Can't appear buttons. help!!!

Question

hellow, i'm pretty new 'bout JMF & so stupid with it xD
i've a project to make a media player with JMF, i using netbeans IDE 5.5
here's th list:
====================================================
import java.io.File;
import java.io.IOException;
import java.awt.Component;
import java.awt.*;
import java.net.URL;
import java.net.MalformedURLException;
import javax.media.*;
import javax.sound.sampled.*;
public class kanonplayer extends javax.swing.JFrame {
/** Creates new form kanonplayer */
public kanonplayer() {
initComponents();
public void btnOpen() {
javax.swing.JFileChooser jFileChooser = new javax.swing.JFileChooser();
int buka = jFileChooser.showOpenDialog(null);
if (buka == jFileChooser.APPROVE_OPTION) {
java.net.URL fileURL = null;
try {
fileURL = jFileChooser.getSelectedFile().toURL();
catch (java.net.MalformedURLException mfue) {
System.err.println("Terjadi Exception berupa: MalformedURLException!");
if (fileURL != null)
MediaPanel mediaPanel = new MediaPanel(fileURL);
this.getContentPane().add(mediaPanel);
this.setSize(200, 200);
this.setVisible(true);
this.setResizable(true);
class MediaPanel extends javax.swing.JPanel {
public MediaPanel(java.net.URL mediaURL) {
setLayout(new BorderLayout());
javax.media.Manager.setHint(javax.media.Manager.LIGHTWEIGHT_RENDERER, this);
try {
javax.media.Player mediaPlayer = javax.media.Manager.createRealizedPlayer(mediaURL);
java.awt.Component video = mediaPlayer.getVisualComponent();
java.awt.Component controls = mediaPlayer.getControlPanelComponent();
if ( video != null )
add( mediaPlayer.getVisualComponent(), BorderLayout.CENTER );
if ( controls != null )
add( mediaPlayer.getControlPanelComponent(), BorderLayout.SOUTH );
mediaPlayer.start();
catch ( javax.media.NoPlayerException noPlayerException )
System.err.println( "Terjadi Exception: NoPlayerException" );
catch ( javax.media.CannotRealizeException cannotRealizeException ) {
System.err.println( "Terjadi Exception: CannotRealizeException" );
catch ( java.io.IOException iOException ) {
System.err.println( "Terjadi Exception: iOException" );
public class JavaSoundDetector {
boolean supported = false;
public JavaSoundDetector() {
     try {
     DataLine.Info info = new DataLine.Info(TargetDataLine.class,
                              null,
                              AudioSystem.NOT_SPECIFIED);
     supported = AudioSystem.isLineSupported(info);
     } catch (Exception ex) {
     supported = false;
public boolean isSupported() {
     return supported;
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
// <editor-fold defaultstate="collapsed" desc=" Generated Code ">
private void initComponents() {
jButton1 = new javax.swing.JButton();
jToolBar1 = new javax.swing.JToolBar();
jPanel1 = new javax.swing.JPanel();
jMenuBar1 = new javax.swing.JMenuBar();
jMenu1 = new javax.swing.JMenu();
jMenuItem1 = new javax.swing.JMenuItem();
jSeparator1 = new javax.swing.JSeparator();
jMenuItem2 = new javax.swing.JMenuItem();
jButton1.setText("btnOpen");
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle("kanonplayer");
setCursor(new java.awt.Cursor(java.awt.Cursor.CROSSHAIR_CURSOR));
jPanel1.setLayout(new java.awt.BorderLayout());
jMenu1.setText("File");
jMenu1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jMenu1ActionPerformed(evt);
jMenuItem1.setMnemonic('O');
jMenuItem1.setText("Open");
jMenuItem1.setAutoscrolls(true);
jMenuItem1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jMenuItem1ActionPerformed(evt);
jMenu1.add(jMenuItem1);
jMenu1.add(jSeparator1);
jMenuItem2.setMnemonic('E');
jMenuItem2.setText("Exit");
jMenuItem2.setAutoscrolls(true);
jMenuItem2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jMenuItem2ActionPerformed(evt);
jMenu1.add(jMenuItem2);
jMenuBar1.add(jMenu1);
setJMenuBar(jMenuBar1);
org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jToolBar1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 179, Short.MAX_VALUE)
