//HelloApplet.java
//applet demo to show how easy it is to create an applet

import java.awt.*;
import javax.swing.*;


public class HelloApplet extends JApplet {     //***
    
    //no main incantation...
    //no JFrame Container setVisible...

    //fields that need to be shared by init and paint methods:
    String name;
    

    //init() for setting up GUI, if any, and getting input, if any.
    //called automatically.
    public void init() {
	name = JOptionPane.showInputDialog( "Hello, what's your name?" );
    }
    
    
    //paint draws in the applet.
    //called automatically after init() and whenever window is uncovered.
    public void paint( Graphics g ) {

	//this example can be made easier by using constants instead
	//of getWidth() and getHeight()...
       g.setColor( Color.GREEN );
       g.fillOval( 0, 0, getWidth()/2, getHeight()/2 );
       
       g.setColor( Color.MAGENTA );
       g.fillOval( getWidth()/2, 0, getWidth()/2, getHeight()/2 );
       
       g.setColor( Color.CYAN );
       g.fillOval( 0, getHeight()/2, getWidth()/2, getHeight()/2 );
       
       g.setColor( Color.YELLOW );
       g.fillOval( getWidth()/2, getHeight()/2, getWidth()/2, getHeight()/2 );
       
       g.setColor( Color.RED );
       g.drawLine( 0, 0, getWidth(), getHeight() );
       g.drawLine( 0, getWidth(), getHeight(), 0 );
       g.drawRect( 10, 10, getWidth()-20, getHeight()-20 );
       g.drawOval( 0, 0, getWidth()-1, getHeight()-1 );
       
       g.setColor( Color.BLUE );
       g.setFont( new Font( "Serif", Font.BOLD, 16 ) );
       g.drawString( name, getWidth()/2-20, getHeight()/2 );
   } 
} 

/*
Need an .html file that contains:
<applet code="HelloApplet.class" width="400" height="400">
</applet>


Run the applet either by appletviewer:
  command line:
appletviewer HelloApplet.html           
  JCreator: execute the .html file

or by web browser:
open the .html file

*/