MatrixMultiplication.java

public class MatrixMultiplication {
    public static void main(String[] args) {
        int[][] matrixA = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};
        int[][] matrixB = {{9, 8, 7}, {6, 5, 4}, {3, 2, 1}};
        int[][] result = multiplyMatrices(matrixA, matrixB);

        // Displaying the result
        for (int i = 0; i < result.length; i++) {
            for (int j = 0; j < result[i].length; j++) {
                System.out.print(result[i][j] + " ");
            }
            System.out.println();
        }
    }

    static int[][] multiplyMatrices(int[][] a, int[][] b) {
        int rowsA = a.length;
        int colsA = a[0].length;
        int colsB = b[0].length;

        int[][] result = new int[rowsA][colsB];

        for (int i = 0; i < rowsA; i++) {
            for (int j = 0; j < colsB; j++) {
                for (int k = 0; k < colsA; k++) {
                    result[i][j] += a[i][k] * b[k][j];
                }
            }
        }

        return result;
    }
}