.add(jPanel1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 179, Short.MAX_VALUE)
layout.setVerticalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.add(jToolBar1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 25, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.addContainerGap(117, Short.MAX_VALUE))
.add(jPanel1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 142, Short.MAX_VALUE)
pack();
}// </editor-fold>
private void jMenu1ActionPerformed(java.awt.event.ActionEvent evt) {                                      
// TODO add your handling code here:
private void jMenuItem1ActionPerformed(java.awt.event.ActionEvent evt) {                                          
// TODO add your handling code here:
btnOpen();
private void jMenuItem2ActionPerformed(java.awt.event.ActionEvent evt) {                                          
// TODO add your handling code here:
System.exit (1);
* @param args the command line arguments
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new kanonplayer().setVisible(true);
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JMenu jMenu1;
private javax.swing.JMenuBar jMenuBar1;
private javax.swing.JMenuItem jMenuItem1;
private javax.swing.JMenuItem jMenuItem2;
private javax.swing.JPanel jPanel1;
private javax.swing.JSeparator jSeparator1;
private javax.swing.JToolBar jToolBar1;
// End of variables declaration
====================================================
my problems are can't compile "javac" to command prompt.
-i run my project to netbeans is appears & i can hear the sounds of the music mp3.. but start, pause, & volume buttons don't appear.
<center><img src="
http://farm2.static.flickr.com/1144/1389752653_4b0d436eef_o.jpg"/></center>
can you tell me why? & do i've to adding some source code? so what the source code is? pliz.
-how to could appear a video? ^^
THANX before, i hope you understand what i say =]
-okiedokie-

Answer 1

I don't have JMF or netbeans so commented out things that need them. The gui works now.
import java.io.File;
import java.io.IOException;
import java.awt.Component;
import java.awt.*;
import java.net.URL;
import java.net.MalformedURLException;
import javax.swing.*;
//import javax.media.*;
import javax.sound.sampled.*;
//import org.jdesktop.layout.GroupLayout;
public class KP extends JFrame {
    MediaPanel mediaPanel;
    public KP() {
        initComponents();
        mediaPanel = new MediaPanel();
        this.getContentPane().add(mediaPanel);
        this.setSize(200, 200);
        this.setVisible(true);
        //this.setResizable(true);
    public void btnOpen() {
        JFileChooser jFileChooser = new JFileChooser();
        int buka = jFileChooser.showOpenDialog(null);
        if (buka == jFileChooser.APPROVE_OPTION) {
            URL fileURL = null;
            try {
                fileURL = jFileChooser.getSelectedFile().toURL();
            } catch (MalformedURLException mfue) {
                System.err.println("Terjadi Exception berupa: MalformedURLException!");
            if (fileURL != null) {
                mediaPanel.setURL(fileURL);
    class MediaPanel extends JPanel {
        public MediaPanel() {
            setLayout(new BorderLayout());
//            Manager.setHint(Manager.LIGHTWEIGHT_RENDERER, this);
        public void setURL(URL mediaURL) {
            try {
                Player mediaPlayer = Manager.createRealizedPlayer(mediaURL);
                Component video = mediaPlayer.getVisualComponent();
                Component controls = mediaPlayer.getControlPanelComponent();
                if ( video != null )
                    add( mediaPlayer.getVisualComponent(), BorderLayout.CENTER );
                if ( controls != null )
                    add( mediaPlayer.getControlPanelComponent(), BorderLayout.SOUTH );
                mediaPlayer.start();
            } catch ( NoPlayerException noPlayerException ) {
                System.err.println( "Terjadi Exception: NoPlayerException" );
