How to record an audio using j2me

Question

hello i'm new to this.
i have some sample code to record audio in wireless toolkit
but i got error in "setOutputStream()"
this is my code.any one help me....................
code :-
====
try
// create the Player object using amr encoding
p = Manager.createPlayer("capture://audio?encoding=pcm");
p.realize();
// get the RecordControl over this Player
RecordControl rc = (RecordControl)p.getControl("RecordControl");
// create an OutputStream which the RecordControl will use
// to write write the recorded data.
ByteArrayOutputStream output = new ByteArrayOutputStream();
rc.setRecordStream(output);
// start the recording
rc.startRecord();
p.start();
messageItem.setText("recording...");
Thread.currentThread().sleep(5000); // record for 5 seconds
messageItem.setText("done!");
rc.commit();
// save the recordedData in a byte array
recordedSoundArray = output.toByteArray();
// close the player
p.close();
} //try
catch (IOException ioe)
errorItem.setLabel("Error");
errorItem.setText(ioe.toString());
catch (MediaException me)
errorItem.setLabel("Error");
errorItem.setText(me.toString());
catch (InterruptedException ie)
errorItem.setLabel("Error");
errorItem.setText(ie.toString());
}//if

Answer 1

hai all,
im new here ..i have problem in recording audio using j2me..my code is as below
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.media.control.RecordControl;
import javax.microedition.media.Manager;
import javax.microedition.media.MediaException;
import javax.microedition.media.Player;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
public class recordMidlet extends MIDlet implements CommandListener
private Form init = new Form("info");
private Command rec = new Command("rec",Command.OK, 1),
stop = new Command("stop",Command.STOP, 0),
exit = new Command("exit",Command.EXIT, 0);
private byte[] recordedSoundArray;
private Player p;
private RecordControl rc;
private ByteArrayOutputStream output;
public void startApp()
init.addCommand(rec);
init.addCommand(stop);
//init.addCommand(exit);
init.setCommandListener(this);
Display.getDisplay(this).setCurrent(init);
public void pauseApp()
public void destroyApp(boolean unconditional)
public void commandAction(Command com, Displayable dis)
if(com == exit)
notifyDestroyed();
else if(com == stop)
init.removeCommand(stop);
init.addCommand(exit);
try
init.append("finish record... starting playback\n\n");
rc.stopRecord();
rc.commit();
p.stop();
p.close();
init.append("playing...\n");
recordedSoundArray = output.toByteArray();
init.append("recorded sound = " +String.valueOf(recordedSoundArray.length)+"\n\n");
ByteArrayInputStream recordedInputStream = new ByteArrayInputStream(recordedSoundArray);
Player p2 = Manager.createPlayer(recordedInputStream,"audio/x-wav");
p2.prefetch();
p2.start();
//init.append("finish playing...");
catch (Exception e) {
init.append("stop command: "+e.toString());
else if(com == rec) {
try {
init.append("record voice ...\n\n");
// Create a Player that captures live audio.
p = Manager.createPlayer("capture://audio?encoding=pcm&rate=8000&bits=16");
p.realize();
// Get the RecordControl, set the record stream,
rc = (RecordControl)p.getControl("RecordControl");
output = new ByteArrayOutputStream();
rc.setRecordStream(output);
rc.startRecord();
p.start();
} catch (Exception ioe)
init.append(ioe.toString());
i get error from ktoolbar window..
Warning: To avoid potential deadlock, operations that may block, such as
networking, should be performed in a different thread than the
commandAction() handler.
Emulator is not working after that..and it jus shows text
" RecordMidlet wants to record an audio clip.is it ok to record? then the emulator hangs..
could someone help me to solve this problem..is there any setting problems in j2me wireless toolkit ?
im using J2me wireless toolkit 2.5 for CLDC beta 2 .
thanks to all.