Duplicate String in java

duplicate_element.java

package com.manjay;

public class duplicate_element {
    public static void main(String[] args) {

       // String arr = new String[]{ } ;
        String[] arr = new String[]{"b","a","a","a"};

        System.out.println("Duplicate elements in given array: ");
        //Searches for duplicate element
        for (int i = 0; i < arr.length; i++) {
            for (int j = i + 1; j < arr.length; j++) {
                if (arr[i].equals(arr[j])) {
                    System.out.print(arr[j] + " ");
                }
            }
        }
    }

}