Main method not found in the file

The "Main method not found in the file" error typically occurs when you try to run a Java program without a main method. The main method is the entry point of a Java program, and it must be present for the program to execute correctly.

To fix this error, make sure your Java file contains a main method with the correct signature. The main method in Java looks like this:

public static void main(String[] args) {
    // code here
}

Ensure that you have written the main method with the correct capitalization and syntax. The "String[] args" parameter is optional and can be omitted if you don't need to pass any command-line arguments.

If you have multiple classes in your program, make sure that the class containing the main method is marked as the entry point or selected as the "Run" configuration in your IDE.

If you're still encountering issues, please provide more details or share your code so that I can assist you further.