Write a program in java to input a 2D matrix and check it whether it is scalar or not. The matrix is : 5 0 0 0 0 5 0 0 0 0 5 0 0 0 0 5

Write a program in java to input a 2D matrix and check it whether it is scalar or not. The matrix is : 

5 0 0 0

0 5 0 0 

0 0 5 0 

0 0 0 5

Answers:

import java.io.*;

class Scalar

{

 public static void main(String args[])

 throws IOException

{

 InputStreamReader in = new InputStreamReader(System.in);

 BufferedReader br = new BufferedReader(in);

 System.out.print("Dimension: ");

 int n = Integer.parseInt(br.readLine());

 int m[][] = new int[n][n];

 System.out.println("Enter matrix elements:");

 for(int i = 0; i < n; i++)

{

 for(int j = 0; j < n; j++)

{

 m[i][j] = Integer.parseInt(br.readLine());

 }

 }

 boolean status = true;

 int value = m[0][0];

 for(int i = 1; i < n; i++)

{

 if(value != m[i][i])

{

 status = false;

 break;

 }

 }

 if(status)

 System.out.println("The matrix is scalar.");

 else

 System.out.println("The matrix is not scalar.");

 }

}

Output: