Matrix.java

public class Matrix {
    public static void main(String[] args) {
        int[][] matrix1 = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};
        int[][] matrix2 = {{9, 8, 7}, {6, 5, 4}, {3, 2, 1}};

        int rows = matrix1.length;
        int cols = matrix1[0].length;
        int[][] result = new int[rows][cols];

        // Multiply matrices
        for (int i = 0; i < rows; i++) {
            for (int j = 0; j < cols; j++) {
                for (int k = 0; k < cols; k++) {
                    result[i][j] += matrix1[i][k] * matrix2[k][j];
                }
            }
        }

        // Print result
        System.out.println("Result of matrix multiplication:");
        for (int[] row : result) {
            for (int num : row) {
                System.out.print(num + " ");
            }
            System.out.println();
        }

        // Matrix Addition
        int[][] sum = new int[rows][cols];
        for (int i = 0; i < rows; i++) {
            for (int j = 0; j < cols; j++) {
                sum[i][j] = matrix1[i][j] + matrix2[i][j];
            }
        }

        System.out.println("\nResult of matrix addition:");
        for (int[] row : sum) {
            for (int num : row) {
                System.out.print(num + " ");
            }
            System.out.println();
        }
    }
}