请问一下这道java怎么写？

Question

Answer 1

package test;

import java.util.Scanner;

public class Test {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("printparallelogram");
        System.out.println("printtriangle");
        System.out.println("Input your choice");
        int choice = scanner.nextInt();
        if (choice == 1) {
            System.out.println("Input x:");
            int x = scanner.nextInt();
            System.out.println("Input y:");
            int y = scanner.nextInt();
            drawing(x, y);
        } else if (choice == 2) {
            System.out.println("Input x:");
            int x = scanner.nextInt();
            drawing(x);
        }

    }

    /**
     * 平行四边形
     * 
     * @param x
     * @param y
     */
    public static void drawing(int x, int y) {
        // 外层循环 每次打出一个*
        for (int i = 1; i <= x; i++) {
            // 填充空格
            for (int j = 1; j <= x - i; j++) {
                System.out.print(" ");
            }
            // 内层循环 每次打印一个*
            for (int k = 1; k <= y; k++) {
                System.out.print("*");
            }
            System.out.println();
        }
    }

    /**
     * 三角形
     * 
     * @param x
     */
    public static void drawing(int x) {
        // a 控制行
        for (int i = 0; i < x; i++) {
            for (int j = 0; j < x - i; j++)// 输出空格随着循环是递减的
            {
                System.out.print(" ");
            }
            for (int k = 0; k <= i * 2; k++)// 输出*号随着外循环是递增的
            {
                System.out.print("*");
            }
            System.out.println();
        }
    }
}