Why Does My Java Code Show 'class X is public should be declared in a file named X.java'?

Class Name and Source File Name Mismatch

The error "class X is public should be declared in a file named X.java" indicates a discrepancy between the name of the public class and the name of the source file containing it.

The rules for Java naming conventions dictate that a public class must always be declared within a file with the same name as the class itself, with the extension ".java." For instance, a public class named "MyClass" should be declared in a file called "MyClass.java."

Solution

To resolve this issue, you can either rename your source file or rename the public class within the file. Here are the steps you can take:

• Rename Source File: Change the name of your source file to match the name of the public class. In this case, change "Main.java" to "WeatherArray.java."
• Rename Public Class: Change the name of the public class within the file to match the name of the source file. Adjust the code to:

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

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