如何在Java中保持switch语句继续 [英] How to keep switch statement continuing in Java

问题描述

我希望重复以下菜单：

选择一个选项

Choose an Option

1-查找

2-送入

3-送出

因此，当用户选择一个选项（并且该选项将被执行）后，他们还可以选择其他选项。

So that when a user selects an option (and this will be executed), afterwards they can select other options as well.

问题：我的代码使菜单重复执行而没有停止。

Problem: My code keeps the menu repeating without stopping.

import java.util.Scanner;

public class MainMenu {
    public static void main(String[] args) {
        int userChoice;
        userChoice = menu();
    }

    private static int menu() {
        Scanner scanner = new Scanner(System.in);
        System.out.println("Choose an Option");
        System.out.println("1 - FIND");
        System.out.println("2 - IN-SHUFFLE");
        System.out.println("3 - OUT-SHUFFLE");

        int choice = scanner.nextInt();
        boolean quit = false;
        do {
            System.out.println("Choose an Option");
            switch (choice) {
                case 1:
                    System.out.println("\n1 - FIND\n");
                    //Deck.findTop();
                    break;
                case 2:
                    System.out.println("\n2 - IN-SHUFFLE\n");
                    // call method
                    break;
                case 3:
                    System.out.println("\n3 - OUT-SHUFFLE\n");
                    // call method
                    break;
                default:
                    System.out.println("\nInvalid Option");
                    break;
            }
        }
        while (!quit);

        return choice;
    }

}

我不确定如何可以阻止它不断重复。

I'm not sure how I can stop it from constantly repeating.

推荐答案

尝试一下。

import java.util.Scanner;
public class Switchh {

static boolean quit = false;

public static void main(String[] args) {
    int userChoice;
    userChoice = menu();
}

private static int menu() {
    Scanner scanner = new Scanner(System.in);
    int choice;
    do {

        System.out.println("Choose an Option");
        System.out.println("1 - FIND");
        System.out.println("2 - IN-SHUFFLE");
        System.out.println("3 - OUT-SHUFFLE");
        choice = scanner.nextInt();
        System.out.println("Choose an Option");
        switch (choice) {
            case 1:
                System.out.println("\n1 - FIND\n");
                //Deck.findTop();
                break;
            case 2:
                System.out.println("\n2 - IN-SHUFFLE\n");
                // call method
                break;
            case 3:
                System.out.println("\n3 - OUT-SHUFFLE\n");
                // call method
                break;
            default:
                System.out.println("\nInvalid Option");
                quit = true;
                break;
        }
    }
    while (!quit);

    return choice;
}

}

这篇关于如何在Java中保持switch语句继续的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！