How to load an applet with 2 classes and get it to display properly

Ok I am a very newbie as you can tell by code below but I need help duh. I am a student taking a Java course on my own (ie no marks) so I know what I am doing in a second level java courseI am not sure if my problem is with "Forte for Java 4, CE" or my code. I have two files. Door.java and Exercise4a.java
The code is as follows:
Door.java
package Exercise4.Exercise4a;
import java.awt.*;
import java.applet.*;
public class Door extends java.applet.Applet {
/** Creates a new instance of Door */
int x;
int y;
public void init() {
Graphics b;
public Door(Point aPoint)
x = (int)aPoint.getX();
y = (int)aPoint.getY();
public void paint(Graphics graphics)
graphics.drawRect(0 + x ,0 + y, 20,30);
graphics.setColor(Color.black);
graphics.fillOval(15 + x,15 + y ,5,5);
graphics.drawImage(buffer,0,0,this);
public static void main(String args[]){}
and Exercise4a.java
package Exercise4.Exercise4a;
import java.awt.*;
import java.applet.*;
public class Exercise4a extends java.applet.Applet {
Graphics b;
public void init() {
Point a = new Point(0,0);
Door door = new Door(a);
My problem is that I do not see my door when I compile either file.
What am I doing wrong? Is this acode problem. ie how do I load the graphics or is it that I am not compiling it correctly.

package Exercise4.Exercise4a;
import java.awt.*;
import java.applet.*;
public class Exercise4a extends java.applet.Applet {
Graphics b;
public void init() {
Point a = new Point(0,0);
Door door = new Door(a);// door.paint (b)

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