Description.

Every application needs to start somewhere so here is the frame work for the simplest window application. It creates a main window with a title bar.

How it does this.

The main functions creates an instance of a Frame derived class ColourCode. initFrame is called to create and display the window. It also adds an event handler to catch requests to close and call exit appropriately.

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

/////////////////////////////////////////////////////////////////////////////
//Class extends the frame class to display the main application frame
public class ColourCode extends Frame
{
    /////////////////////////////////////////////////////////////////////////
    //Application starts here
    public static void main (String[] args)
    {
        ColourCode frame = new ColourCode();
        frame.initFrame();
    }
        
    /////////////////////////////////////////////////////////////////////////
    //Setup the Main window
    private void initFrame()
    {
        //Add an anonymous event handler to shut down on exit
        addWindowListener( new WindowAdapter()
            {
                public void windowClosing( WindowEvent ew )
                {
                    System.exit( 0 );
                }
            } );
        
        //Set the window Size and title
        setTitle( "Code to Colour HTML" );
        setSize( 400, 200 );
        setVisible( true );
    }
}