Question

Write a class program with the following specifications:

Class name: Matrix
Data Members : int array m[][] with 3 rows and 3 columns
Member Methods:
void getdata(): to accept the numbers in the array
void rowsum(): to find and print the sum of the numbers of each row
void colsum(): to find and print the sum of numbers of each column

Use a main function to create an object and call member methods of the class.

Answer 1

import java.util.*;
class Matrix
{Scanner ob = new Scanner(System.in);
int i, j, rowsum = 0, colsum = 0;
int m[][] = new int[3][3];

// INPUT LOOP
void getdata()
{System.out.println("Enter the numbers of the matrix");
for (i = 0; i < 3; i++)
{for (j = 0; j < 3; j++)
m[i][j] = ob.nextInt();
}}

// ROW WISE TOTAL 
void rowsum()
{System.out.println("The numbers of the matrix are");
for (i = 0; i < 3; i++)
{rowsum = 0;
for (j = 0; i < 3; j++)
{System.out.print(m[i][j] + "\t");
rowsum += m[i][j];
}
System.out.print("Row wise total " + (i + 1) + " is " + rowsum);
System.out.println(); 
}}

// COLUMN WISE TOTAL
void colsum()
{for (i = 0; i < 3; i++)
{colsum = 0;
for (j = 0; j < 3; j++)
colsum += m[j][i];
System.out.println("Column wise total " + (i + 1) + " is " + colsum):
}}

public static void main(String args[])
{
Matrix obj = new Matrix();
obj.getdata():
obj.rowsum();
obj.colsum();
}}