Different Files Open in File -> Open Workspace

I ran and saved the following file in JCreator

Code:

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//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
                }
        }
}

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

Code:

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/**
 * 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);
    }
}

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and

Code:

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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);
    }
}

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