用java编写写出一个方法，计算两个矩阵的乘积。

可以使用以下Java代码来计算两个矩阵的乘积：

public class MatrixMultiplication {
    public static int[][] multiply(int[][] matrixA, int[][] matrixB) {
        int rowsA = matrixA.length;
        int colsA = matrixA[0].length;
        int colsB = matrixB[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] += matrixA[i][k] * matrixB[k][j];
                }
            }
        }
        
        return result;
    }

    public static void main(String[] args) {
        int[][] matrixA = {{1, 2, 3}, {4, 5, 6}};
        int[][] matrixB = {{7, 8}, {9, 10}, {11, 12}};

        int[][] result = multiply(matrixA, matrixB);
        
        for (int i = 0; i < result.length; i++) {
            for (int j = 0; j < result[0].length; j++) {
                System.out.print(result[i][j] + " ");
            }
            System.out.println();
        }
    }
}