Emulator runtime error - java.lang.IllegalAccessException

Question

Hi
Im working through some example code, and when i build, everything is fine, with no errors, however when i run in the emulator, even though at this moment the program actually does nothing, its just a skeleton, i get the following error:
Unable to create MIDlet MyC
java.lang.IllegalAccessException
at com.sun.midp.midlet.MIDletState.createMIDlet(MIDletState.java:148)
at com.sun.midp.midlet.Selector.run(Selector.java:151)
For hours, i have been pondering over the code, but the answer eludes me as to why i get this error
Here is the main midlet:
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.lcdui.game.*;
public class my extends MIDlet implements CommandListener {
private MyC canvas;
public void startApp() {
if (canvas == null) {
canvas = new MyC(Display.getDisplay(this));
Command exitCommand = new Command("Exit", Command.EXIT, 0);
canvas.addCommand(exitCommand);
canvas.setCommandListener(this);
// Start up the canvas
canvas.start();
public void pauseApp() {}
public void destroyApp(boolean unconditional) {
canvas.stop();
public void commandAction(Command c, Displayable s) {
if (c.getCommandType() == Command.EXIT) {
destroyApp(true);
notifyDestroyed();
here is the class it uses:
import javax.microedition.lcdui.*;
import javax.microedition.lcdui.game.*;
import java.util.*;
import java.io.*;
public class MyC extends GameCanvas implements Runnable
private Display display;
private Sprite playerSprite;
private boolean sleeping;
private long framedelay;
public MyC(Display d)
super(true);
display = d;
framedelay = 33;
public void start()
display.setCurrent(this);
try
playerSprite = new Sprite(Image.createImage("/player.png"),12,12);
catch (IOException e){}
sleeping = false;
Thread t = new Thread(this);
t.start();
public void stop()
public void run()
Graphics g = getGraphics();
while (!sleeping)
update();
draw(g);
try
Thread.sleep(framedelay);
catch (InterruptedException ie) {}
private void update()
return;
private void draw(Graphics g)
playerSprite.paint(g);
flushGraphics();
}

Answer 1

im using j2me, and yes, i have gone straight for
mobile phone midlet programming. That isn't going to be easy.
When i remove the
detail at the end of the constructor, the code wont
exectute at all. By looking at the code i presented
here, is there anything noticeable as to why i keep
getting this error?"Won't execute" doesn't tell me anything.
Removing the parameter means that you need to do other things to the code because there will be undefined items.
If you are copying code exactly as it appears in a tutorial then you need to be aware that you might be working with different versions of code (java and midlet) and/or there might be mistakes in the tutorial. Of course if you modified the tutorial code then you could be introducing problems as well. You can look for other sources of documentation which might provide more information as to what a minimal set up looks like.