Class names are only accepted if annotation processing is explicitly requested ошибка

This error message indicates that you are trying to use a class name in a source code file that is not being processed by the Java compiler.

There are a few potential causes for this error:

1. You may be trying to use a class name as a variable name or in some other context where it is not allowed. Make sure that you are not using a class name where a variable or function name is expected.

2. You may be trying to use a class name that is not in your classpath. Make sure that the class you are trying to use is properly imported or that its fully qualified name is used.

3. You may have forgotten to enable annotation processing. Annotation processing is a feature of the Java compiler that allows you to generate additional source code or resources based on annotations in your source code. If you are using annotations and have not explicitly enabled annotation processing, you will see this error. To enable annotation processing, you can use the -processor command line option or the apt tool.

I hope this helps! Let me know if you have any questions or if you need further assistance.

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• Solve error: Class names are only accepted if annotation processing is explicitly requested

Solve error: Class names are only accepted if annotation processing is explicitly requested

This error occurs when you try to compile your java program and forgot to include .java extension with javac command in CMD.

Let’s take an example >

First let’s write java class >

Let’s say above code in file =  E:workspaceFirstProgram.java

Go to CMD and type below commands >

Now, let’s solve the problem (error: Class names, ‘FirstProgram’, are only accepted if annotation processing is explicitly requested) by including .java extension with javac command in CMD.

As soon as javac FirstProgram.java is called .class file is formed. (.class file contains bytecode)

Directory of .class file = E:workspaceFirstProgram.class

when java FirstProgram is called it executes the .class file and output of program “This is my first Java Program” is printed in CMD.

Having any doubt? or you you liked the tutorial! Please comment in below section.

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This tutorial highlights the reasons and guides how to fix this error using a sample Java program.

Fix Class Names, 'test.java', Are Only Accepted If Annotation Processing Is Explicitly Requested in Java

Before moving towards the solution, let’s write the following Java program to understand the possible reasons for having this error.

Example Code:

//test class
public class test {
    //main()
    public static void main(String[] args) {
        //print message
        System.out.println("Hello, this is just a test program.");
    }//end main()
}//end test class

Now, use the command given below to compile the Java code.

javac writeYourFileNameHere

Here, we will get the error saying class names, 'test.java', are only accepted if annotation processing is explicitly requested (test.java is our file name, you will see your file name there).

Why is it so? As per Java documentation, there are two possible reasons for having this error.

1. We forget to add the .java suffix at the end of the file name.
2. We use improper capitalization of the .java suffix. For instance, we compile as javac test.Java

You can find both commands in the following screenshot.

How to resolve this error?

The solution for this compile time error is very simple. We only need to add the .java suffix (all in small letters).

Let’s do it by using the sample code below.

Example Code:

//test class
public class test {
    //main()
    public static void main(String[] args) {
        //print message
        System.out.println("Hello, this is just a test program.");
    }//end main()
}//end test class

This time, we compiled the code using javac test.java. If it compiles successfully, we use the java test command to run the program (don’t forget to write your own file’s name).

Both of these commands are demonstrated in the following screenshot.

OUTPUT: