السؤال كآلتآلي ..ْ~
3. Matrix Class – Code a class to manage matrices of integers and includes method to add them and another one to subtract them. Create in the driver class two objects of it and let the user to choose the operation he/she wants to perform on them.
و ال////////////////Main ///////////////////
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package matriix;
import java.util.*;
/
*
* @author TOSHIBA
*/
public class Main {
/
* @param args the command line arguments
*/
public static void main(String[] args) {
Matrix f1 = new Matrix();
Matrix f2 = new Matrix();
int [][] m1=new int [3][3];
int [][] m2=new int [3][3];
Scanner s=new Scanner(System.in);
System.out.println("Enter the number of the first matrix:");
for (int i=0;i<m1.length;i++){
for (int j=0;j<m1.length;j++){
m1[i][j]=s.nextInt();
System.out.println(m1+" ");
}
}
System.out.println("Enter the number of the second matrix:");
for (int i=0;i<m2.length;i++){
for (int j=0;j<m2.length;j++){
m2[i][j]=s.nextInt();
System.out.println(m2+" ");
}
}
System.out.println("Please select the operation:");
System.out.println("1- Add\n2- Subtract ");
int choice=s.nextInt();
switch (choice){
case 1:
f1.add(m1, m2);
break;
case 2:
f2.sub(m1, m2);
break;
}
}
}
////////////////////////////// The Class//////////////////
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package matriix;
import java.util.Scanner;
/
*
* @author TOSHIBA
*/
public class Matrix {
int [][]sum=new int [3][3];
int [][]sub=new int [3][3];
int [][] m1=new int [3][3];
int [][] m2=new int [3][3];
Scanner s= new Scanner(System.in);
public void add(int [][]m1,int [][]m2){
System.out.println("The sum of two matrices is:");
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
sum[i][j] = m1[i][j] + m2[i][j];
System.out.print(sum[i][j] + " ");
}}}
public void sub(int [][]m1,int [][]m2){
System.out.println("The subtract of two matrices is:");
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
sub[i][j] = m1[i][j] - m2[i][j];
System.out.print(sub[i][j] + " ");
}
}
}
}
[COLOR="rgb(139, 0, 0)"]الكود أشتغل بس في الرن يطلع رموز غريبة مع الأرقام :( 
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