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LWP » Foros » Java » Tengo un problema al compilar mi programa,necesito ayuda

Java - Tengo un problema al compilar mi programa,necesito ayuda

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Tengo un problema al compilar mi programa,necesito ayuda

Publicado por MatRt (1 intervención) el 27/09/2021 02:31:29
Estoy haciendo un reproductor de musica en java netbeans utilizando jlayer,tengo un problema al compilar espero que me puedan dar una solucion a este dilema.

El problema:
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Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
    at javax.swing.ImageIcon.<init>(ImageIcon.java:217)
    at MainPackage.Windows.initComponents(Windows.java:275)
    at MainPackage.Windows.<init>(Windows.java:27)
    at MainPackage.Windows$14.run(Windows.java:505)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
    at java.awt.EventQueue.access$500(EventQueue.java:97)
    at java.awt.EventQueue$3.run(EventQueue.java:709)
    at java.awt.EventQueue$3.run(EventQueue.java:703)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)

Windows.java :
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525
package MainPackage;
 
import java.io.*;
import javax.swing.DefaultListModel;
import java.util.ArrayList;
import javax.swing.JFrame;
import javax.swing.UIManager;
 
public class Windows extends javax.swing.JFrame {
 
    ReproduceAudio pl=new ReproduceAudio();
 
    ArrayList updateList= new ArrayList();
 
    javazoom.jl.player.Player player;
    File simpan;
 
 
    /**
     * Creates new form PlayerMemo
     */
    public Windows() {
        initComponents();
        this.setLocationRelativeTo(null);
    }
 
 
    void updateList(){
 
        updateList=pl.getListSong();
        DefaultListModel model=new DefaultListModel();
 
        for(int i=0;i<updateList.size();i++)
            {
                int j=1+1;
                model.add(i,j + " | " + ((File) updateList.get(i)).getName());
 
 
            }
        jList1.setModel(model);
 
    }
 
    // panel de control
 
    void add(){
 
        pl.add(this);
        updateList();
    }
 
    void remove(){
 
        try {
              int memoherdez=jList1.getLeadSelectionIndex();
              pl.ls.remove(memoherdez);
              updateList();
 
        } catch (Exception e) {
        }
 
    }
 
     void up(){
 
         try {
                int s1=jList1.getLeadSelectionIndex();
                simpan=(File)pl.ls.get(s1);
                pl.ls.remove(s1);
                pl.ls.add(s1-1,simpan);
                updateList();
                jList1.setSelectedIndex(s1-1);
 
         } catch (Exception e) {
         }
 
    }
 
      void down(){
 
          try {
                int s1=jList1.getLeadSelectionIndex();
                simpan=(File)pl.ls.get(s1);
                pl.ls.remove(s1);
                pl.ls.add(s1+1,simpan);
                updateList();
                jList1.setSelectedIndex(s1+1);
 
         } catch (Exception e) {
         }
 
    }
 
      void open(){
 
        pl.openPls(this);
        updateList();
    }
 
      void save(){
 
       pl.saveAsPlaylist(this);
       updateList();
    }
 
      File play1;
      static int a=0;
 
      void putar(){
 
          if(a==0)
             {
                 try {
                        int p1=jList1.getSelectedIndex();
                        play1=(File)this.updateList.get(p1);
                        FileInputStream fis=new FileInputStream(play1);
                        BufferedInputStream bis=new BufferedInputStream(fis);
                        player=new javazoom.jl.player.Player(bis);
                        a=1;
 
                 } catch (Exception e) {
                     System.out.println("Problema al tocar musica");
                     System.out.println(e);
                 }
 
                 new Thread()
                     {
                         @Override
                         public void run(){
 
                             try {
                                   player.play();
 
                             } catch (Exception e) {
 
                             }
                         }
 
                     }.start();
 
             }
          else
              {
                 player.close();
                 a=0;
                 putar();
 
              }
 
      }
 
      File sa;
      void next(){
 
      if(a==0)
             {
                 try {
                        int s1=jList1.getSelectedIndex()+1;
                        sa=(File)this.pl.ls.get(s1);
                        FileInputStream fis=new FileInputStream(sa);
                        BufferedInputStream bis=new BufferedInputStream(fis);
                        player=new javazoom.jl.player.Player(bis);
                        a=1;
                        jList1.setSelectedIndex(s1);
 
                 } catch (Exception e) {
                     System.out.println("Problema al tocar musica");
                     System.out.println(e);
                 }
 
                 new Thread()
                     {
                         @Override
                         public void run(){
 
                             try {
                                   player.play();
 
                             } catch (Exception e) {
 
                             }
                         }
 
                     }.start();
 
             }
          else
              {
                 player.close();
                 a=0;
                 next();
 
              }
 
      }
 
      void previous(){
 
             if(a==0)
             {
                 try {
                        int s1=jList1.getSelectedIndex()-1;
                        sa=(File)this.pl.ls.get(s1);
                        FileInputStream fis=new FileInputStream(sa);
                        BufferedInputStream bis=new BufferedInputStream(fis);
                        player=new javazoom.jl.player.Player(bis);
                        a=1;
                        jList1.setSelectedIndex(s1);
 
