Ok, another one for you guys!

Question

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
public class Scribble extends Applet implements
MouseListener,
     MouseMotionListener {
     int oldX, oldY;
     public void init() {
          // Register the event handlers
          addMouseListener(this);
          addMouseMotionListener(this);
     public void mouseMoved(MouseEvent evt) {
          Graphics g = getGraphics();
          g.drawLine(oldX, oldY, evt.getX(), evt.getY());
          g.dispose();
          oldX = evt.getX();
          oldY = evt.getY();
     public void mouseEntered(MouseEvent evt) {
     public void mouseExited(MouseEvent evt) {
     public void mousePressed(MouseEvent evt) {
          oldX = evt.getX();
          oldY = evt.getY();
     public void mouseReleased(MouseEvent evt) {
     public void mouseClicked(MouseEvent evt) {
Error:
Scribble.java:5: Scribble should be declared abstract; it does not define mouseD
ragged(java.awt.event.MouseEvent) in Scribble
public class Scribble extends Applet implements
^
1 error

Answer 1

So? It's saying you didn't implement mouseDragged, which you agreed to do when you said it implements MouseMotionListener. So implement it.
Rather than making your applet implement the mouse interfaces, you could create inner classes that do, and then make those inner classes subclass MouseAdapter and MouseMotionAdapter.
You'd end up with smaller, tighter code.