java - 为什么我的代码可以在某些网站上运行，但不能在 NetBeans 中运行？

Question

我正在 Netbeans 上编写此代码，但在第 44 行遇到错误 Exception in thread "main"java.lang.RuntimeException: Uncompilable source code - incomplete types: int Can be Convert to boolean。

我在两个网站上编写了此代码，它运行没有问题，但在 NetBeans 上我收到此错误。

我正在尝试获取此输出

输入三个整数: 1 4 0选择状态:用户做出的第一选择 (1)用户做出第二选择 (4)选择数 = 2

和这个输出

输入三个整数: 7 5 7选择状态:用户做出的第一选择 (7)用户做出第二选择 (5)用户做出第三选择 (7)选择数 = 3

import java.util.Scanner;

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

System.out.println("Teacher's Copy");

Scanner input = new Scanner(System.in);

System.out.println("Enter three integers: ");
int firstchoice = input.nextInt();
int secondchoice = input.nextInt();
int thirdchoice = input.nextInt();


if (firstchoice == 0)
System.out.println("State of choices: \n" +
"no choices made yet");

else if (secondchoice == 0)
System.out.println("State of choices: \n" +
"user made firstchoice ( " +firstchoice + ") \n" + 
"number of choices = 1");

if (thirdchoice == 0)
System.out.println("State of choices: \n" + 
"user made firstchoice (" + firstchoice + ")\n" +
"user made secondchoice (" + secondchoice + ")\n" +
"number of choices = 2"); 

System.out.println("State of choices: \n" + 
"user made firstchoice (" + firstchoice + ")\n" +
"user made secondchoice (" + secondchoice + ")\n" +
"user made thirdchoice (" + thirdchoice + ")\n" +
"number of choices = 3");

  }


}

先谢谢大家了!

Answer 1

您的代码绝对正确。也许，当您尝试复制代码时，Netbeans 正在搞乱您