怎样使用MMAPI录音

try {
    // Create a Player that captures live audio.
    Player p = Manager.createPlayer("capture://audio");
    p.realize();
    // Get the RecordControl, set the record stream,
    // start the Player and record for 5 seconds.
    RecordControl rc = (RecordControl)p.getControl("RecordControl");
    ByteArrayOutputStream output = new ByteArrayOutputStream();
    rc.setRecordStream(output);
    rc.startRecord();
    p.start();
    Thread.currentThread().sleep(5000);
    rc.commit();
    p.close();
 } catch (IOException ioe) {
 } catch (MediaException me) {
 } catch (InterruptedException ie) { }