldung.com/cobertura)
 - [Test a Linked List for Cyclicity](https://www.baeldung.com/java-linked-list-cyclicity)
 - [Introduction to JGraphT](https://www.baeldung.com/jgrapht)
 - [A Maze Solver in Java](https://www.baeldung.com/java-solve-maze)
 - [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)
+- [A Collaborative Filtering Recommendation System in Java](https://www.baeldung.com/java-collaborative-filtering-recommendations)

algorithms-miscellaneous-3/README.md

@@ -1,11 +1,17 @@
+## 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:
 
 - [Java Two Pointer Technique](https://www.baeldung.com/java-two-pointer-technique)
 - [Implementing Simple State Machines with Java Enums](https://www.baeldung.com/java-enum-simple-state-machine)
-- [Converting Between Roman and Arabic Numerals in Java](http://www.baeldung.com/java-convert-roman-arabic)
+- [Converting Between Roman and Arabic Numerals in Java](https://www.baeldung.com/java-convert-roman-arabic)
-- [Practical Java Examples of the Big O Notation](http://www.baeldung.com/java-algorithm-complexity)
+- [Practical Java Examples of the Big O Notation](https://www.baeldung.com/java-algorithm-complexity)
 - [Checking If a List Is Sorted in Java](https://www.baeldung.com/java-check-if-list-sorted)
 - [Checking if a Java Graph has a Cycle](https://www.baeldung.com/java-graph-has-a-cycle)
 - [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)
+- [Efficient Word Frequency Calculator in Java](https://www.baeldung.com/java-word-frequency)
+- More articles: [[<-- prev]](/algorithms-miscellaneous-2) [[next -->]](/algorithms-miscellaneous-4)

algorithms-sorting/README.md

@@ -1,9 +1,14 @@
-## Relevant articles:
+## Algorithms - Sorting
 
-- [Bubble Sort in Java](http://www.baeldung.com/java-bubble-sort)
+This module contains articles about sorting algorithms.
+
+### Relevant articles:
+
+- [Bubble Sort in Java](https://www.baeldung.com/java-bubble-sort)
 - [Merge Sort in Java](https://www.baeldung.com/java-merge-sort)
 - [Quicksort Algorithm Implementation in Java](https://www.baeldung.com/java-quicksort)
 - [Insertion Sort in Java](https://www.baeldung.com/java-insertion-sort)
 - [Heap Sort in Java](https://www.baeldung.com/java-heap-sort)
 - [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)

animal-sniffer-mvn-plugin/README.md

@@ -1,3 +1,7 @@
-## Relevant articles:
+## Animal Sniffer Maven Plugin
 
-[Introduction to Animal Sniffer Maven Plugin](http://www.baeldung.com/maven-animal-sniffer)
+This module contains articles about the Animal Sniffer Maven Plugin
+
+### Relevant articles:
+
+[Introduction to Animal Sniffer Maven Plugin](https://www.baeldung.com/maven-animal-sniffer)

annotations/README.md

@@ -0,0 +1,7 @@
+## Annotations
+
+This module contains articles about Java annotations
+
+### Relevant Articles:
+
+- [Java Annotation Processing and Creating a Builder](https://www.baeldung.com/java-annotation-processing-builder)

annotations/readme.md

@@ -1,2 +0,0 @@
-### Relevant Articles:
-- [Java Annotation Processing and Creating a Builder](http://www.baeldung.com/java-annotation-processing-builder)

antlr/README.md

@@ -1,3 +1,7 @@
+## ANTLR
+
+This module contains articles about ANTLR
+
 ### Relevant Articles: 
 
-- [Java with ANTLR](http://www.baeldung.com/java-antlr)
+- [Java with ANTLR](https://www.baeldung.com/java-antlr)

apache-avro/README.md

@@ -1,2 +1,6 @@
+## Apache Avro
+
+This module contains articles about Apache Avro
+
 ### Relevant Articles:
-- [Guide to Apache Avro](http://www.baeldung.com/java-apache-avro)
+- [Guide to Apache Avro](https://www.baeldung.com/java-apache-avro)

apache-bval/README.md

@@ -1,2 +1,7 @@
+## Apache BVal
+
+This module contains articles about Apache BVal
+
 ### Relevant Articles:
-- [Intro to Apache BVal](http://www.baeldung.com/apache-bval)
+
+- [Intro to Apache BVal](https://www.baeldung.com/apache-bval)

apache-curator/README.md

@@ -1,3 +1,7 @@
+## Apache Curator
+
+This module contains articles about Apache Curator
+
 ### Relevant Articles:
 
-- [Introduction to Apache Curator](http://www.baeldung.com/apache-curator)
+- [Introduction to Apache Curator](https://www.baeldung.com/apache-curator)

apache-cxf/README.md

@@ -1,6 +1,10 @@
+## Apache CXF
+
+This module contains articles about Apache CXF
+
 ## Relevant Articles:
-- [Introduction to Apache CXF Aegis Data Binding](http://www.baeldung.com/aegis-data-binding-in-apache-cxf)
+- [Introduction to Apache CXF Aegis Data Binding](https://www.baeldung.com/aegis-data-binding-in-apache-cxf)
-- [Apache CXF Support for RESTful Web Services](http://www.baeldung.com/apache-cxf-rest-api)
+- [Apache CXF Support for RESTful Web Services](https://www.baeldung.com/apache-cxf-rest-api)
-- [A Guide to Apache CXF with Spring](http://www.baeldung.com/apache-cxf-with-spring)
+- [A Guide to Apache CXF with Spring](https://www.baeldung.com/apache-cxf-with-spring)
-- [Introduction to Apache CXF](http://www.baeldung.com/introduction-to-apache-cxf)
+- [Introduction to Apache CXF](https://www.baeldung.com/introduction-to-apache-cxf)
 - [Server-Sent Events (SSE) In JAX-RS](https://www.baeldung.com/java-ee-jax-rs-sse)

apache-fop/README.md

@@ -1,5 +1,5 @@
-=========
+## Apache FOP
 
-## Core Java Cookbooks and Examples
+This module contains articles about Apache FOP
 
