题目：打印出如下图案（菱形） * *** ****** ******** ****** *** *

以下是Java语言实现打印菱形的代码：

public class Main {
    public static void main(String[] args) {
        print();
    }

    public static void print() {
        for (int i = 0; i < 4; i++) {
            for (int j = 3 - i; j > 0; j--) {
                System.out.print(" ");
            }
            for (int k = 0; k <= 2 * i; k++) {
                System.out.print("*");
            }
            System.out.println();
        }
        for (int x = 3; x > 0; x--) {
            for (int y = 3 - x + 1; y > 0; y--) {
                System.out.print(" ");
            }
            for (int z = 0; z <= 2 * x - 2; z++) {
                System.out.print("*");
            }
            System.out.println();
        }
    }
}