Fazle Rabbi vs 1

/*Project matrix calculator sub method.
Auther: Fazle Rabbi
All Rights Recived @ 2015*/

import java.util.Scanner;
public class FazleRabbi{
  public static void main(String args[]){
  Scanner sc= new Scanner(System.in);
    System.out.println("Enter First Matrix Row");
    int r1=sc.nextInt();
   System.out.println("Enter First Matrix Column");
    int c1=sc.nextInt();
  System.out.println("Enter Second Matrix Row");
    int r2=sc.nextInt();
  System.out.println("Enter Second Matrix Column");
    int c2=sc.nextInt();    
    
    
  int m1[][]= new int[r1][c1];
  int m2[][]= new int [r2][c2];
  for(int i=0;i<r1;i++){
    for(int j=0;j<c1;j++){
  System.out.println("Enter first array possition "+"["+i+"] "+"["+j+"]");
  m1[i][j]=sc.nextInt();
  }
  }
  for(int i1=0;i1<r1;i1++){
    for(int j1=0;j1<c1;j1++){
  System.out.println("Enter second array possition "+"["+i1+"] "+"["+j1+"]");
      m2[i1][j1]=sc.nextInt();
  }
  }
  int output[][]= new int [r1][c2];
  output=Add(m1,m2);
  for(int i4=0;i4<r1;i4++){
    for(int j4=0;j4<c1;j4++){
  System.out.print(output[i4][j4]+"  ");
  }
    System.out.println();
  }
  }
 
  //the sub method code goes here.
public static int [][] Sub(int matrix1[][],int matrix2[][]){
    int a= matrix1.length;
    int b=matrix2[0].length;
    int [][] m3=new int [a][b];
  for(int i3=0;i3<a;i3++){
    for(int j3=0;j3<b;j3++){
  m3[i3][j3]=matrix1[i3][j3]-matrix2[i3][j3];
  }
  }
  return m3;
}
}