 ### Relevant Articles: 

apache-geode/README.md

@@ -1,3 +1,7 @@
+## Apache Geode
+
+This module contains articles about Apache Geode
+
 ### Relevant Articles: 
 
 - [A Quick Guide to Apache Geode](https://www.baeldung.com/apache-geode)

apache-meecrowave/README.md

@@ -1,3 +1,7 @@
+## Apache Meecrowave
+
+This module contains articles about Apache Meecrowave
+
 ### Relevant Articles: 
-================================
+
-- [Building a Microservice with Apache Meecrowave](http://www.baeldung.com/apache-meecrowave)
+- [Building a Microservice with Apache Meecrowave](https://www.baeldung.com/apache-meecrowave)

apache-olingo/README.md

@@ -1,3 +1,8 @@
-## Relevant articles:
+## Apache Olingo
+
+This module contains articles about Apache Olingo
+
+### Relevant articles:
 
 - [OData Protocol Guide](https://www.baeldung.com/odata)
+- [Intro to OData with Olingo](https://www.baeldung.com/olingo)

apache-opennlp/README.md

@@ -1,3 +1,7 @@
+## Apache OpenNLP
+
+This module contains articles about Apache OpenNLP
+
 ### Relevant Articles
 
-- [Intro to Apache OpenNLP](http://www.baeldung.com/apache-open-nlp)
+- [Intro to Apache OpenNLP](https://www.baeldung.com/apache-open-nlp)

apache-poi/README.md

@@ -1,4 +1,8 @@
+## Apache POI
+
+This module contains articles about Apache POI
+
 ### Relevant Articles:
-- [Microsoft Word Processing in Java with Apache POI](http://www.baeldung.com/java-microsoft-word-with-apache-poi)
+- [Microsoft Word Processing in Java with Apache POI](https://www.baeldung.com/java-microsoft-word-with-apache-poi)
-- [Working with Microsoft Excel in Java](http://www.baeldung.com/java-microsoft-excel)
+- [Working with Microsoft Excel in Java](https://www.baeldung.com/java-microsoft-excel)
-- [Creating a MS PowerPoint Presentation in Java](http://www.baeldung.com/apache-poi-slideshow)
+- [Creating a MS PowerPoint Presentation in Java](https://www.baeldung.com/apache-poi-slideshow)

apache-pulsar/README.md

@@ -1,3 +1,7 @@
+## Apache Pulsar
+
+This module contains articles about Apache Pulsar
+
 ### Relevant Articles: 
 
 - [Introduction to Apache Pulsar](https://www.baeldung.com/apache-pulsar)

apache-shiro/README.md

@@ -1,2 +1,7 @@
-### Relevant articles
+## Apache Shiro
-- [Introduction to Apache Shiro](http://www.baeldung.com/apache-shiro)
+
+This module contains articles about Apache Shiro
+
+### Relevant articles:
+
+- [Introduction to Apache Shiro](https://www.baeldung.com/apache-shiro)

apache-solrj/README.md

@@ -1,4 +1,7 @@
-## Apache Solrj Tutorials Project
+## Apache Solrj
 
-### Relevant Articles
+This module contains articles about Apache Solrj
-- [Guide to Solr in Java with Apache Solrj](http://www.baeldung.com/apache-solrj)
+
+### Relevant Articles:
+
+- [Guide to Solr in Java with Apache Solrj](https://www.baeldung.com/apache-solrj)

apache-spark/README.md

@@ -1,4 +1,8 @@
-### Relevant articles
+## Apache Spark
 
-- [Introduction to Apache Spark](http://www.baeldung.com/apache-spark)
+This module contains articles about Apache Spark
+
+### Relevant articles:
+
+- [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)

apache-thrift/README.md

@@ -1,3 +1,7 @@
-## Relevant articles:
+## Apache Thrift
 
-- [Working with Apache Thrift](http://www.baeldung.com/apache-thrift)
+This module contains articles about Apache Thrift
+
+### Relevant articles:
+
+- [Working with Apache Thrift](https://www.baeldung.com/apache-thrift)

apache-tika/README.md

@@ -1,3 +1,7 @@
-## Relevant articles:
+## Apache Tika
 
-- [Content Analysis with Apache Tika](http://www.baeldung.com/apache-tika)
+This module contains articles about Apache Tika
+
+### Relevant articles:
+
+- [Content Analysis with Apache Tika](https://www.baeldung.com/apache-tika)

apache-velocity/README.md

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

apache-zookeeper/README.md

@@ -1,3 +1,7 @@
-## Relevant articles:
+## Apache Zookeeper
 
-- [Getting Started with Java and Zookeeper](http://www.baeldung.com/java-zookeeper)
+This module contains articles about Apache Zookeeper
+
+### Relevant articles:
+
+- [Getting Started with Java and Zookeeper](https://www.baeldung.com/java-zookeeper)

asciidoctor/README.md

@@ -1,4 +1,8 @@
-### Relevant articles
+## Asciidoctor
 
-- [Generating a Book with Asciidoctor](http://www.baeldung.com/asciidoctor-book)
+This module contains articles about Asciidoctor
-- [Introduction to Asciidoctor in Java](http://www.baeldung.com/asciidoctor)
+
+### Relevant articles:
+
+- [Generating a Book with Asciidoctor](https://www.baeldung.com/asciidoctor-book)
+- [Introduction to Asciidoctor in Java](https://www.baeldung.com/asciidoctor)

asm/README.md

@@ -1,3 +1,7 @@
+## ASM
+
+This module contains articles about ASM
+
 ### Relevant Articles:
 
