import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;

public class HelloWorldMIDlet extends MIDlet
{
    public HelloWorldMIDlet()
    {
    }

    public void startApp()
    {
        Displayable current = Display.getDisplay(this).getCurrent();
        if(current == null)
        {
            HelloScreen helloScreen = new HelloScreen(this, "Hello World.");
            Display.getDisplay(this).setCurrent(helloScreen);
        }
    }

    public void pauseApp() 
    {
    }

    public void destroyApp(boolean b) 
    {
    }

    void exitRequested()
    {
        destroyApp(false);
        notifyDestroyed();
    }
}