Different Files Open in File -> Open Workspace

[mgm2010]

I ran and saved the following file in JCreator

//Print in tabs
//Java 2 page 196 EXERCISE
public class ControlJ02Pg0196PrintTabsFile20090411{
	public static void main( String args []){
		int x = 4;             //x initialized to 4
		
		while( x <= 40 ){
			System.out.print(x);
			
			if( x % 7 == 0)      //The number 7 here indicates the number of tabs
			System.out.println();
			
			else
			System.out.print( '\t');
			
			x += 4;         //x will vary in steps of 4
		}
	}
}

But when I open the same file from File -> Open Workspace, the following two files open

/**
 * AWT Sample application
 *
 * @author 
 * @version 1.00 09/04/11
 */
public class ControlJ02Pg0196PrintTabs20090411 {
    
    public static void main(String[] args) {
        // Create application frame.
        ControlJ02Pg0196PrintTabs20090411Frame frame = new ControlJ02Pg0196PrintTabs20090411Frame();
        
        // Show frame
        frame.setVisible(true);
    }
}

and

import java.awt.*;
import java.awt.event.*;

/**
 * Sample application using Frame.
 *
 * @author 
 * @version 1.00 09/04/11
 */
public class ControlJ02Pg0196PrintTabs20090411Frame extends Frame {
    
    /**
     * The constructor.
     */  
     public ControlJ02Pg0196PrintTabs20090411Frame() {
                
        MenuBar menuBar = new MenuBar();
        Menu menuFile = new Menu();
        MenuItem menuFileExit = new MenuItem();
        
        menuFile.setLabel("File");
        menuFileExit.setLabel("Exit");
        
        // Add action listener.for the menu button
        menuFileExit.addActionListener
        (
            new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    ControlJ02Pg0196PrintTabs20090411Frame.this.windowClosed();
                }
            }
        ); 
        menuFile.add(menuFileExit);
        menuBar.add(menuFile);
        
        setTitle("ControlJ02Pg0196PrintTabs20090411");
        setMenuBar(menuBar);
        setSize(new Dimension(400, 400));
        
        // Add window listener.
        this.addWindowListener
        (
            new WindowAdapter() {
                public void windowClosing(WindowEvent e) {
                    ControlJ02Pg0196PrintTabs20090411Frame.this.windowClosed();
                }
            }
        );  
    }
    
    
    /**
     * Shutdown procedure when run as an application.
     */
    protected void windowClosed() {
    	
    	// TODO: Check if it is safe to close the application
    	
        // Exit application.
        System.exit(0);
    }
}

What is happening ?? I don,t even understand the above two files.

[sogotra]

thank you so much