Add CommandListener to TextBox : CommandListener « J2ME « Java Tutorial

1. Java Tutorial
2. J2ME
3. CommandListener

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 CommandQuitGoodbyeWorld extends MIDlet implements CommandListener {
  private Display display;

  private TextBox textBox;

  private Command quitCommand;

  public void startApp() {
    display = Display.getDisplay(this);
    quitCommand = new Command("Quit", Command.SCREEN, 1);
    textBox = new TextBox("Goodbye World", "My second MIDlet", 40, 0);
    textBox.addCommand(quitCommand);
    textBox.setCommandListener(this);
    display.setCurrent(textBox);
  }

  public void pauseApp() {
  }

  public void destroyApp(boolean unconditional) {
  }

  public void commandAction(Command choice, Displayable displayable) {
    if (choice == quitCommand) {
      destroyApp(false);
      notifyDestroyed();
    }
  }
}

31.18.CommandListener
	31.18.1.	Use CommandListener
	31.18.2.	Add CommandListener to TextBox