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The output of the preceding program is as follows:
BlueJ: Terminal Window - Java
Options
Enter a number: 4
Enter a number: 7
Enter a number: 2
Enter a number: 6
Enter a number: 3
Enter a number: 9
Enter a number: 8
Enter a number: 5
Enter a number: 10
Sum of Numbers: 24
Using Direct Input Method
In this method, the values to be inserted are taken in as parameters by the user.
Program 20 Write a Java program to create an array of size 4 × 4, take values using parameter and display
the diagonals and also display the sum of numbers present in the diagonal position.
1 import java.util.Scanner;
2 public class DiagonalSum
3 {
4 public static void main(int[][] arr)
5 {
6 int mainDiagonalSum = 0;
7 int secondaryDiagonalSum = 0;
8 System.out.println("Main Diagonal:");
9 for (int i = 0; i < 4; i++)
10 {
11 mainDiagonalSum += arr[i][i];
12 }
13 System.out.println("\nSum of Main Diagonal: " + mainDiagonalSum);
14 System.out.println("\nSecondary Diagonal:");
15 for (int i = 0; i < 4; i++)
Arrays 357
