Deprecation Question

Question

I am very new at Java and was wondering if someone could give me some direction on this code sample. Ist probably something easy, but as I said I am very new.
import java.awt.*;
import java.applet.*;
public class Mystery5 extends Applet{
     Image Buffer;
     Graphics gBuffer;
public void init(){
     Buffer=createImage(size().width,size().height);
     gBuffer=Buffer.getGraphics();
     public boolean mouseDown(Event evt,int x,int y){
          drawRB(x,y);
          repaint();
          return true;
     public void drawRB(int x, int y){
     int red=(int)(Math.random()*255);
     int green=(int)(Math.random()*255);     
     int blue=(int)(Math.random()*255);
     Color randomColor=new Color(red,green,blue);
     gBuffer.setColor(randomColor);
     int diameter=(int)(Math.random()*90)+10;
     gBuffer.fillOval(x-diamter/2,y-diameter/2,diameter,diameter);
     public void update(Graphics g){
     paint(g);
     public void paint(Graphics g){
          gBuffer.setColor(Color.black);
          gBuffer.drawString("Click the applet to go!", 50,20);
          g.drawImage(Buffer,0,0,this);
the errors I get are :
When I compile I recieve these..
Mystery5.java uses or overrides a deprecated API.
recomplie with -deprecation for details
Mystery5.java:27: cannot resolve symbol
symbol: variable diameter
location: class Mystery5
gBuffer fill Oval(x-diamter/2,y-diameter/2,diameter,diamter);
^
Thank you very much

Answer 1

Sometimes you spell "diameter" as "diamter". While what you mean is obvious to us humans, the compiler is not as smart.
What comes to the use of deprecated API, don't worry about it (yet). The warning only says that you are doing something that is not recommended anymore but will likely work still.
(What that something is, is using the old event handling mechanism by overriding mouseDown, and accessing the fields width and height directly instead of through the accessor methods where it sasy "createImage(size().width, size().height).")