HolaMidlet.java

import javax.microedition.midlet.MIDlet;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.TextBox;

public class HolaMidlet extends MIDlet implements CommandListener {
  private Display display;
  private Command cmdExit;
  private TextBox tbxMain;

  // constructor
  public HolaMidlet () {
    display = Display.getDisplay(this);
    cmdExit = new Command(“Exit”,
    Command.EXIT, 1);
    tbxMain = new TextBox( “HelloMidlet”, “Hola mundo movil”, 50, 0);
    tbxMain.addCommand(cmdExit);
    tbxMain.setCommandListener(this);
  }

  public void startApp() {
    display.setCurrent(tbxMain);
  }

  public void pauseApp(){}
  
  public void destroyApp(boolean unconditional){}

  public void commandAction(Command c, Displayable s) {
    if (c == cmdExit) {
      destroyApp(false);
      notifyDestroyed();
    }
  }
}