BalancedMatrix.java

import java.util.InputMismatchException;
import java.util.Scanner;

public class BalancedMatrix {

    public static void main(String args[])
    {
        int ROW = 3;
        int COL = 3;
        int[][] intArr = new int[ROW][COL];
        try (Scanner input = new Scanner(System.in)) {
        System.out.println("Enter positive integer for "+ ROW + " X " + COL +" matrix: ");
        for (int i=0; i< ROW ; i++)
        {
            for (int j=0; j < COL; j++)
            {
                System.out.print("Enter the ["+ i +"] ["+j+"] value: ");
                intArr[i][j] = input.nextInt();
            }
        }
            
        System.out.println("Integers in the matrix are: ");

        int sumFirstRow =0;
        int sumFirstCol=0;
        int sumDia=0;
        for (int k=0; k < ROW; k++)
        {
            for (int j=0; j < COL; j++)
            {
                System.out.print(intArr[k][j]+ " ");
                if (k == 0) sumFirstRow= sumFirstRow + intArr[k][j]; // first row
                if (j == 0) sumFirstCol= sumFirstCol + intArr[k][j]; // first column
                if (k == j) sumDia = sumDia + intArr[k][j]; // diagonal element
            }
            System.out.println();
        }
        System.out.println("The sum of first row elements is: "+ sumFirstRow);
        System.out.println("The sum of first col elements is: "+ sumFirstCol);
        System.out.println("The sum of major diagonal elements is: "+ sumDia);
        
        if ((sumFirstRow == 0) && (sumFirstCol == 0) && (sumDia == 0))
            System.out.print("It is a Balanced Matrix");
        else
            System.out.print("It is NOT a Balanced Matrix");
        
        } catch (InputMismatchException  e)
         {
            System.out.println("Error reading input");
         }
        }// end of main
}