Anagrams and Pallindrome in JAVA

A program to check if two strings are Anagrams and Pallindrome in JAVA

E.g
"Dormitory-Dirty Room"-> Anagram ,Not Pallindrome
"Madam-madam" -> Anagram, Pallindrome 
" School Master- The Classroom"-> Anagram, Not Pallindrome

package com.anagram; 

import java.util.Arrays;
import java.util.Scanner;

/**
 *
 * @author anuz
 */
public class Program {

    public static void main(String[] args) {
        String firstString, secondString;

        boolean isAnagram = false;

        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter a String:");
        firstString = scanner.nextLine().toLowerCase().trim();
        System.out.print("Enter another number:");
        secondString = scanner.nextLine().toLowerCase().trim();

        //check if two strings are anagram
        if (checkAnagram(firstString, secondString)) {
            System.out.println("Anagram");

            //to check if two strings are pallindrome
              StringBuilder sb = new StringBuilder(secondString);
              if (firstString.equalsIgnoreCase(sb.reverse().toString())) {
                  System.out.println("Pallindrome");
       
              }else{
                  System.out.println("Not Pallindrome");
              }


        } else {
            System.out.println("Not Anagram");
        }

     
       

    }

    private static boolean checkAnagram(String firstString, String secondString) {

        //filter string-> remove whitespace and special characters
        //replace all characters except a-z alphabets and digits with an empty string
   
        firstString = firstString.replaceAll("[^a-zA-Z0-9]", "").trim();
        secondString = secondString.replaceAll("[^a-zA-Z0-9]", "").trim();

        if (firstString.length() == secondString.length()) {
            char[] charArrayOfFirstString = firstString.toCharArray();
            char[] charArrayOfSecondString = secondString.toCharArray();
       
           //check if both sorted arrayofchar are equal
            Arrays.sort(charArrayOfFirstString);
            Arrays.sort(charArrayOfSecondString);
            return Arrays.equals(charArrayOfFirstString, charArrayOfSecondString);
        } else {
            return false;
        }
    }

}



OUTPUT:
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