-- [A Guide to Java Bytecode Manipulation with ASM](http://www.baeldung.com/java-asm)
+- [A Guide to Java Bytecode Manipulation with ASM](https://www.baeldung.com/java-asm)

atomix/README.md

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

autovalue/README.md

@@ -1,4 +0,0 @@
-### Relevant Articles:
-- [Introduction to AutoValue](http://www.baeldung.com/introduction-to-autovalue)
-- [Introduction to AutoFactory](http://www.baeldung.com/autofactory)
-- [Google AutoService](https://www.baeldung.com/google-autoservice)

aws-lambda/README.md

@@ -1,3 +1,7 @@
+## AWS Lambda
+
+This module contains articles about AWS Lambda
+
 ### Relevant Articles: 
-- [Using AWS Lambda with API Gateway](http://www.baeldung.com/aws-lambda-api-gateway)
+- [Using AWS Lambda with API Gateway](https://www.baeldung.com/aws-lambda-api-gateway)
-- [Introduction to AWS Serverless Application Model](http://www.baeldung.com/aws-serverless)
+- [Introduction to AWS Serverless Application Model](https://www.baeldung.com/aws-serverless)

aws/README.md

@@ -1,11 +1,15 @@
+## AWS
+
+This module contains articles about AWS
+
 ### Relevant articles
 
-- [AWS Lambda Using DynamoDB With Java](http://www.baeldung.com/aws-lambda-dynamodb-java)
+- [AWS Lambda Using DynamoDB With Java](https://www.baeldung.com/aws-lambda-dynamodb-java)
-- [AWS S3 with Java](http://www.baeldung.com/aws-s3-java)
+- [AWS S3 with Java](https://www.baeldung.com/aws-s3-java)
-- [AWS Lambda With Java](http://www.baeldung.com/java-aws-lambda)
+- [AWS Lambda With Java](https://www.baeldung.com/java-aws-lambda)
-- [Managing EC2 Instances in Java](http://www.baeldung.com/ec2-java)
+- [Managing EC2 Instances in Java](https://www.baeldung.com/ec2-java)
-- [Multipart Uploads in Amazon S3 with Java](http://www.baeldung.com/aws-s3-multipart-upload)
+- [Multipart Uploads in Amazon S3 with Java](https://www.baeldung.com/aws-s3-multipart-upload)
-- [Integration Testing with a Local DynamoDB Instance](http://www.baeldung.com/dynamodb-local-integration-tests)
+- [Integration Testing with a Local DynamoDB Instance](https://www.baeldung.com/dynamodb-local-integration-tests)
-- [Using the JetS3t Java Client With Amazon S3](http://www.baeldung.com/jets3t-amazon-s3)
+- [Using the JetS3t Java Client With Amazon S3](https://www.baeldung.com/jets3t-amazon-s3)
-- [Managing Amazon SQS Queues in Java](http://www.baeldung.com/aws-queues-java)
+- [Managing Amazon SQS Queues in Java](https://www.baeldung.com/aws-queues-java)
 - [Guide to AWS Aurora RDS with Java](https://www.baeldung.com/aws-aurora-rds-java)

axon/README.md

@@ -1,3 +1,7 @@
+## Axon
+
+This module contains articles about Axon
+
 ### Relevant articles
 
-- [A Guide to the Axon Framework](http://www.baeldung.com/axon-cqrs-event-sourcing)
+- [A Guide to the Axon Framework](https://www.baeldung.com/axon-cqrs-event-sourcing)

azure/README.md

@@ -1,4 +1,8 @@
+## Azure
+
+This module contains articles about Azure
+
 ### Relevant Articles:
 
-- [Deploy a Spring Boot App to Azure](http://www.baeldung.com/spring-boot-azure)
+- [Deploy a Spring Boot App to Azure](https://www.baeldung.com/spring-boot-azure)
 

bazel/README.md

@@ -1,3 +1,7 @@
-## Relevant Articles:
+## Bazel
+
+This module contains articles about Bazel
+
+### Relevant Articles:
 
 - [Building Java Applications with Bazel](https://www.baeldung.com/bazel-build-tool)

blade/README.md

@@ -1,5 +1,5 @@
 ### Relevant Articles: 
 
-- [Blade – A Complete Guidebook](http://www.baeldung.com/blade) 
+- [Blade – A Complete Guidebook](https://www.baeldung.com/blade) 
 
 Run Integration Tests with `mvn integration-test`

bootique/README.md

@@ -1,2 +1,6 @@
+## Bootique
+
+This module contains articles about Bootique
+
 ### Relevant Articles:
-- [Introduction to Bootique](http://www.baeldung.com/bootique)
+- [Introduction to Bootique](https://www.baeldung.com/bootique)

cas/README.md

@@ -0,0 +1,7 @@
+## CAS
+
+This module contains articles about the Central Authentication Service (CAS)
+
+### Relevant Articles: 
+
+- [CAS SSO With Spring Security](baeldung.com/spring-security-cas-sso)

cdi/README.md

@@ -1,5 +1,9 @@
+## CDI
+
+This module contains articles about Contexts and Dependency Injection (CDI)
+
 ### Relevant Articles:
-- [CDI Interceptor vs Spring AspectJ](http://www.baeldung.com/cdi-interceptor-vs-spring-aspectj)
+- [CDI Interceptor vs Spring AspectJ](https://www.baeldung.com/cdi-interceptor-vs-spring-aspectj)
-- [An Introduction to CDI (Contexts and Dependency Injection) in Java](http://www.baeldung.com/java-ee-cdi)
+- [An Introduction to CDI (Contexts and Dependency Injection) in Java](https://www.baeldung.com/java-ee-cdi)
 - [Introduction to the Event Notification Model in CDI 2.0](https://www.baeldung.com/cdi-event-notification)
 

cdi/src/main/java/com/baeldung/cdi2observers/application/BootstrappingApplication.java

