Define a class to accept values into 4x4 array and find and display the sum of each row.

sum of row 1 = 10 (1+2+3+4)
sum of row 2 = 26 (5+6+7+8)
sum of row 3 = 16 (1+3+5+7)
sum of row 4 = 11 (2+5+3+1)

import java.util.Scanner;

public class KboatDDARowSum
{
    public static void main(String args[]) {
        Scanner in = new Scanner(System.in);
        int arr[][] = new int[4][4];

        System.out.println("Enter 4x4 DDA elements:");
        for (int i = 0; i < 4; i++) {
            for (int j = 0; j < 4; j++) {
                arr[i][j] = in.nextInt();
            }
        }

        for (int i = 0; i < 4; i++) {
            int rowSum = 0;
            for (int j = 0; j < 4; j++) {
                rowSum += arr[i][j];
            }
            System.out.println("Sum of Row" + (i+1) 
                                + " = " + rowSum);
        }
    }
}