trouble with executing applets!!!! pl help

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  • prashfire2000
    New Member
    • Jan 2008
    • 2

    trouble with executing applets!!!! pl help

    This is a code i wrote to play a video file usin JMF..... the applet gets started but not initialized.... . is the code correct or is there any mistake?????? please help me out as soon as u can......need to get this right as soon as i can.........

    the input goes through the varialbles url and url2------ location of the file

    this is the error i get
    java.lang.NoCla ssDefFoundError : javax/media/ControllerListe ner
    at java.lang.Class Loader.defineCl ass1(Native Method)
    at java.lang.Class Loader.defineCl ass(ClassLoader .java:620)
    at java.security.S ecureClassLoade r.defineClass(S ecureClassLoade r.java:12
    4)
    at sun.applet.Appl etClassLoader.f indClass(Applet ClassLoader.jav a:162)
    at java.lang.Class Loader.loadClas s(ClassLoader.j ava:306)
    at sun.applet.Appl etClassLoader.l oadClass(Applet ClassLoader.jav a:118)
    at java.lang.Class Loader.loadClas s(ClassLoader.j ava:251)
    at sun.applet.Appl etClassLoader.l oadCode(AppletC lassLoader.java :577)
    at sun.applet.Appl etPanel.createA pplet(AppletPan el.java:710)
    at sun.applet.Appl etPanel.runLoad er(AppletPanel. java:639)
    at sun.applet.Appl etPanel.run(App letPanel.java:3 19)
    at java.lang.Threa d.run(Thread.ja va:595)


    [CODE=Java]
    import javax.swing.*;
    import javax.media.*;
    import java.awt.*;
    import javax.media.pro tocol.*;
    import java.net.*;
    import java.util.*;
    //import com.sun.media.u til.JMFSecurity ;
    /*
    <APPLET CODE = VideoApplet.cla ss WIDTH = 442 HEIGHT = 317 >
    <PARAM NAME = CODE VALUE = VideoApplet.cla ss >
    <PARAM NAME="type" VALUE="applicat ion/x-java-applet;version= 1.1">
    <PARAM NAME = url VALUE ="FishTank.avi" >
    <PARAM NAME = url2 VALUE ="FishTank2.avi ">
    </APPLET>
    */
    public class VideoApplet extends JApplet implements ControllerListe ner
    {
    // component in which video is playing
    Component visualComponent = null;
    // controls gain, position, start, stop
    Component controlComponen t = null;
    // displays progress during download
    Component progressBar = null;
    boolean firstTime = true;
    long CachingSize = 0L;
    int controlPanelHei ght = 0;
    int videoWidth = 0;
    int videoHeight = 0;
    String url;
    MediaLocator locator;
    Player player;
    boolean f=false;
    JPanel panel= new JPanel();
    HashMap urlmap=new HashMap();
    int loopcnt,looptot ;
    public void init(){

    looptot=0;
    String urls=getParamet er("url");
    if(urls!=null){
    if(urls.indexOf (",")!=-1){
    StringTokenizer tokens=new StringTokenizer (urls,",");
    while(tokens.ha sMoreTokens()){
    String url=tokens.next Token();
    looptot++;
    System.out.prin tln(" values : "+url+" : "+looptot);
    urlmap.put(Stri ng.valueOf(loop tot),url);
    }
    }
    else{
    looptot=1;
    urlmap.put(Stri ng.valueOf(1),u rls);
    }
    }
    loopcnt=0;

    init2();
    }
    public void init2(){
    if(looptot<=0)
    return;
    loopcnt++;
    if(loopcnt>loop tot)
    loopcnt=1;
    try {
    url=(String)url map.get(String. valueOf(loopcnt ));
    URL url2 = new URL(url);
    url = url2.toExternal Form();
    System.out.prin tln(" urlss :: "+url);
    locator = new MediaLocator(ur l);
    player = Manager.createR ealizedPlayer(l ocator);
    player.addContr ollerListener(t his);
    panel.add(playe r.getVisualComp onent());
    panel.add(playe r.getControlPan elComponent());
    getContentPane( ).add(panel);
    //getContentPane( ).validate();
    player.start();
    } catch (Exception e) {
    System.out.prin tln("ERROR CREATING MEDIALOCATOR"+e );
    System.exit(-1);
    }
    }
    public void start() {
    System.out.prin tln("Applet.sta rt()11 is called");
    // Call start() to prefetch and start the player.
    if (player != null)
    player.start();
    }
    /**
    * Stop media file playback and release resource before
    * leaving the page.
    */
    public void stop() {
    System.out.prin tln("Applet.sto p() is called");
    if (player != null) {
    player.stop();
    player.dealloca te();
    }
    }
    public void destroy() {
    System.out.prin tln("Applet.des troy() is called");
    player.close();
    }
    public synchronized void controllerUpdat e(ControllerEve nt event) {
    System.out.prin tln("Event called");
    // If we're getting messages from a dead player,
    // just leave
    if (player == null)
    return;

    if (event instanceof EndOfMediaEvent ) {
    stop();
    destroy();

