我编译，然后在java.exe中运行这一段代码，我收到一个错误 [英] I compile and then run this bit of code in java.exe and i receive an error

问题描述

我似乎无法弄清楚这段代码有什么问题。 Eclipse告诉我main方法没有声明。当我在java.exe中运行它时，它告诉我找不到或加载主类discount.java我花了最后一个半小时寻找一个解决方案，但似乎不能弄清楚。

I can't seem to figure out what is wrong with this code. Eclipse tells me main method isn't declared. and when I run it in java.exe it tells me "could not find or load main class discount.java" I've spent the last half hour looking for a solution but can't seem to figure it out.

import java.util.Scanner;

    public class Discount
    {
      public static void main (String[] args) 
      {
        Scanner scan = new Scanner( System.in );
        int price;

        System.out.println("Enter the Price:");
        price = scan.nextInt();


        System.out.println( price / 4 * 3  );
      }
    }

我使用的命令和错误获取：

The commands I'm using and error I'm getting:

> CD C:\Programing\Misc
> set path=%path%;C:\Program Files\Java\jdk1.8.0\bin
> javac discount.java
> java discount.java
Error: Could not find out or load main class java.discount 

推荐答案

您是否使用 java discount.java ？这可能是个问题。

Are you using java discount.java? That's likely the issue.

尝试这两行：

javac discount.java
java discount


这应该运行你的main方法（假设你正确地命名了文件discount.java）。

That should run your main method (assuming that you've correctly named the file discount.java).

-

EDIT ：在看到您关于更改课程名称的评论后，想将文件重命名为Discount.java。然后运行 javac Discount.java 和 java Discount

EDIT: After seeing your comment about changing the class name, you'll want to rename the file to Discount.java. Then run javac Discount.java and java Discount

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