Java Programing laungage

/*
 * Save as a addDataField.java
 */
package r4r.Mobile.Basic;
import java.util.Date;
import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
/**
 * @author R4R
 */
public class addDataField extends MIDlet implements CommandListener {
 				
 /* -- private field -- */
 private Display display;
 private Form form;
 private DateField dateField;
 private Command exit;
 
 public addDataField() {
 display = Display.getDisplay(this);
 form = new Form("Add Data Field into form");
 dateField = new DateField("Set Current Date", DateField.DATE, null);
 dateField.setDate(new Date()); // set current data into dataField
 exit = new Command("EXIT", Command.EXIT, 1);
 
 // add field into form 
 form.append(dateField);
 form.addCommand(exit);
 form.setCommandListener(this);
 }
 
 public void startApp() {
 display.setCurrent(form);
 }
 public void pauseApp() {
 }
 
 public void destroyApp(boolean unconditional) {
 }
 
 public void commandAction(Command c, Displayable d) {
 if (c== exit) {
 destroyApp(true);
 notifyDestroyed();
 }
 }
}