Java program to find all pairs of elements in an integer array

Java program to find all pairs of elements in an integer array whose sum is equal to a given number.

/*
 *@ CopyRight : 2016
 *@ Author       : RAJEEVKUMAR
 *@ Date      : 16-Mar-2018
 *@ File Name : PairOfArray.java
 *@ Package   : codding.time
 *
 */
package codding.time;

public class PairOfArray {
    public static void main(String args[]) {
        int a[] = { 4, 5, 6, 7, 2, 3, 4, 5, 6, 7 };
        int sum = 10;
        for (int i = 0; i < a.length; i++) {
            for (int j = i + 1; j < a.length; j++) {
                if (a[i] + a[j] == sum) {
                    System.out.println(a[i] + " " + a[j] + " = " + sum);
                }
            }
        }
    }
}