    //getContentPane( ).removeAll();
    System.out.prin tln("dfdsaf1");
    panel.removeAll ();
    //panel.setVisibl e(false);
    System.out.prin tln("test2");
    init2();
    getContentPane( ).validate();
    System.out.prin tln("test3");
    //getContentPane( ).removeAll();
    System.out.prin tln("EndOfMedia Event5 called");
    }


    // When the player is Realized, get the visual
    // and control components and add them to the Applet
    /*if (event instanceof RealizeComplete Event) {
    if (progressBar != null) {
    panel.remove(pr ogressBar);
    progressBar = null;
    }

    int width = getWidth();//520;
    int height = 0;
    if (controlCompone nt == null)
    if (( controlComponen t =
    player.getContr olPanelComponen t()) != null) {

    controlPanelHei ght = controlComponen t.getPreferredS ize().height;
    panel.add(contr olComponent);
    height += controlPanelHei ght;
    }
    if (visualComponen t == null)
    if (( visualComponent =
    player.getVisua lComponent())!= null) {
    panel.add(visua lComponent);
    Dimension videoSize = visualComponent .getPreferredSi ze();
    videoWidth = videoSize.width ;
    videoHeight = videoSize.heigh t;
    width = videoWidth;
    height += videoHeight;
    visualComponent .setBounds(0, 0, videoWidth, videoHeight);
    }

    panel.setBounds (0, 0, width, height);
    if (controlCompone nt != null) {
    controlComponen t.setBounds(0, videoHeight,
    width, controlPanelHei ght);
    controlComponen t.invalidate();
    }
    //player.start();

    } else if (event instanceof CachingControlE vent) {
    if (player.getStat e() > Controller.Real izing)
    return;
    // Put a progress bar up when downloading starts,
    // take it down when downloading ends.
    CachingControlE vent e = (CachingControl Event) event;
    CachingControl cc = e.getCachingCon trol();

    // Add the bar if not already there ...
    if (progressBar == null) {
    if ((progressBar = cc.getControlCo mponent()) != null) {
    panel.add(progr essBar);
    panel.setSize(p rogressBar.getP referredSize()) ;
    validate();
    }
    }
    } else if (event instanceof EndOfMediaEvent ) {


    System.out.prin tln("Applet.End OfMediaEvent4() called");
    ///////////////////////////


    } else if (event instanceof ControllerError Event) {
    // Tell TypicalPlayerAp plet.start() to call it a day
    System.out.prin tln("Applet errorevent");
    player = null;
    Fatal(((Control lerErrorEvent)e vent).getMessag e());
    } else if (event instanceof ControllerClose dEvent) {
    panel.removeAll ();
    }*/


    }

    void Fatal (String s) {
    // Applications will make various choices about what
    // to do here. We print a message
    System.err.prin tln("FATAL ERROR: " + s);
    throw new Error(s); // Invoke the uncaught exception
    // handler System.exit() is another
    // choice.

    }
    }
    [/CODE]
    Last edited by BigDaddyLH; Jan 30 '08, 04:26 PM. Reason: removed overuse of bold
  • BigDaddyLH
    Recognized Expert Top Contributor
    • Dec 2007
    • 1216

    #2
    It seems the java plugin doesn't have access to package javax.media. That's not part of the J2SE, right? How do you expect a client machine to access this package?

    Comment

    • prashfire2000
      New Member
      • Jan 2008
      • 2

      #3
      Originally posted by BigDaddyLH
      It seems the java plugin doesn't have access to package javax.media. That's not part of the J2SE, right? How do you expect a client machine to access this package?
      i've installed JMF... the code i downloaded from ine internet works...... but not mine..... i wanna make mine work....

      Comment

      • BigDaddyLH
        Recognized Expert Top Contributor
        • Dec 2007
        • 1216

        #4
        Originally posted by prashfire2000
        i've installed JMF... the code i downloaded from ine internet works...... but not mine..... i wanna make mine work....
        The problems are arising because you are writing an applet. Why not write your example as a standalone application?

        Comment

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