The public type HelloWorld must be defined in its own fileJava(16777541)这个错误怎么解决

这个错误是因为你在同一个文件中定义了两个public类，而Java规定一个文件中最多只能有一个public类且文件名必须与该类名相同。如果你想要定义多个public类，每个类应该放在单独的文件中。

要解决这个问题，你可以将其中一个public类移动到另一个文件中，或者将它们都定义为非public类。如果你希望其中一个类仍然是public类，你需要将它放在一个单独的文件中，并将文件名改为与该类名相同。

相关问题

The public type Student must be defined in its own fileJava(16777541) No quick fixes available

As an AI language model, I cannot perform actions on your local machine or environment. However, I can suggest a solution to the error you're getting.

The error "The public type Student must be defined in its own file" usually occurs when you have a public class defined in a file with a different name. To fix this error, you need to ensure that the public class is defined in a file with the same name as the class.

For example, if you have a public class named "Student", the file name should be "Student.java". If the class is defined in a file with a different name, you will get the error mentioned above.

Here is an example of how to define the Student class in its own file:

// Student.java file
public class Student {
    // class definition
}

Ensure that the file name and the class name are the same. If you have multiple classes defined in the same file, ensure that only one of them is public and has the same name as the file.

Once you have made the necessary changes, save the file and recompile your code. This should fix the error.

The public type Square must be defined in its own file

This error message means that you have defined a public class called "Square" in a file where other classes are also defined. To resolve this error, move the definition of the "Square" class into its own file, separate from the other classes.

Here's an example of what the file structure might look like:

- Square.java (contains the definition of the public class "Square")
- OtherClass1.java (contains the definition of another class)
- OtherClass2.java (contains the definition of another class)

By separating the definition of the "Square" class into its own file, you can ensure that it is properly encapsulated and can be easily reused in other parts of your code.