我是Java初学者,正在尝试使用IntelliJ运行我的代码,我刚刚将它安装为JDK 1.7的IDE。下面这段代码甚至不能编译,并不断给我错误:

Error: Could not find or load main class libTest

Code

import java.lang.Integer;
import java.lang.String;
import java.lang.System;
import java.util.*;

class book {

    private String name = "trial";
    private int bookCode=1;
    private int issued=0;

     public void Issue(){
         if(issued==0) {
             issued=1;
             System.out.println("You have succesfully issued the book");
         }
         else {
             System.out.println("The book is already issued. Please contact the librarian for further details");
         }
    }

    public int checkCode() {
        return bookCode;
    }

    String readName() {
        return name;
    }

    public void setName(String newName){
        name=newName;
    }

    public void setBookCode(int newCode){
        bookCode=newCode;
    }
}

class library {
    private ArrayList books=new ArrayList();

    public void getList(){
        for(int bk:books){
            String bName=books(bk).readName();
            System.out.println((bk+1)+")  "+bName);
        }
    }
}

public class libTest{
    public static void main(String[] args){
        library newLib= new library();
        System.out.println("code working");
   }
}

有任何改变,我必须在编译器设置??或者是代码。


当前回答

I am working with Kotlin but am guessing the problem is the same. I would start a project, create a single file and add main to it and the IDE couldn't find the main. I tried the things in this list and none worked. I finally mentioned my frustration on one of the IntelliJ pages and was contacted. Of course, it worked fine for IntelliJ. After a couple of days back and forth, I noticed that the highlight function wasn't working and mentioned that. It turned out something was wrong with the IDE settings. I still don't know specifically what was wrong but the fix in my case was to reset the IDE settings. File->Manage IDE Settings->Restore Default settings. After this, the green triangle start icon became visible to the left of my main function and things continued to work normally for subsequent projects. Thanks to Konstantin at JetBrain's support for his patience.

其他回答

尝试检查您的项目名称和完整目录名称,看看是否包含任何“非英语”单词(如亚洲单词),有时这可能是错误的。重命名项目名称或项目路径包含这样的单词并重新打开它可能有效。

简单的解决方案是在命令行中转到受支持的文件夹,其中是项目的根文件夹。您应该在您的机器中安装SBT。

如果你已经安装了sbt,请运行命令“sbt package”,这将重新编译项目,如果它成功,回到intelliJ它将工作。

在我的情况下,这是一个maven项目,我重新导入maven(右键单击pom.xml文件并单击重新导入),它立即工作。

我在使用Scala/SBT时得到了这个错误。IntelliJ无法找到主类,尽管一切都设置正确。 我的解决方案是:删除<用户>/。sbt/<version>/plugins/目标文件夹,然后重启IntelliJ。

我在Spring中使用IntelliJ,我的主类被包装在JAR中。 我必须在运行/调试配置对话框中标记“包含具有“提供”范围的依赖项”