error: Class names are only accepted if annotation processing is explicitly requested in java: solution

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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 >
public class FirstProgram {
   public static void main(String[] args) {
          System.out.println("This is my first Java Program");
   }
}

Let’s say above code in file =  E:\workspace\FirstProgram.java

Go to CMD and type below commands >
C:\Users\ankitmittal01>e:

E:\>cd E:\workspace

E:\workspace>javac FirstProgram
error: Class names, 'FirstProgram', are only accepted if annotation processing is explicitly requested
1 error

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.

E:\workspace>javac FirstProgram.java

E:\workspace>java FirstProgram
This is my first Java Program

E:\workspace>

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

Directory of .class file = E:\workspace\FirstProgram.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.




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