错误：无法在intelliJ IDE中找到或加载主类

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我是Java的初学者，我正在尝试使用IntelliJ运行我的代码，我刚刚安装了JDJ 1.7作为我的IDE。以下代码保持甚至不编译并一直给我错误：

I'm a beginner in Java and am trying to run my code using IntelliJ that I just installed as my IDE with JDK 1.7. The following piece of code keeps does not even compile and keeps giving me the error:

Error: Could not find or load main class libTest

代码

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"); } }

我必须在编译器设置??或者是代码。

Is there any change that i have to make in the compiler settings?? Or is it the code.

推荐答案

这可能有所帮助：

1）构建菜单 - >重建项目。 有时Intellij不会重写类，因为它们已经存在，这样你就要求Intellij重写所有内容。

1) "Build" menu -> "Rebuild Project". Sometimes Intellij doesn't rewrite the classes because they already exist, this way you ask Intellij to rewrite everything.

2）运行菜单 - > 编辑配置 - >删除配置文件 - >添加配置文件（应用程序，如果它是Java应用程序），从主类下拉菜单中选择主类。

2) "Run" menu -> "Edit configuration" -> delete the profile -> add back the profile ("Application" if it's a Java application), choose your main class from the "Main Class" dropdown menu.

3）构建菜单 - >重建项目。

3)"Build" menu -> "Rebuild Project".