Java tutorial
import java.util.Timer; import java.util.TimerTask; import javax.microedition.lcdui.Command; import javax.microedition.lcdui.CommandListener; import javax.microedition.lcdui.Display; import javax.microedition.lcdui.Displayable; import javax.microedition.lcdui.TextBox; import javax.microedition.midlet.MIDlet; public class SimpleTimerCancelMIDlet extends MIDlet implements CommandListener { private Command exitCommand = new Command("Exit", Command.EXIT, 1); private Command scheduleCommand = new Command("schedule", Command.SCREEN, 1); private TextBox aTextBox = new TextBox("Setting", "Content", 20, 0); public static String aMessage = ""; Display display; private Timer aTimer; private SimpleTimerTask aTimerTask; public SimpleTimerCancelMIDlet() { Display display = Display.getDisplay(this); } public void startApp() { aTextBox.addCommand(exitCommand); aTextBox.addCommand(scheduleCommand); aTextBox.setCommandListener(this); display.setCurrent(aTextBox); } public void pauseApp() { } public void destroyApp(boolean unconditional) { } public void commandAction(Command c, Displayable s) { if (c == scheduleCommand) { aTimer = new Timer(); aTimerTask = new SimpleTimerTask(); aTimer.schedule(aTimerTask, 500); aTextBox.setString(aMessage); } else if (c == exitCommand) { destroyApp(false); notifyDestroyed(); } } } class SimpleTimerTask extends TimerTask { public final void run() { cancel(); } }