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

public class Pildiredaktor2 extends Applet {
  Joonistusala ala=new Joonistusala();
  public Pildiredaktor2(){
    setLayout(new BorderLayout());
    add(ala, BorderLayout.CENTER);
    ala.tyhjenda();
    ala.paneVarv(Color.blue);
    ala.joon(50, 10, 200, 20);
  }
  public static void main(String[] arg){
    Frame f=new Frame("Pildiredaktor");
    f.add(new Pildiredaktor2());
    f.setSize(300, 300);
    f.setVisible(true);
  }
  class Joonistusala extends Panel{
     BufferedImage pilt=new BufferedImage(300, 300, 
       BufferedImage.TYPE_INT_RGB);
     Graphics2D piltg=pilt.createGraphics();
     public void paint(Graphics g){
        g.drawImage(pilt, 0, 0, this);
     }
     public void tyhjenda(){
        Color abivarv=piltg.getColor();
        piltg.setColor(Color.white);
        piltg.fillRect(0, 0, 300, 300);
        piltg.setColor(abivarv);
        repaint();
     }
     public void paneVarv(Color varv){
        piltg.setColor(varv);
     }
     public void joon(int x1, int y1, int x2, int y2){
        piltg.drawLine(x1, y1, x2, y2);
        repaint();
     }
  }
}