java中的乘法矩阵

我写了两个矩阵相乘的代码，但是如何在主函数中给它参数呢

public static int [][] multiply(int[][] a, int[][] b){

    int[][] p = new int [a.length][a[0].length];
    for (int i = 0; i < a.length; i++)
        for (int j = 0; j < a[0].length; j++) {
            p[i][j] = 0;
            for (int k = 0; k < a[0].length; k++)
            p[i][j] += a[i][k] * b[k][j];
        }
    return p;
}

public static int[][]multiply（int[]a，int[]b）{
int[][]p=新的int[a.length][a[0].length]；
for（int i=0；i

main函数中的参数是什么意思？我不知道如何运行它。我需要给它a和b的整数吗？

int[][] a = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};
int[][] b = {{9, 8, 7}, {6, 5, 4}, {3, 2, 1}};

int[][] c = MatrixClass.multiply(a, b); // your multiplied array coming from your MatrixClass

int[][] c = multiply(  new int[][]{
                                 {1, 2, 3},
                                 {4, 5, 6},
                                 {7, 8, 9}
                       },
                       new int[][]{
                                 {9, 8, 7},
                                 {6, 5, 4},
                                 {3, 2, 1}
                       });