Editor does not contain a main type in Eclipse [duplicate]

Question

I downloaded eclipse-jee-kepler-SR1-linux-gtk-x86_64.tar.gz. This eclipse is built-in with java and my Lubuntu is 64-bit. Whenever I compile and run a simple code in java like this one below:

public class Sample{     public static void main(String[] args){        System.out.println("YOLO");    } } 

I always get an Editor does not contain a main type. I put the file in a project folder called Sample. This eclipse should compile java code because its an IDE distribution specialized for java.

How can i resolve this error?

Any help would be much appreciated.

Here's my project structure:

Answer 1

Problem is that your folder is not identified as a Source folder.

1. Right click on the project folder -> Properties
2. Choose 'Java Build Path'
3. Click on 'Sources' tab on top
4. Click on 'Add Folder' on the right panel
5. Select your folders and apply

Answer 2

I just had this exact same problem. This will sound crazy but if someone sees this try this before drastic measures. delete method signature:

public static void main(String args[]) 

(Not the body of your main just method declaration)

Save your project then re-write the method's header back onto its respective body. Save again and re-run. That worked for me but if it doesn't work try again but clean project right before re-running.

I don't know how this fixed it but it did. Worth a shot before recreating your whole project right?