@@ -1,15 +1,16 @@
-package com.baeldung.cdi.cdi2observers.application;
+package com.baeldung.cdi2observers.application;
-
+
-import com.baeldung.cdi.cdi2observers.events.ExampleEvent;
+import com.baeldung.cdi2observers.events.ExampleEvent;
-import javax.enterprise.inject.se.SeContainer;
+
-import javax.enterprise.inject.se.SeContainerInitializer;
+import javax.enterprise.inject.se.SeContainer;
-
+import javax.enterprise.inject.se.SeContainerInitializer;
-public class BootstrappingApplication {
+
-    
+public class BootstrappingApplication {
-    public static void main(String... args) {
+    
-        SeContainerInitializer containerInitializer = SeContainerInitializer.newInstance();
+    public static void main(String... args) {
-        try (SeContainer container = containerInitializer.initialize()) {
+        SeContainerInitializer containerInitializer = SeContainerInitializer.newInstance();
-            container.getBeanManager().fireEvent(new ExampleEvent("Welcome to Baeldung!"));
+        try (SeContainer container = containerInitializer.initialize()) {
-        }
+            container.getBeanManager().fireEvent(new ExampleEvent("Welcome to Baeldung!"));
-    }
+        }
-}
+    }
+}

cdi/src/main/java/com/baeldung/cdi2observers/events/ExampleEvent.java

@@ -1,14 +1,14 @@
-package com.baeldung.cdi.cdi2observers.events;
+package com.baeldung.cdi2observers.events;
-
+
-public class ExampleEvent {
+public class ExampleEvent {
-    
+    
-   private final String eventMessage;
+   private final String eventMessage;
-
+
-    public ExampleEvent(String eventMessage) {
+    public ExampleEvent(String eventMessage) {
-        this.eventMessage = eventMessage;
+        this.eventMessage = eventMessage;
-    }
+    }
-    
+    
-    public String getEventMessage() {
+    public String getEventMessage() {
-        return eventMessage;
+        return eventMessage;
-    }
+    }
-}
+}

cdi/src/main/java/com/baeldung/cdi2observers/events/ExampleEventSource.java

@@ -1,14 +1,14 @@
-package com.baeldung.cdi.cdi2observers.events;
+package com.baeldung.cdi2observers.events;
-
+
-import javax.enterprise.event.Event;
+import javax.enterprise.event.Event;
-import javax.inject.Inject;
+import javax.inject.Inject;
-
+
-public class ExampleEventSource {
+public class ExampleEventSource {
-    
+    
-    @Inject
+    @Inject
-    Event<ExampleEvent> exampleEvent;
+    Event<ExampleEvent> exampleEvent;
-    
+    
-    public void fireEvent() {
+    public void fireEvent() {
-        exampleEvent.fireAsync(new ExampleEvent("Welcome to Baeldung!"));
+        exampleEvent.fireAsync(new ExampleEvent("Welcome to Baeldung!"));
-    }   
+    }   
-}
+}

cdi/src/main/java/com/baeldung/cdi2observers/observers/AnotherExampleEventObserver.java

@@ -1,12 +1,13 @@
-package com.baeldung.cdi.cdi2observers.observers;
+package com.baeldung.cdi2observers.observers;
-
+
-import com.baeldung.cdi.cdi2observers.events.ExampleEvent;
+import com.baeldung.cdi2observers.events.ExampleEvent;
-import javax.annotation.Priority;
+
-import javax.enterprise.event.Observes;
+import javax.annotation.Priority;
-
+import javax.enterprise.event.Observes;
-public class AnotherExampleEventObserver {
+
-    
+public class AnotherExampleEventObserver {
-    public String onEvent(@Observes @Priority(2) ExampleEvent event) {
+    
-        return event.getEventMessage();
+    public String onEvent(@Observes @Priority(2) ExampleEvent event) {
-    }   
+        return event.getEventMessage();
-}
+    }   
+}

cdi/src/main/java/com/baeldung/cdi2observers/observers/ExampleEventObserver.java

@@ -1,13 +1,13 @@
-package com.baeldung.cdi.cdi2observers.observers;
+package com.baeldung.cdi2observers.observers;
-
+
-import com.baeldung.cdi.cdi2observers.events.ExampleEvent;
+import com.baeldung.cdi2observers.events.ExampleEvent;
-import com.baeldung.cdi.cdi2observers.services.TextService;
+import com.baeldung.cdi2observers.services.TextService;
-import javax.annotation.Priority;
+import javax.annotation.Priority;
-import javax.enterprise.event.Observes;
+import javax.enterprise.event.Observes;
-
+
-public class ExampleEventObserver {
+public class ExampleEventObserver {
-    
+    
-    public String onEvent(@Observes @Priority(1) ExampleEvent event, TextService textService) {
+    public String onEvent(@Observes @Priority(1) ExampleEvent event, TextService textService) {
-        return textService.parseText(event.getEventMessage());
+        return textService.parseText(event.getEventMessage());
-    } 
+    } 
-}
+}

cdi/src/main/java/com/baeldung/cdi2observers/services/TextService.java

@@ -1,8 +1,8 @@
-package com.baeldung.cdi.cdi2observers.services;
+package com.baeldung.cdi2observers.services;
-
+
-public class TextService {
+public class TextService {
-
+
-    public String parseText(String text) {
+    public String parseText(String text) {
-        return text.toUpperCase();
+        return text.toUpperCase();
-    }
+    }
-}
+}

