Memperoleh tipe media dan protokol yang didukung, pada JAVA ( J2ME )

import javax.microedition.midlet.*;import javax.microedition.lcdui.*;
import javax.microedition.media.*;

public class TipeMediaProtokol extends MIDlet
  implements CommandListener {
   
  private Display display;
  private Form form;
  private StringBuffer sb;
  private final Command cmdKeluar =
    new Command("Keluar", Command.EXIT, 1);
 
  public TipeMediaProtokol() {
    display = Display.getDisplay(this);
   
    form = new Form("Tipe Media & Protokol");
       
    form.addCommand(cmdKeluar);
    form.setCommandListener(this);   
  }
   
  public void startApp() {
    sb = getMediaContentsAndProtocols();
    StringItem si = new StringItem(null, sb.toString());
    form.append(si);
    display.setCurrent(form);
  }
   
  public void pauseApp() {
  }
   
  public void destroyApp(boolean unconditional) {
  }
   
  public void commandAction(Command c, Displayable s) {
    if (c == cmdKeluar) {
      destroyApp(false);
      notifyDestroyed();
    }   
  }
 
  private StringBuffer getMediaContentsAndProtocols() {
    StringBuffer temp = new StringBuffer();
    String[] tipeMedia = Manager.getSupportedContentTypes(null);
    for (int i=0; i<tipeMedia.length; i++) {
      String[] protokol =
        Manager.getSupportedProtocols(tipeMedia[i]);
      for (int j=0; j<protokol.length; j++) {
        temp.append(tipeMedia[i] + ":" + protokol[j] + "\n");
      }
    }
    return temp;
  }
}