Java 确认对话框不工作

我正在尝试这样做，在你玩游戏并确定胜利者后，它会询问用户是否想再次玩。我添加了一个“DoWhile”循环，但它似乎不起作用。输出始终是以下内容：

• 玩游戏
• 获得赢家/输家/平局并得分
• 再次询问您想要选择什么
• 然后询问用户是否想再次播放
• 即使用户说不，也不会停止游戏

我不确定问题是什么，因为我对编码还很陌生。谢谢

/*
Playing Rock Paper Scissors against a computer would be really boring if we 
always knew what the computer was going to choose, or we created a program 
that has a distinct pattern. In order to increase replayability of your game
you will want to randomize the computer's choice.

For our game we will have the computer generate a random number (0, 1, or 2) 
which will correspond to one of the choices (i.e. 0 = Rock, 1 = Paper, 2 = 
Scissors)  
 */

import javax.swing.*;
public class rockPaperScissors {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        int playAgain = 0;
        int score = 0;
        String [] playerOptions = {"Rock","Paper","Scissor"};
        String playerChoice = (String)JOptionPane.showInputDialog(null,"1, 2, 3, Shoot:",
                "Rock, Paper, Scissor",JOptionPane.QUESTION_MESSAGE,null,playerOptions,playerOptions[0]);//Gets players pick
        int computerChoice = (int)(Math.random()*(3));//gets computers choice randomly
        while (playerChoice.equals("Rock") || playerChoice.equals("Paper") || playerChoice.equals("Scissors")) {

            do {
                if (computerChoice == 0 && playerChoice.equals("Rock")) {
                    JOptionPane.showMessageDialog(null,"Tied! You both chose rock.");//determines winner and prints only for tied and wins for user
                    System.out.println(score);

                    playerChoice = (String)JOptionPane.showInputDialog(null,"1, 2, 3, Shoot:",
                            "Rock, Paper, Scissor",JOptionPane.QUESTION_MESSAGE,null,playerOptions,playerOptions[0]);
                } else if (computerChoice == 0 && playerChoice.equals("Paper")) {
                    JOptionPane.showMessageDialog(null,"You won!");

                    score = score+1;
                    System.out.println(score);

                    playerChoice = (String)JOptionPane.showInputDialog(null,"1, 2, 3, Shoot:",
                            "Rock, Paper, Scissor",JOptionPane.QUESTION_MESSAGE,null,playerOptions,playerOptions[0]);
                } else if (computerChoice == 1 && playerChoice.equals("Paper")){
                    JOptionPane.showMessageDialog(null,"Tied! You both chose Paper!");
                    System.out.println(score);

                    playerChoice = (String)JOptionPane.showInputDialog(null,"1, 2, 3, Shoot:",
                            "Rock, Paper, Scissor",JOptionPane.QUESTION_MESSAGE,null,playerOptions,playerOptions[0]);
                } else if (computerChoice == 1 && playerChoice.equals("Scissor")){
                    JOptionPane.showMessageDialog(null,"You won!");
                    score = score+1;
                    System.out.println(score);

                    playerChoice = (String)JOptionPane.showInputDialog(null,"1, 2, 3, Shoot:",
                            "Rock, Paper, Scissor",JOptionPane.QUESTION_MESSAGE,null,playerOptions,playerOptions[0]);
                } else if (computerChoice == 2 && playerChoice.equals("Scissor")) {
                    JOptionPane.showMessageDialog(null,"Tied! You both chose scissor!");
                    System.out.println(score);

                    playerChoice = (String)JOptionPane.showInputDialog(null,"1, 2, 3, Shoot:",
                            "Rock, Paper, Scissor",JOptionPane.QUESTION_MESSAGE,null,playerOptions,playerOptions[0]);
                } else if (computerChoice == 2 && playerChoice.equals("Rock")){
                    JOptionPane.showMessageDialog(null,"You won!");
                    score = score+1;
                    System.out.println(score);

                    playerChoice = (String)JOptionPane.showInputDialog(null,"1, 2, 3, Shoot:",
                            "Rock, Paper, Scissor",JOptionPane.QUESTION_MESSAGE,null,playerOptions,playerOptions[0]);
                } else { //if user lost 
                    JOptionPane.showMessageDialog(null,"You lost! Try again!");
                    score = score-1;
                    System.out.println(score);

                    playerChoice = (String)JOptionPane.showInputDialog(null,"1, 2, 3, Shoot:",
                            "Rock, Paper, Scissor",JOptionPane.QUESTION_MESSAGE,null,playerOptions,playerOptions[0]);
                }
                playAgain = JOptionPane.showConfirmDialog(null, "Play again?");
            } while (playAgain == 0);
        }
        System.out.println("Game Ended");
        System.exit(0);
    }
}

---

你的循环是错误的

while (playerChoice.equals("Rock") || playerChoice.equals("Paper") || /*...*/) 
{
    do {
        // did they win?
        // ...
        playAgain = JOptionPane.showConfirmDialog(null, "Play again?");
    } while (playAgain == 0);
}

你想把do-while循环移动到几乎所有游戏的逻辑上，例如

do {
    // get input and computer choice
    while (playerChoice.equals("Rock") || playerChoice.equals("Paper") || /*...*/)
    {
        // did they win?
        // ...
    }
    playAgain = JOptionPane.showConfirmDialog(null, "Play again?");
} while (playAgain == 0);

---

所以我试过了，但我不确定我是否还是做对了。当我试图用括号关闭代码时，它总是给我一个错误<代码>while（playreach==0）{do{String playerChoice=（String）JOptionPane.showInputDialog（null，“1，2，3，shot:”，“摇滚，纸，剪刀”，JOptionPane.QUESTION_MESSAGE，null，playerOptions，playerOptions[0]）；//让玩家选择int计算机选项=（int）（Math.random（）*（3））；//在（playerChoice.equals（“石头”）| playerChoice.equals（“纸”）| playerChoice.equals（“剪刀”）{也许可以用新代码编辑你原来的问题。我看不懂。