### Matrix addition

This program show how to add two matrices A & B into a third matrix C. Here the matrix having 3 rows and 3 columns (3x3). As given below,

**inputMatrix( )**and**displayMatrix( )**are two static methods which are used to read and display the matrix values respectively.**java.util.Scanner**class is used to read values from keyboard at runtime.**PROGRAM**```
import java.util.Scanner;
class MatrixAddition {
public static void inputMatrix(int temp[][]) {
Scanner s = new Scanner(System.in);
for(int i=0;i<3; i++) {
for(int j=0; j<3; j++) {
temp[i][j] = s.nextInt();
}
}
}
public static void displayMatrix(int temp[][]) {
for(int i=0;i<3; i++) {
for(int j=0; j<3; j++) {
System.out.print(temp[i][j] + " ");
}
System.out.println("");
}
}
public static void main(String[] args) {
int a[][] = new int[3][3]; // First matrix
int b[][] = new int[3][3]; // Second matrix
int c[][] = new int[3][3]; // Final matrix which is to store addition
// Input Matrix A elements
System.out.println("Enter the 9 numbers for first matrix (3x3)...");
inputMatrix(a);
// Input Matrix B elements
System.out.println("Enter the 9 numbers for second matrix (3x3)...");
inputMatrix(b);
// Addition logic goes here
for(int x=0; x<3; x++) {
for(int y=0; y<3; y++) {
c[x][y] = a[x][y] + b[x][y];
}
}
System.out.println("Matrix A is ...");
displayMatrix(a);
System.out.println("Matrix B is ...");
displayMatrix(b);
System.out.println("After addition Matrix C is ...");
displayMatrix(c);
}
}
```

**OUTPUT**C:\>javac MatrixAddition.java C:\>java MatrixAddition Enter the 9 numbers for first matrix (3x3)... 1 2 3 4 5 6 7 8 9 Enter the 9 numbers for second matrix (3x3)... 1 2 3 4 5 6 7 8 9 Matrix A is ... 1 2 3 4 5 6 7 8 9 Matrix B is ... 1 2 3 4 5 6 7 8 9 After addition Matrix C is ... 2 4 6 8 10 12 14 16 18