From d42d817ac3e47bbdead79c828c24b9e68e86010c Mon Sep 17 00:00:00 2001
From: Jordan Simpson <jordan.simpson.dev@gmail.com>
Date: Thu, 25 Jun 2020 15:16:48 -0500
Subject: [PATCH] Added code examples for BAEL-4300 article.

---
 core-java-modules/core-java-lang-3/.gitignore | 25 +++++++++++++
 core-java-modules/core-java-lang-3/README.md  |  6 +++
 core-java-modules/core-java-lang-3/pom.xml    | 37 +++++++++++++++++++
 .../StringToBooleanUnitTest.java              | 29 +++++++++++++++
 core-java-modules/pom.xml                     |  1 +
 5 files changed, 98 insertions(+)
 create mode 100644 core-java-modules/core-java-lang-3/.gitignore
 create mode 100644 core-java-modules/core-java-lang-3/README.md
 create mode 100644 core-java-modules/core-java-lang-3/pom.xml
 create mode 100644 core-java-modules/core-java-lang-3/src/test/java/com/baeldung/stringtoboolean/StringToBooleanUnitTest.java

diff --git a/core-java-modules/core-java-lang-3/.gitignore b/core-java-modules/core-java-lang-3/.gitignore
new file mode 100644
index 0000000000..374c8bf907
--- /dev/null
+++ b/core-java-modules/core-java-lang-3/.gitignore
@@ -0,0 +1,25 @@
+*.class
+
+0.*
+
+#folders#
+/target
+/neoDb*
+/data
+/src/main/webapp/WEB-INF/classes
+*/META-INF/*
+.resourceCache
+
+# Packaged files #
+*.jar
+*.war
+*.ear
+
+# Files generated by integration tests
+backup-pom.xml
+/bin/
+/temp
+
+#IntelliJ specific
+.idea/
+*.iml
\ No newline at end of file
diff --git a/core-java-modules/core-java-lang-3/README.md b/core-java-modules/core-java-lang-3/README.md
new file mode 100644
index 0000000000..a7f9bc01a2
--- /dev/null
+++ b/core-java-modules/core-java-lang-3/README.md
@@ -0,0 +1,6 @@
+## Core Java Lang (Part 3)
+
+This module contains articles about core features in the Java language
+
+### Relevant Articles: 
+- [[<-- Prev]](/core-java-modules/core-java-lang-2)
diff --git a/core-java-modules/core-java-lang-3/pom.xml b/core-java-modules/core-java-lang-3/pom.xml
new file mode 100644
index 0000000000..84e40282ec
--- /dev/null
+++ b/core-java-modules/core-java-lang-3/pom.xml
@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<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">
+    <parent>
+        <groupId>com.baeldung.core-java-modules</groupId>
+        <artifactId>core-java-modules</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../</relativePath>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>core-java-lang-3</artifactId>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+            <version>${assertj.version}</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <finalName>core-java-lang-3</finalName>
+        <resources>
+            <resource>
+                <directory>src/main/resources</directory>
+                <filtering>true</filtering>
+            </resource>
+        </resources>
+    </build>
+
+    <properties>
+        <assertj.version>3.12.2</assertj.version>
+    </properties>
+</project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-lang-3/src/test/java/com/baeldung/stringtoboolean/StringToBooleanUnitTest.java b/core-java-modules/core-java-lang-3/src/test/java/com/baeldung/stringtoboolean/StringToBooleanUnitTest.java
new file mode 100644
index 0000000000..f87fad1c01
--- /dev/null
+++ b/core-java-modules/core-java-lang-3/src/test/java/com/baeldung/stringtoboolean/StringToBooleanUnitTest.java
@@ -0,0 +1,29 @@
+package com.baeldung.stringtoboolean;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import org.junit.Test;
+
+public class StringToBooleanUnitTest
+{
+    @Test
+    public void givenStringTrue_whenUsingParseBoolean_thenTrue() {
+        assertThat(Boolean.parseBoolean("true")).isTrue();
+    }
+
+    @Test
+    public void givenStringTrue_whenUsingValueOf_thenTrue() {
+        assertThat(Boolean.valueOf("true")).isTrue();
+    }
+
+    @Test
+    public void givenStringTrue_whenUsingGetBoolean_thenFalse() {
+        assertThat(Boolean.getBoolean("true")).isFalse();
+    }
+
+    @Test
+    public void givenSystemProperty_whenUsingGetBoolean_thenTrue() {
+        System.setProperty("CODING_IS_FUN", "true");
+        assertThat(Boolean.getBoolean("CODING_IS_FUN")).isTrue();
+    }
+}
diff --git a/core-java-modules/pom.xml b/core-java-modules/pom.xml
index 26c374b51d..3bbd51bf65 100644
--- a/core-java-modules/pom.xml
+++ b/core-java-modules/pom.xml
@@ -131,6 +131,7 @@
 
         <!-- <module>multimodulemavenproject</module> --> <!-- We haven't upgraded to java 9. Fixing in BAEL-10841 -->
         <module>pre-jpms</module>
+        <module>core-java-lang-3</module>
     </modules>
 
     <build>