BAEL-4301

- Created a new module core-java-char in core-java-modules modules
- Added Unit Tests for Character#isAlphabetic and Character#isLetter methods

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

@@ -0,0 +1,6 @@
+## Core Java Character
+
+This module contains articles about Java Character Class
+
+### Relevant Articles: 
+- Character#isAlphabetic vs Character#isLetter

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

@@ -0,0 +1,42 @@
+<?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">
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>core-java-char</artifactId>
+    <version>0.1.0-SNAPSHOT</version>
+    <name>core-java-char</name>
+    <packaging>jar</packaging>
+    <parent>
+        <groupId>com.baeldung.core-java-modules</groupId>
+        <artifactId>core-java-modules</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../</relativePath>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+            <version>${assertj.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.openjdk.jmh</groupId>
+            <artifactId>jmh-core</artifactId>
+            <version>${openjdk.jmh.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.openjdk.jmh</groupId>
+            <artifactId>jmh-generator-annprocess</artifactId>
+            <version>${openjdk.jmh.version}</version>
+        </dependency>
+    </dependencies>
+
+    <properties>
+        <openjdk.jmh.version>1.19</openjdk.jmh.version>
+        <assertj.version>3.11.1</assertj.version>
+    </properties>
+
+</project>

core-java-modules/core-java-char/src/test/java/com/baeldung/character/CharacterGeneralCategoryTypeUnitTest.java

@@ -0,0 +1,37 @@
+package com.baeldung.character;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertTrue;
+
+public class CharacterGeneralCategoryTypeUnitTest {
+    @Test
+    public void givenACharacter_whenUpperCaseLetter_thenAssertTrue() {
+        assertTrue(Character.getType('U') == Character.UPPERCASE_LETTER);
+    }
+
+    @Test
+    public void givenACharacter_whenLowerCaseLetter_thenAssertTrue() {
+        assertTrue(Character.getType('u') == Character.LOWERCASE_LETTER);
+    }
+
+    @Test
+    public void givenACharacter_whenTitleCaseLetter_thenAssertTrue() {
+        assertTrue(Character.getType('\u01f2') == Character.TITLECASE_LETTER);
+    }
+
+    @Test
+    public void givenACharacter_whenModifierLetter_thenAssertTrue() {
+        assertTrue(Character.getType('\u02b0') == Character.MODIFIER_LETTER);
+    }
+
+    @Test
+    public void givenACharacter_whenOtherLetter_thenAssertTrue() {
+        assertTrue(Character.getType('\u05d0') == Character.OTHER_LETTER);
+    }
+
+    @Test
+    public void givenACharacter_whenLetterNumber_thenAssertTrue() {
+        assertTrue(Character.getType('\u2164') == Character.LETTER_NUMBER);
+    }
+}

core-java-modules/core-java-char/src/test/java/com/baeldung/character/IsLetterOrAlphabetUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.java14.character;
+package com.baeldung.character;
 
 import org.junit.Test;
 
@@ -6,25 +6,23 @@ import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.assertFalse;
 
 public class IsLetterOrAlphabetUnitTest {
-
     @Test
     public void givenACharacter_whenLetter_thenAssertIsLetterTrue() {
-        assertTrue(Character.isLetter(65));
+        assertTrue(Character.isLetter('a'));
     }
 
     @Test
     public void givenACharacter_whenLetter_thenAssertIsAlphabeticTrue() {
-        assertTrue(Character.isAlphabetic(65));
+        assertTrue(Character.isAlphabetic('a'));
     }
 
     @Test
     public void givenACharacter_whenAlphabeticAndNotLetter_thenAssertIsLetterFalse() {
-        assertFalse(Character.isLetter(837));
+        assertFalse(Character.isLetter('\u2164'));
     }
 
     @Test
     public void givenACharacter_whenAlphabeticAndNotLetter_thenAssertIsAlphabeticTrue() {
-        assertTrue(Character.isAlphabetic(837));
+        assertTrue(Character.isAlphabetic('\u2164'));
     }
-
-}
+}

core-java-modules/pom.xml

@@ -29,7 +29,8 @@
         <module>core-java-arrays-convert</module>
         <module>core-java-arrays-operations-basic</module>
         <module>core-java-arrays-operations-advanced</module>
-        
+
+        <module>core-java-char</module>
         <module>core-java-collections</module>
         <module>core-java-collections-2</module>
         <module>core-java-collections-3</module>