Addition of Two matrix

we are going to calculate the sum of two matrix and containing its rows and columns. See below for better understanding to this: 

In this program we are going to calculate the sum of two matrix. To make this program, we need to declare two dimensional array of type integer.
Now we need to make a matrix out of it. To make the matrix we will use the for loop. By making use of the for loop the rows and column will get divide. This process will be performed again for creating the second matrix. After getting both the matrix with us, we need to sum both the matrix. The both matrix will be added by using the for loop with C[r][c]= A[r][c]+B[r][c]. The output will be displayed by using the print() method.

public class addMatrix{

      int A[][];

      int B[][];

      int C[][];

      int row;

      int column;

public addMatrix(int r,int c){

row=r;

column=c;

      A=new int[r][c];

      B=new int[r][c];

      C=new int[r][c];

for(int i=0;i<r;i++){

    for(int j=0;j<c;j++){

A[i][j]=(int) Math.round(Math.random()*99+10);

B[i][j]=(int) Math.round(Math.random()*70+10);

}

}

}

public void addition(){

for(int i=0;i<row;i++){

   for(int j=0;j<column;j++){

C[i][j]=A[i][j]+B[i][j];

}

}

}

public void display(){

for(int i=0;i<row;i++){

  for(int j=0;j<column;j++){

System.out.print(C[i][j]+"\t");

}

System.out.println();

}

}

public static void main(String args[]){

addMatrix m=new addMatrix(4,5);

m.addition();

m.display();

}

}

Output is:

C:\Users\Hari\Desktop\java>java addMatrix

134     88      115     87      161

65      188     52      166     98

86      83      43      106     93

62      104     100     49      159

similarly substraction as given

Subtraction of two matrix in java

we are going to calculate the subtraction of two matrix and containing its rows and columns. See below for better understanding to this: 

In this program we are going to calculate the  subtraction  of two matrix. To make this program, we need to declare two dimensional array of type integer. Now we need to make a matrix out of it. To make the matrix we will use the for loop.
By making use of the for loop the rows and column will get divide. This process will be performed again for creating the second matrix. After getting both the matrix with us, we need to subtraction  both the matrix. The both matrix will be subtracted by using the for loop with C[r][c]= A[r][c]-B[r][c]. The output will be displayed by using the print() method.