How to compare two arrays

import java.util.Arrays;

public class Main {
   public static void main(String[] args) throws Exception {
      int[] ary1 = {1,2,3,4,5,6};
      int[] ary2 = {1,2,3,4,5,6};
      int[] ary3 = {1,2,3,4};
      System.out.println("Is array 1 equal to array 2?? "
      +Arrays.equals(ary, ary1));
      System.out.println("Is array 1 equal to array 3?? "
      +Arrays.equals(ary, ary2));
  }
}

output:

Is array 1 equal to array 2?? true
Is array 1 equal to array 3?? false