cdi/src/main/resources/META-INF/beans.xml

@@ -1,7 +1,8 @@
-<beans xmlns="http://java.sun.com/xml/ns/javaee"
+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns="http://xmlns.jcp.org/xml/ns/javaee"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-       xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
+       xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/beans_1_1.xsd"
-      http://java.sun.com/xml/ns/javaee/beans_1_2.xsd">
+       bean-discovery-mode="all">
     <interceptors>
         <class>com.baeldung.interceptor.AuditedInterceptor</class>
     </interceptors>

cdi/src/test/java/com/baeldung/test/cdi2observers/tests/TextServiceUnitTest.java

@@ -1,14 +1,15 @@
-package com.baeldung.cdi.cdi2observers.tests;
+package com.baeldung.test.cdi2observers.tests;
-
+
-import com.baeldung.cdi.cdi2observers.services.TextService;
+import com.baeldung.cdi2observers.services.TextService;
-import static org.assertj.core.api.Assertions.assertThat;
+import org.junit.Test;
-import org.junit.Test;
+
-
+import static org.assertj.core.api.Assertions.assertThat;
-public class TextServiceUnitTest {
+
-
+public class TextServiceUnitTest {
-    @Test
+
-    public void givenTextServiceInstance_whenCalledparseText_thenCorrect() {
+    @Test
-        TextService textService = new TextService();
+    public void givenTextServiceInstance_whenCalledparseText_thenCorrect() {
-        assertThat(textService.parseText("Baeldung")).isEqualTo("BAELDUNG");
+        TextService textService = new TextService();
-    }
+        assertThat(textService.parseText("Baeldung")).isEqualTo("BAELDUNG");
-}
+    }
+}

cdi/src/test/java/com/baeldung/test/dependencyinjection/TimeLoggerFactoryUnitTest.java

@@ -6,7 +6,6 @@ import static org.assertj.core.api.Assertions.assertThat;
 import org.junit.Test;
 
 public class TimeLoggerFactoryUnitTest {
-    
     @Test
     public void givenTimeLoggerFactory_whenCalledgetTimeLogger_thenOneAssertion() {
         TimeLoggerFactory timeLoggerFactory = new TimeLoggerFactory();

checker-plugin/README.md

@@ -1,3 +1,7 @@
+## Checker Plugin
+
+This module contains articles about the Checker Plugin
+
 ### Relevant articles
 
-- [The Checker Framework – Pluggable Type Systems for Java](http://www.baeldung.com/checker-framework)
+- [The Checker Framework – Pluggable Type Systems for Java](https://www.baeldung.com/checker-framework)

cloud-foundry-uaa/README.md

@@ -1,3 +1,7 @@
-### Revelant Articles
+## Cloud Foundry UAA
+
+This module contains articles about Cloud Foundry UAA
+
+### Relevant Articles:
 
 - [A Quick Guide To Using Cloud Foundry UAA](https://www.baeldung.com/cloud-foundry-uaa)

code-generation/README.md

@@ -0,0 +1,9 @@
+## Code Generation
+
+This module contains articles about automatic code generation
+
+### Relevant Articles:
+
+- [Introduction to AutoValue](https://www.baeldung.com/introduction-to-autovalue)
+- [Introduction to AutoFactory](https://www.baeldung.com/autofactory)
+- [Google AutoService](https://www.baeldung.com/google-autoservice)

code-generation/pom.xml

@@ -2,9 +2,9 @@
     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>autovalue</artifactId>
+    <artifactId>code-generation</artifactId>
     <version>1.0</version>
-    <name>autovalue</name>
+    <name>code-generation</name>
 
     <parent>
         <groupId>com.baeldung</groupId>

core-groovy-2/README.md

@@ -1,11 +1,14 @@
-# Groovy
+# Core Groovy 2
+
+This module contains articles about core Groovy concepts
 
 ## Relevant articles:
 
-- [String Matching in Groovy](http://www.baeldung.com/)
 - [Template Engines in Groovy](https://www.baeldung.com/groovy-template-engines)
 - [Groovy def Keyword](https://www.baeldung.com/groovy-def-keyword)
 - [Pattern Matching in Strings in Groovy](https://www.baeldung.com/groovy-pattern-matching)
 - [Working with XML in Groovy](https://www.baeldung.com/groovy-xml)
 - [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)

core-groovy-collections/README.md

@@ -1,4 +1,6 @@
-# Groovy
+## Core Groovy Collections
+
+This module contains articles about Groovy core collections
 
 ## Relevant articles:
 

core-groovy/README.md

@@ -1,9 +1,11 @@
-# Groovy
+# Core Groovy
+
+This module contains articles about core Groovy concepts
 
 ## Relevant articles:
 
-- [JDBC with Groovy](http://www.baeldung.com/jdbc-groovy)
+- [JDBC with Groovy](https://www.baeldung.com/jdbc-groovy)
-- [Working with JSON in Groovy](http://www.baeldung.com/groovy-json)
+- [Working with JSON in Groovy](https://www.baeldung.com/groovy-json)
 - [Reading a File in Groovy](https://www.baeldung.com/groovy-file-read)
 - [Types of Strings in Groovy](https://www.baeldung.com/groovy-strings)
 - [A Quick Guide to Iterating a Map in Groovy](https://www.baeldung.com/groovy-map-iterating)
@@ -12,4 +14,5 @@
 - [Finding Elements in Collections in Groovy](https://www.baeldung.com/groovy-collections-find-elements)
 - [Lists in Groovy](https://www.baeldung.com/groovy-lists)
 - [Converting a String to a Date in Groovy](https://www.baeldung.com/groovy-string-to-date)
-- [Guide to I/O in Groovy](https://www.baeldung.com/groovy-io)
+- [Guide to I/O in Groovy](https://www.baeldung.com/groovy-io)
+- [[More -->]](/core-groovy-2)

core-java-modules/README.md

@@ -1,3 +1,7 @@
+## Core Java Modules
+
+This module contains modules about core Java
+
 ## Relevant articles:
 
