Java program to check anagram string

.Write a Java Programming Code to Check given string Anagram or Not. If the two strings are anagram to each other, then one string can be rearranged to form the other string.

For Example, care and race is an anagram to each other.

import java.util.Scanner;

class JavaProgram {
    public static void main(String[] input) {

        // declare variables
        String str1, str2;
        int len, len1, len2, i, j, flag = 0;

        // Scanner class object to read input values
        Scanner scan = new Scanner(System.in);

        // read two strings from user
        System.out.print("Enter First String : ");
        str1 = scan.nextLine();
        System.out.print("Enter Second String : ");
        str2 = scan.nextLine();

        len1 = str1.length();
        len2 = str2.length();

        // if two strings are of same length
        // check if the strings are anagram to each other
        if (len1 == len2) {
            len = len1;
            for (i = 0; i < len; i++) {
                flag = 0;
                for (j = 0; j < len; j++) {
                    // set flag = 1 and break from loop, if i-th charcter in first string
                    // is found in second string
                    if (str1.charAt(i) == str2.charAt(j)) {
                        flag = 1;
                        break;
                    }
                }
                // flag = 0, it indicates that some character in first string 
                // is not present in second string
                if (flag == 0) {
                    break;
                }
            }
            if (flag == 0) {
                System.out.print("Strings are not Anagram to Each Other..!!");
            } else {
                System.out.print("Strings are Anagram");
            }
        } else {
            System.out.print("Both Strings Must have the same number of Character to be an Anagram");
        }
    }
}

Output

Enter First String : keep
Enter Second String : peek
Strings are Anagram