Calendar in J2ME application [Source Code]

import javax.microedition.midlet.MIDlet;
import javax.microedition.lcdui.*;
import java.util.Calendar;
import java.util.Date;

public class CalendarMIDlet extends MIDlet implements CommandListener {

private Display display;
private Form form;
private Command exitCommand;

public void startApp() {
display = Display.getDisplay(this);
form = new Form("");
exitCommand = new Command("Exit", Command.EXIT, 0);
form.addCommand(exitCommand);
form.setCommandListener(this);
display.setCurrent(form);

Calendar cal = Calendar.getInstance();
Date date = new Date();
cal.setTime(date);
int month = cal.get(Calendar.MONTH);
int day = cal.get(Calendar.DAY_OF_MONTH);
System.out.println("Day is " + day + ", month is " + month);

final long MILLIS_PER_DAY = 24 * 60 * 60 * 1000L;
long offset = date.getTime();
offset += 20 * MILLIS_PER_DAY;
date.setTime(offset);
cal.setTime(date);

month = cal.get(Calendar.MONTH);
day = cal.get(Calendar.DAY_OF_MONTH);
System.out.println("In 20 days time, day will " + day + ", month will be " + month);
System.out.println(cal);
}

protected void pauseApp() {
}

protected void destroyApp(boolean arg0) {
}

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