            } catch ( CannotRealizeException cannotRealizeException ) {
                System.err.println( "Terjadi Exception: CannotRealizeException" );
            } catch ( IOException iOException ) {
                System.err.println( "Terjadi Exception: iOException" );
    public class JavaSoundDetector {
        boolean supported = false;
        public JavaSoundDetector() {
            try {
                DataLine.Info info = new DataLine.Info(TargetDataLine.class,null,
                                                       AudioSystem.NOT_SPECIFIED);
                supported = AudioSystem.isLineSupported(info);
            } catch (Exception ex) {
                supported = false;
        public boolean isSupported() { return supported; }
    private void initComponents() {
        // ToolBar
        jButton1 = new javax.swing.JButton();
        jButton1.setText("btnOpen");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItem1ActionPerformed(evt);
        jToolBar1 = new javax.swing.JToolBar();
        jToolBar1.add(jButton1);
        // MenuBar
        jPanel1 = new javax.swing.JPanel();
        jMenuBar1 = new javax.swing.JMenuBar();
        jMenu1 = new javax.swing.JMenu();
        jMenuItem1 = new javax.swing.JMenuItem();
        jSeparator1 = new javax.swing.JSeparator();
        jMenuItem2 = new javax.swing.JMenuItem();
        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("kanonplayer");
        setCursor(new java.awt.Cursor(java.awt.Cursor.CROSSHAIR_CURSOR));
//        jPanel1.setLayout(new java.awt.BorderLayout());
        jMenu1.setText("File");
        jMenu1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenu1ActionPerformed(evt);
        jMenuItem1.setMnemonic('O');
        jMenuItem1.setText("Open");
        jMenuItem1.setAutoscrolls(true);
        jMenuItem1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItem1ActionPerformed(evt);
        jMenu1.add(jMenuItem1);
        jMenu1.add(jSeparator1);
        jMenuItem2.setMnemonic('E');
        jMenuItem2.setText("Exit");
        jMenuItem2.setAutoscrolls(true);
        jMenuItem2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItem2ActionPerformed(evt);
        jMenu1.add(jMenuItem2);
        jMenuBar1.add(jMenu1);
        setJMenuBar(jMenuBar1);
        getContentPane().add(jToolBar1, BorderLayout.NORTH);
        GroupLayout layout = new GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(layout.createParallelGroup(GroupLayout.LEADING)
              .add(jToolBar1, GroupLayout.DEFAULT_SIZE, 179, Short.MAX_VALUE)
              .add(jPanel1, GroupLayout.DEFAULT_SIZE, 179, Short.MAX_VALUE)
        layout.setVerticalGroup(layout.createParallelGroup(GroupLayout.LEADING)
              .add(layout.createSequentialGroup()
              .add(jToolBar1, GroupLayout.PREFERRED_SIZE, 25, GroupLayout.PREFERRED_SIZE)
              .addContainerGap(117, Short.MAX_VALUE))
              .add(jPanel1, GroupLayout.DEFAULT_SIZE, 142, Short.MAX_VALUE)
        pack();
    private void jMenu1ActionPerformed(java.awt.event.ActionEvent evt) {
        // TODO add your handling code here:
    private void jMenuItem1ActionPerformed(java.awt.event.ActionEvent evt) {
        // TODO add your handling code here:
        btnOpen();
    private void jMenuItem2ActionPerformed(java.awt.event.ActionEvent evt) {
        // TODO add your handling code here:
        System.exit (1);
    public static void main(String args[]) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                new KP().setVisible(true);
    // Variables declaration - do not modify
    private javax.swing.JButton jButton1;
    private javax.swing.JMenu jMenu1;
    private javax.swing.JMenuBar jMenuBar1;
    private javax.swing.JMenuItem jMenuItem1;
    private javax.swing.JMenuItem jMenuItem2;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JSeparator jSeparator1;
    private javax.swing.JToolBar jToolBar1;
    // End of variables declaration
}