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

public class PuhverApplet extends Applet implements ComponentListener{

   Image puhver;
   Graphics puhvriG;
   
	public PuhverApplet(){
		addComponentListener(this);
	}

	public void update(Graphics g){
		//System.out.println("update..");
		paint(g);
	}

	public final void paint(Graphics g){
		//System.out.println("paint..");
		if (puhver == null){
			puhver = createImage(getSize().width, getSize().height);  //1.1 compatible (on ka getWidth() ja ...)  
			puhvriG = puhver.getGraphics();
		}
		koostaPilt(puhvriG);
		g.drawImage(puhver, 0, 0, this);
	}

	public void koostaPilt(Graphics g){
		//Siin tehakse järglasklassides kogu joonistamine.
		//paint meetodit ei tohi järglased puutuda.
		//Et anda käsk joonistada, tuleb kutsuda repaint();
	}

	public void componentResized(ComponentEvent e){
		//Invoked when the component's size changes.
		System.out.println( e.paramString() );
		puhver = null; //järgmise paintimisega luuakse uus puhver
		repaint();
	}

	public void componentMoved(ComponentEvent e){
		//Invoked when the component's position changes.
	}
	public void componentHidden(ComponentEvent e){
		//Invoked when the component has been made invisible.
	}
	public void componentShown(ComponentEvent e){
		//Invoked when the component has been made visible.
	}

}