Question

我的代码的目的是输入一个引脚，它会检查它是否正确。如果不是，问题就会循环。出于某种原因，我的代码没有正确循环，并且很多代码都有下划线。特别是while循环本身和第二个JOptionPane

// package loop;

import javax.swing.JOptionPane;


public class loop {


public static void main(String[] args) {
    int correctPin = 3333; 
    int count = 0;
    String maybePin = JOptionPane.showInputDialog("Please enter the PIN"); 
    int sMaybePin = Integer.parseInt(maybePin); 
    while(correctPin != sMaybePin);{ 
       maybePin = JOptionPane.showInputDialog("Please enter the PIN"); 

       count = count-1; 
}
   JOptionPane.showMessageDialog(null, count);
}
}

Answer 1

 while(correctPin != sMaybePin); <--

查看那个终止循环的;。你需要删除它。

Answer 2

您永远不会更新var uriString = string.Format("{0}/{1}", "http://hostaddress/api/ControladorServico/GetServico", nomeServico); var result = await GetAsync<YourModel>(uriString);，这是您要检查的变量。如果你做的话@John和@ANS建议你陷入无限循环。

Answer 3

删除;在while语句之后并正确地将变量sMaybePin的值设置为输入值并且不能正常工作

public static void main(String[] args) {
    int correctPin = 3333;
    int count = 0;
    String maybePin = JOptionPane.showInputDialog("Please enter the PIN");
    int sMaybePin = Integer.parseInt(maybePin);
    while(correctPin != sMaybePin){
        sMaybePin = Integer.parseInt(JOptionPane.showInputDialog("Please enter the PIN"));

        count = count-1;
    }
    JOptionPane.showMessageDialog(null, count);
}

不知道为什么我的while循环不起作用（Java）..？

3 个答案: