At this time I’ll give you source code for midlet to playing 3gp/mp4 with jsr134, here is source code:

import java.util.Hashtable;

import java.util.Enumeration;

import javax.microedition.lcdui.Item;

import javax.microedition.lcdui.List;

import javax.microedition.lcdui.Form;

import javax.microedition.midlet.MIDlet;

import javax.microedition.lcdui.Display;

import javax.microedition.lcdui.Command;

import javax.microedition.lcdui.Displayable;

import javax.microedition.lcdui.CommandListener;

import javax.microedition.media.Player;

import javax.microedition.media.Control;

import javax.microedition.media.Manager;

import javax.microedition.media.PlayerListener;

import javax.microedition.media.control.VideoControl;

public class MediaMIDlet extends MIDlet

implements CommandListener, PlayerListener {

private Display display;

private List itemList;

private Form form;

private Command stopCommand;

private Command pauseCommand;

private Command startCommand;

private Hashtable items;

private Hashtable itemsInfo;

private Player player;

public MediaMIDlet() {

  display = Display.getDisplay(this);

  // creates an item list to let you select multimedia files to play

  itemList = new List("Select an item to play", List.IMPLICIT);

  // stop, pause and restart commands

  stopCommand = new Command("Stop", Command.STOP, 1);

  pauseCommand = new Command("Pause", Command.ITEM, 1);

  startCommand = new Command("Start", Command.ITEM, 1);

  // a form to display when items are being played

  form = new Form("Playing media");

  // the form acts as the interface to stop and pause the media

  form.addCommand(stopCommand);

  form.addCommand(pauseCommand);

  form.setCommandListener(this);

  // create a hashtable of items

  items = new Hashtable();

  // and a hashtable to hold information about them

  itemsInfo = new Hashtable();

  // and populate both of them

  items.put("Siren from jar", "file://siren.wav");

  itemsInfo.put("Siren from jar", "audio/x-wav");

  items.put("Promo Video from jar", "file://promo.mpg");

  itemsInfo.put("Promo Video from jar", "video/mpeg");

      items.put("Video 3GP from jar", "file://l23.3gp");

  itemsInfo.put("Video 3GP from jar", "video/3gpp");

}

public void startApp() {

 // when MIDlet is started, use the item list to display elements

 for(Enumeration en = items.keys(); en.hasMoreElements();) {

    itemList.append((String)en.nextElement(), null);

 }

  itemList.setCommandListener(this);

 // show the list when MIDlet is started

 display.setCurrent(itemList);

}

public void pauseApp() {

  // pause the player

 try {

   if(player != null) player.stop();

 } catch(Exception e) {}

}

public void destroyApp(boolean unconditional) {

 if(player != null) player.close(); // close the player

}

public void commandAction(Command command, Displayable disp) {

 // generic command handler

 // if list is displayed, the user wants to play the item

 if(disp instanceof List) {

  List list = ((List)disp);

  String key = list.getString(list.getSelectedIndex());

  // try and play the selected file

  try {

   playMedia((String)items.get(key), key);

  } catch (Exception e) {

   System.err.println("Unable to play: " + e);

   e.printStackTrace();

  }

 } else if(disp instanceof Form) {

  // if showing form, means the media is being played

  // and the user is trying to stop or pause the player

  try {

   if(command == stopCommand) { // if stopping the media play

    player.close(); // close the player

    display.setCurrent(itemList); // redisplay the list of media

    form.removeCommand(startCommand); // remove the start command

    form.addCommand(pauseCommand); // add the pause command

   } else if(command == pauseCommand) { // if pausing

    player.stop(); // pauses the media, note that it is called stop

    form.removeCommand(pauseCommand); // remove the pause command

    form.addCommand(startCommand); // add the start (restart) command

   } else if(command == startCommand) { // if restarting

    player.start(); // starts from where the last pause was called

    form.removeCommand(startCommand);

    form.addCommand(pauseCommand);

   }

  } catch(Exception e) {

   System.err.println(e);

  }

 }

}

/* Creates Player and plays media for the first time */

private void playMedia(String locator, String key) throws Exception {

 // locate the actual file, we are only dealing

 // with file based media here

 String file = locator.substring(

  locator.indexOf("file://") + 6,

  locator.length());

 // create the player

 // loading it as a resource and using information about it

 // from the itemsInfo hashtable

 player =

  Manager.createPlayer(

   getClass().getResourceAsStream(file), (String)itemsInfo.get(key));

 // a listener to handle player events like starting, closing etc

 player.addPlayerListener(this);

 player.setLoopCount(-1); // play indefinitely

 player.prefetch(); // prefetch

 player.realize(); // realize

 player.start(); // and start

}

/* Handle player events */

public void playerUpdate(Player player, String event, Object eventData) {

 // if the event is that the player has started, show the form

 // but only if the event data indicates that the event relates to newly

 // stated player, as the STARTED event is fired even if a player is

 // restarted. Note that eventData indicates the time at which the start

 // event is fired.

 if(event.equals(PlayerListener.STARTED) &&

   new Long(0L).equals((Long)eventData)) {

  // see if we can show a video control, depending on whether the media

  // is a video or not

  VideoControl vc = null;

  if((vc = (VideoControl)player.getControl("VideoControl")) != null) {

   Item videoDisp =

     (Item)vc.initDisplayMode(vc.USE_GUI_PRIMITIVE, null);

   form.append(videoDisp);

  }

  display.setCurrent(form);

 } else if(event.equals(PlayerListener.CLOSED)) {

  form.deleteAll(); // clears the form of any previous controls

 }

}

}

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