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

public class ExcepTest extends MIDlet implements CommandListener{
  private Display display;   // a display object
  private Command Exit; // a button to exit the midlet
  private Form Main; // create aform
  private boolean reallyExit = false; // do you really want to exit

  // midlet constructor
  public ExcepTest(){
    display = Display.getDisplay(this);
    Main = new Form("Exception Testing");
    Exit = new Command("Exit",Command.SCREEN, 1);
    Main.addCommand(Exit);
    Main.setCommandListener(this);
  }
  // start the midlet
  public void startApp(){
    display.setCurrent(Main);
  }
  public void pauseApp(){
   // no action
  }
  public void destroyApp(boolean unconditional) throws MIDletStateChangeException
  {
    System.out.println("Inside destroyApp()");
    // if we do not need unconditional exit
    if (unconditional ==false){
      System.out.println("Request not to be shutdown");
      throw new MIDletStateChangeException("Do not shut me down");
    }
  }
  // check if the exit command was slected
  public void commandAction(Command c, Displayable s)
  {
    if (c == Exit){
      try{
        // are we ready to exit?
        if (reallyExit ==false)
          destroyApp(false);
          else{
            destroyApp(true);
            notifyDestroyed();
          }
      }
      catch (MIDletStateChangeException excep){
        reallyExit = true; // second time we will really exit
        System.out.println(excep.getMessage());
        System.out.println("Back to active state");
      }
    }
  }
}