 - [Multi-Module Maven Application with Java Modules](https://www.baeldung.com/maven-multi-module-project-java-jpms)

core-java-modules/core-java-10/README.md

@@ -1,3 +1,6 @@
+## Core Java 10
+
+This module contains articles about Java 10 core features
 
 ### Relevant Articles: 
 

core-java-modules/core-java-11/README.md

@@ -1,3 +1,7 @@
+## Core Java 11
+
+This module contains articles about Java 11 core features
+
 ### Relevant articles
 
 - [Java 11 Single File Source Code](https://www.baeldung.com/java-single-file-source-code)

core-java-modules/core-java-8-2/README.md

@@ -1,10 +1,11 @@
-=========
+## Core Java 8 (part 2)
 
-## Core Java 8 Cookbooks and Examples (part 2)
+This module contains articles about Java 8 core features
 
 ### Relevant Articles: 
 - [Anonymous Classes in Java](http://www.baeldung.com/)
 - [How to Delay Code Execution in Java](https://www.baeldung.com/java-delay-code-execution)
-- [Run JAR Application With Command Line Arguments](https://www.baeldung.com/java-run-jar-with-arguments)
+- [Run a Java Application from the Command Line](https://www.baeldung.com/java-run-jar-with-arguments)
 - [Java 8 Stream skip() vs limit()](https://www.baeldung.com/java-stream-skip-vs-limit)
 - [Guide to Java BiFunction Interface](https://www.baeldung.com/java-bifunction-interface)
+- [[<-- Prev]](/core-java-modules/core-java-8)

core-java-modules/core-java-8/README.md

@@ -1,6 +1,6 @@
-=========
+## Core Java 8
 
-## Core Java 8 Cookbooks and Examples
+This module contains articles about Java 8 core features
 
 ### Relevant Articles: 
 - [New Features in Java 8](https://www.baeldung.com/java-8-new-features)
@@ -12,3 +12,4 @@
 - [Finding Min/Max in an Array with Java](https://www.baeldung.com/java-array-min-max)
 - [Internationalization and Localization in Java 8](https://www.baeldung.com/java-8-localization)
 - [Generalized Target-Type Inference in Java](https://www.baeldung.com/java-generalized-target-type-inference)
+- [[More -->]](/core-java-modules/core-java-8-2)

core-java-modules/core-java-9/README.md

@@ -1,8 +1,6 @@
-=========
+## Core Java 9
 
-## Core Java 9  Examples
+This module contains articles about Java 9 core features
-
-[Java 9 New Features](http://www.baeldung.com/new-java-9)
 
 ### Relevant Articles:
 

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

@@ -1,3 +1,7 @@
+## Core Java Arrays (Part 2)
+
+This module contains articles about Java arrays
+
 ## Relevant Articles
 
 - [Extending an Array’s Length](https://www.baeldung.com/java-array-add-element-at-the-end)
@@ -8,3 +12,4 @@
 - [Intersection Between two Integer Arrays](https://www.baeldung.com/java-array-intersection)
 - [Removing an Element from an Array in Java](https://www.baeldung.com/java-array-remove-element)
 - [Removing the First Element of an Array](https://www.baeldung.com/java-array-remove-first-element)
+- [[<-- Prev]](/core-java-modules/core-java-arrays)

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

@@ -1,6 +1,6 @@
-=========
+## Core Java Arrays
 
-## Core Java Arrays Cookbooks and Examples
+This module contains articles about Java arrays
 
 ### Relevant Articles: 
 - [How to Copy an Array in Java](https://www.baeldung.com/java-array-copy)
@@ -10,6 +10,8 @@
 - [Multi-Dimensional Arrays In Java](https://www.baeldung.com/java-jagged-arrays)
 - [Find Sum and Average in a Java Array](https://www.baeldung.com/java-array-sum-average)
 - [Arrays in Java: A Reference Guide](https://www.baeldung.com/java-arrays-guide)
-- [How to Invert an Array in Java](https://www.baeldung.com/java-invert-array)
+- [Read and Write User Input in Java](https://www.baeldung.com/java-console-input-output)
+- [How to Reverse an Array in Java](http://www.baeldung.com/java-invert-array)
 - [Sorting Arrays in Java](https://www.baeldung.com/java-sorting-arrays)
 - [Checking If an Array Is Sorted in Java](https://www.baeldung.com/java-check-sorted-array)
+- [[More -->]](/core-java-modules/core-java-arrays-2)

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

@@ -1,6 +1,6 @@
-=========
+## Core Java Collections ArrayList
 
-## Core Java Collections Array List Cookbooks and Examples
+This module contains articles about the Java ArrayList collection
 
 ### Relevant Articles: 
 - [Immutable ArrayList in Java](http://www.baeldung.com/java-immutable-list)

core-java-modules/core-java-collections-list-2/README.md

@@ -1,6 +1,6 @@
-=========
+## Core Java Collections List (Part 2)
 
-## Core Java Collections List Cookbooks and Examples
+This module contains articles about the Java List collection
 
