BAEL-3418 Check If Two Strings Are Anagrams in Java (#8139)

* BAEL-3418 Check If Two Strings Are Anagrams in Java

* BAEL-3418 Update code based on code review feedback.

* BAEL-3418 Update comments and rename constant based on code review feedback.

* Move the repository to core-java-modules/core-java-string-algorithms-3/

* BAEL-3418 Only support alpha characters for the anagram

* BAEL-3418 use preprocess in a separate method

* BAEL-3418 Remove the temp variables

core-java-modules/core-java-string-algorithms-3/pom.xml

@@ -0,0 +1,69 @@
+<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-algorithms-3</artifactId>
+	<version>0.1.0-SNAPSHOT</version>
+	<packaging>jar</packaging>
+	<name>core-java-string-algorithms-3</name>
+
+	<parent>
+		<groupId>com.baeldung</groupId>
+		<artifactId>parent-java</artifactId>
+		<version>0.0.1-SNAPSHOT</version>
+		<relativePath>../../parent-java</relativePath>
+	</parent>
+
+	<dependencies>
+		<!-- test scoped -->
+		<dependency>
+			<groupId>org.assertj</groupId>
+			<artifactId>assertj-core</artifactId>
+			<version>${assertj.version}</version>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>com.google.guava</groupId>
+			<artifactId>guava</artifactId>
+			<version>28.1-jre</version>
+		</dependency>
+
+		<dependency>
+			<groupId>org.junit.jupiter</groupId>
+			<artifactId>junit-jupiter-api</artifactId>
+			<version>${junit-jupiter-api.version}</version>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<finalName>core-java-string-algorithms-3</finalName>
+		<resources>
+			<resource>
+				<directory>src/main/resources</directory>
+				<filtering>true</filtering>
+			</resource>
+		</resources>
+		
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>${maven-compiler-plugin.version}</version>
+                <configuration>
+                    <source>${java.version}</source>
+                    <target>${java.version}</target>
+                    <compilerArgument>-parameters</compilerArgument>
+                </configuration>
+            </plugin>
+        </plugins>
+	</build>
+
+	<properties>
+		<commons-lang3.version>3.8.1</commons-lang3.version>
+		<assertj.version>3.6.1</assertj.version>
+		<guava.version>27.0.1-jre</guava.version>
+		<junit-jupiter-api.version>5.3.1</junit-jupiter-api.version>
+	</properties>
+
+</project>