transparenterne - Objektorienteret programmering i Java

StregApplet
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import java.util.*;
import javax.swing.*;
public class StregApplet extends Applet {
///////////////////////////////////////
Vector punkter=new Vector();
Canvas tegnePlade;
JPanel nedreKnapPanel = new JPanel();
JButton sletPunktKnap = new JButton();
JToggleButton flytPunkterKnap = new JToggleButton();
//////////////////////////////////////
boolean isStandalone = false;
BorderLayout borderLayout1 = new BorderLayout();
/**Initialize the applet*/
public void init() {
try {
jbInit();
}
catch(Exception e) {
e.printStackTrace();
}
}
/**Component initialization*/
private void jbInit() throws Exception {
this.setLayout(borderLayout1);
sletPunktKnap.setText("slet punkt");
sletPunktKnap.addActionListener(new
java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
sletPunktKnap_actionPerformed(e);
}
});
tegnePlade = new TegnePlade(this);
tegnePlade.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(MouseEvent e) {
tegnePlade_mouseClicked(e);
}
public void mouseReleased(MouseEvent e) {
tegnePlade_mouseReleased(e);
}
});
flytPunkterKnap.setText("flyt punkter");
flytPunkterKnap.addActionListener(new
java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
flytPunkterKnap_actionPerformed(e);
}
});
tegnePlade.addMouseMotionListener(new
java.awt.event.MouseMotionAdapter() {
public void mouseDragged(MouseEvent e) {
tegnePlade_mouseDragged(e);
}