 ### Relevant Articles: 
 - [Check If Two Lists are Equal in Java](http://www.baeldung.com/java-test-a-list-for-ordinality-and-equality)
@@ -10,4 +10,5 @@
 - [Java List Initialization in One Line](https://www.baeldung.com/java-init-list-one-line)
 - [Ways to Iterate Over a List in Java](https://www.baeldung.com/java-iterate-list)
 - [Flattening Nested Collections in Java](http://www.baeldung.com/java-flatten-nested-collections)
-- [Intersection of Two Lists in Java](https://www.baeldung.com/java-lists-intersection)
+- [Intersection of Two Lists in Java](https://www.baeldung.com/java-lists-intersection)
+- [[<-- Prev]](/core-java-modules/core-java-collections-list)[[Next -->]](/core-java-modules/core-java-collections-list-3)

core-java-modules/core-java-collections-list-2/src/main/java/com/baeldung/findastring/FindAStringInGivenList.java

@@ -0,0 +1,72 @@
+package com.baeldung.findastring;
+
+import com.google.common.base.Predicates;
+import com.google.common.collect.Iterables;
+import com.google.common.collect.Lists;
+import org.apache.commons.collections4.IterableUtils;
+import org.apache.commons.collections4.IteratorUtils;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.regex.Pattern;
+import java.util.stream.Collectors;
+
+public class FindAStringInGivenList {
+
+
+    public List<String> findUsingLoopWithRegex(String search, List<String> list) {
+
+        List<String> matches = new ArrayList<String>();
+
+        String pattern = ".*"+search+".*";
+        Pattern p = Pattern.compile(pattern);
+
+        for(String str: list) {
+            if (p.matcher(str).matches()) {
+                matches.add(str);
+            }
+        }
+
+        return matches;
+    }
+
+
+    public List<String> findUsingLoop(String search, List<String> list) {
+
+        List<String> matches = new ArrayList<String>();
+
+        for(String str: list) {
+            if (str.contains(search)) {
+                matches.add(str);
+            }
+        }
+
+        return matches;
+    }
+
+    public List<String> findUsingStream(String search, List<String> list) {
+
+        List<String> matchingElements =
+                list.stream()
+                        .filter(str -> str.trim().contains(search))
+                        .collect(Collectors.toList());
+
+        return matchingElements;
+    }
+
+    public List<String> findUsingGuava(String search, List<String> list) {
+        Iterable<String> result = Iterables.filter(list, Predicates.containsPattern(search));
+
+        return Lists.newArrayList(result.iterator());
+    }
+
+    public List<String> findUsingCommonsCollection(String search, List<String> list) {
+        Iterable<String> result = IterableUtils.filteredIterable(list, new org.apache.commons.collections4.Predicate<String>() {
+            public boolean evaluate(String listElement) {
+                return listElement.contains(search);
+            }
+        });
+
+        return IteratorUtils.toList(result.iterator());
+    }
+
+}

core-java-modules/core-java-collections-list-2/src/test/java/com/baeldung/findastring/FindAStringInListUnitTest.java

@@ -0,0 +1,62 @@
+package com.baeldung.findastring;
+
+import java.util.ArrayList;
+import java.util.List;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import org.junit.Test;
+public class FindAStringInListUnitTest {
+
+    private static List<String> list = new ArrayList<>();
+
+    static {
+        list.add("Jack and Jill");
+        list.add("James and Sarah");
+        list.add("Sam and Louise");
+        list.add("Jack");
+        list.add("");
+    }
+
+    private static FindAStringInGivenList findAStringInGivenList = new FindAStringInGivenList();
+
+    @Test
+    public void givenAString_whenFoundUsingLoopWithRegex_thenReturnList() {
+        List matchingElements = findAStringInGivenList.findUsingLoopWithRegex("Jack", list);
+        assertEquals(2, matchingElements.size());
+        assertEquals("Jack and Jill", matchingElements.get(0));
+        assertEquals("Jack", matchingElements.get(1));
+    }
+
+    @Test
+    public void givenAString_whenFoundUsingLoop_thenReturnList() {
+        List matchingElements = findAStringInGivenList.findUsingLoop("Jack", list);
+        assertEquals(2, matchingElements.size());
+        assertEquals("Jack and Jill", matchingElements.get(0));
+        assertEquals("Jack", matchingElements.get(1));
+    }
+
+
+    @Test
+    public void givenAString_whenFoundUsingStream_thenReturnList(){
+        List matchingElements = findAStringInGivenList.findUsingStream("Jack", list);
+        assertEquals(2, matchingElements.size());
+        assertEquals("Jack and Jill", matchingElements.get(0));
+        assertEquals("Jack", matchingElements.get(1));
+    }
+
+    @Test
+    public void givenAString_whenFoundUsingCommonsCollection_thenReturnList(){
+        List matchingElements = findAStringInGivenList.findUsingCommonsCollection("Jack", list);
+        assertEquals(2, matchingElements.size());
+        assertEquals("Jack and Jill", matchingElements.get(0));
+        assertEquals("Jack", matchingElements.get(1));
+    }
+
+    @Test
+    public void givenAString_whenFoundUsingGuava_thenReturnList(){
+        List matchingElements = findAStringInGivenList.findUsingGuava("Jack", list);
+        assertEquals(2, matchingElements.size());
+        assertEquals("Jack and Jill", matchingElements.get(0));
+        assertEquals("Jack", matchingElements.get(1));
+    }
+
+}

core-java-modules/core-java-collections-list-3/README.md

@@ -1,6 +1,6 @@
-=========
+## Core Java Collections List (Part 3)
 
-## Core Java Collections List Cookbooks and Examples
+This module contains articles about the Java List collection
 
 ### Relevant Articles: 
 - [Collections.emptyList() vs. New List Instance](https://www.baeldung.com/java-collections-emptylist-new-list)
@@ -9,3 +9,4 @@
 - [List of Primitive Integer Values in Java](https://www.baeldung.com/java-list-primitive-int)
 - [Performance Comparison of Primitive Lists in Java](https://www.baeldung.com/java-list-primitive-performance)
 - [Filtering a Java Collection by a List](https://www.baeldung.com/java-filter-collection-by-list)
+- [[<-- Prev]](/core-java-modules/core-java-collections-list-2)

