String Anagram

package com.javafries.string.anagram;

 

import java.util.Arrays;

 

public class AnagramChecker {

 

    private static boolean isAnagram(String str1, String str2) {

 

        // If string lengths are not same, the strings are not anagrams.

        if (str1.length() != str2.length()) {

            return false;

        }

 

        // Sort characters of both the strings.

        str1 = sortCharacters(str1);

        str2 = sortCharacters(str2);

 

        // After sorting if strings are equal then they are anagrams.

        if (str1.equals(str2)) {

            return true;

        }

        return false;

    }

 

    private static String sortCharacters(String str) {

        char[] charArray = str.toLowerCase().toCharArray();

        Arrays.sort(charArray);

        return String.valueOf(charArray);

    }

 

    public static void main(String[] args) {

        String str1 = "Robin";

        String str2 = "binro";

        if (isAnagram(str1, str2)) {

            System.out.println(str2 + " is anagram of " + str1);

        } else {

            System.out.println("Strings are not anagrams.");

        }

    }

}