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

@@ -1,6 +1,6 @@
-=========
+## Core Java Collections List
 
-## Core Java Collections List Cookbooks and Examples
+This module contains articles about the Java List collection
 
 ### Relevant Articles: 
 - [Java – Get Random Item/Element From a List](http://www.baeldung.com/java-random-list-element)
@@ -12,3 +12,4 @@
 - [How to Find an Element in a List with Java](http://www.baeldung.com/find-list-element-java)
 - [Finding Max/Min of a List or Collection](http://www.baeldung.com/java-collection-min-max)
 - [Remove All Occurrences of a Specific Value from a List](https://www.baeldung.com/java-remove-value-from-list)
+- [[Next -->]](/core-java-modules/core-java-collections-list-2)

core-java-modules/core-java-collections-set/README.md

@@ -1,6 +1,6 @@
-=========
+## Core Java Collections Set
 
-## Core Java Sets Cookbooks and Examples
+This module contains articles about the Java Set collection
 
 ### Relevant Articles: 
 - [Set Operations in Java](http://www.baeldung.com/set-operations-in-java)

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

@@ -1,6 +1,6 @@
-=========
+## Core Java Collections
 
-## Core Java Collections Cookbooks and Examples
+This module contains articles about Java collections
 
 ### Relevant Articles: 
 - [Collect a Java Stream to an Immutable Collection](https://www.baeldung.com/java-stream-immutable-collection)
@@ -13,3 +13,4 @@
 - [Defining a Char Stack in Java](https://www.baeldung.com/java-char-stack)
 - [Guide to the Java Queue Interface](https://www.baeldung.com/java-queue)
 - [An Introduction to Synchronized Java Collections](https://www.baeldung.com/java-synchronized-collections)
+- [[More -->]](/core-java-modules/core-java-collections-2)

core-java-modules/core-java-concurrency-advanced/README.md

@@ -1,5 +1,3 @@
-=========
-
 ## Core Java Concurrency Advanced Examples
 
 This module contains articles about advanced topics about multithreading with core Java.
@@ -15,5 +13,4 @@ This module contains articles about advanced topics about multithreading with co
 - [An Introduction to Atomic Variables in Java](https://www.baeldung.com/java-atomic-variables)
 - [CyclicBarrier in Java](https://www.baeldung.com/java-cyclic-barrier)
 - [Guide to the Volatile Keyword in Java](https://www.baeldung.com/java-volatile)
-
+- More Articles: [[next -->]](/core-java-modules/core-java-concurrency-advanced-2)
-[[next -->]](/core-java-modules/core-java-concurrency-advanced-2)

core-java-modules/core-java-concurrency-basic/README.md

@@ -1,6 +1,6 @@
-=========
+## Core Java Concurrency Basic
 
-## Core Java Concurrency Basic Examples
+This module contains articles about basic Java concurrency
 
 ### Relevant Articles: 
 - [Guide To CompletableFuture](https://www.baeldung.com/java-completablefuture)
@@ -13,3 +13,4 @@
 - [Runnable vs. Callable in Java](https://www.baeldung.com/java-runnable-callable)
 - [What is Thread-Safety and How to Achieve it?](https://www.baeldung.com/java-thread-safety)
 - [How to Start a Thread in Java](https://www.baeldung.com/java-start-thread)
+- [[Next -->]](/core-java-modules/core-java-concurrency-basic-2)

core-java-modules/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/semaphore/SemaPhoreDemo.java

@@ -12,9 +12,11 @@ public class SemaPhoreDemo {
 		System.out.println("Number of threads waiting to acquire: " + semaphore.getQueueLength());
 
 		if (semaphore.tryAcquire()) {
-			semaphore.acquire();
+			try {		
 			// perform some critical operations
-			semaphore.release();
+			} finally {
+				semaphore.release();
+			}
 		}
 
 	}

core-java-modules/core-java-concurrency-collections/README.md

@@ -1,6 +1,6 @@
-=========
+## Core Java Concurrency Collections
 
-## Core Java Concurrency Collections Examples
+This module contains articles about concurrent Java collections
 
 ### Relevant Articles: 
 - [Guide to java.util.concurrent.BlockingQueue](http://www.baeldung.com/java-blocking-queue)

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

@@ -1,8 +1,13 @@
-## Relevant Articles:
+## Core Java Exceptions
 
-- [Will an Error Be Caught by Catch Block in Java?](https://www.baeldung.com/java-error-catch)
+This module contains articles about core java exceptions
-- [Java Global Exception Handler](http://www.baeldung.com/java-global-exception-handler)
+
-- [Common Java Exceptions](http://www.baeldung.com/java-common-exceptions)
+### Relevant articles:
-- [Throw Exception in Optional in Java 8](https://www.baeldung.com/java-optional-throw-exception)
+- [Chained Exceptions in Java](https://www.baeldung.com/java-chained-exceptions)
-- [How to Find an Exception’s Root Cause in Java](https://www.baeldung.com/java-exception-root-cause)
+- [ClassNotFoundException vs NoClassDefFoundError](https://www.baeldung.com/java-classnotfoundexception-and-noclassdeffounderror)
-- [Java – Try with Resources](https://www.baeldung.com/java-try-with-resources)
+- [Create a Custom Exception in Java](https://www.baeldung.com/java-new-custom-exception)
+- [Exception Handling in Java](https://www.baeldung.com/java-exceptions)
+- [Differences Between Final, Finally and Finalize in Java](https://www.baeldung.com/java-final-finally-finalize)
+- [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)