                 } catch (Exception e) {
                     System.out.println("Problema al tocar musica");
                     System.out.println(e);
                 }
 
                 new Thread()
                     {
                         @Override
                         public void run(){
 
                             try {
                                   player.play();
 
                             } catch (Exception e) {
 
                             }
                         }
 
                     }.start();
 
             }
          else
              {
                 player.close();
                 a=0;
                 previous();
 
              }
 
      }
 
    /**
     * 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.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {
 
        jPanel1 = new javax.swing.JPanel();
        jScrollPane1 = new javax.swing.JScrollPane();
        jList1 = new javax.swing.JList<>();
        jButton1 = new javax.swing.JButton();
        jButton3 = new javax.swing.JButton();
        jButton2 = new javax.swing.JButton();
        jButton4 = new javax.swing.JButton();
        jButton5 = new javax.swing.JButton();
        jButton6 = new javax.swing.JButton();
        jButton7 = new javax.swing.JButton();
        jButton8 = new javax.swing.JButton();
        jButton9 = new javax.swing.JButton();
        jButton10 = new javax.swing.JButton();
        jPanel2 = new javax.swing.JPanel();
 
        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
 
        jPanel1.setAutoscrolls(true);
 
        jScrollPane1.setViewportView(jList1);
 
        jButton1.setIcon(new javax.swing.ImageIcon(getClass().getResource("/MainPackage/img/6.png"))); // NOI18N
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });
 
        jButton3.setIcon(new javax.swing.ImageIcon(getClass().getResource("/MainPackage/img/2.png"))); // NOI18N
        jButton3.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton3ActionPerformed(evt);
            }
        });
 
        jButton2.setIcon(new javax.swing.ImageIcon(getClass().getResource("/MainPackage/img/1.png"))); // NOI18N
        jButton2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton2ActionPerformed(evt);
            }
        });
 
        jButton4.setIcon(new javax.swing.ImageIcon(getClass().getResource("/MainPackage/img/3.png"))); // NOI18N
        jButton4.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton4ActionPerformed(evt);
            }
        });
 
        jButton5.setIcon(new javax.swing.ImageIcon(getClass().getResource("/MainPackage/img/4.png"))); // NOI18N
        jButton5.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton5ActionPerformed(evt);
            }
        });
 
        jButton6.setIcon(new javax.swing.ImageIcon(getClass().getResource("/MainPackage/img/10.png"))); // NOI18N
        jButton6.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton6ActionPerformed(evt);
            }
        });
 
        jButton7.setIcon(new javax.swing.ImageIcon(getClass().getResource("/MainPackage/img/9.png"))); // NOI18N
        jButton7.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton7ActionPerformed(evt);
            }
        });
 
        jButton8.setIcon(new javax.swing.ImageIcon(getClass().getResource("/MainPackage/img/5.png"))); // NOI18N
        jButton8.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton8ActionPerformed(evt);
            }
        });
 
        jButton9.setIcon(new javax.swing.ImageIcon(getClass().getResource("/MainPackage/img/7.png"))); // NOI18N
        jButton9.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton9ActionPerformed(evt);
            }
        });
 
        jButton10.setIcon(new javax.swing.ImageIcon(getClass().getResource("/MainPackage/img/8.png"))); // NOI18N
        jButton10.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton10ActionPerformed(evt);
            }
        });
 
        jPanel2.setBackground(new java.awt.Color(0, 0, 0));
 
        javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2);
        jPanel2.setLayout(jPanel2Layout);
        jPanel2Layout.setHorizontalGroup(
            jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 349, Short.MAX_VALUE)
        );
        jPanel2Layout.setVerticalGroup(
            jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 377, Short.MAX_VALUE)
        );
 
        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addComponent(jButton6, javax.swing.GroupLayout.DEFAULT_SIZE, 155, Short.MAX_VALUE)
                    .addComponent(jButton2, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                    .addComponent(jButton3, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                    .addComponent(jButton4, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                    .addComponent(jButton5, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                    .addComponent(jButton7, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 208, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(18, 18, 18)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addContainerGap())
                    .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
                        .addComponent(jButton10)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 81, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                        .addComponent(jButton9)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(jButton8)
                        .addGap(35, 35, 35))))
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                    .addComponent(jPanel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                    .addComponent(jScrollPane1))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jButton1, javax.swing.GroupLayout.Alignment.TRAILING)
                    .addComponent(jButton8, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.PREFERRED_SIZE, 41, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jButton10, javax.swing.GroupLayout.Alignment.TRAILING)
                    .addComponent(jButton9, javax.swing.GroupLayout.Alignment.TRAILING)))
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jButton4)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jButton5)
                .addGap(4, 4, 4)
                .addComponent(jButton7)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addComponent(jButton6)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addComponent(jButton2)
                .addGap(13, 13, 13)
                .addComponent(jButton3)
                .addGap(0, 122, Short.MAX_VALUE))
        );
 
        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(23, 23, 23)
                .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(23, Short.MAX_VALUE))
        );
 
        pack();
    }// </editor-fold>
 
    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
    putar();    // TODO add your handling code here:
    }
 
    private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
    up();        // TODO add your handling code here:
    }
 
    private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
    down();   // TODO add your handling code here:
    }
 
    private void jButton4ActionPerformed(java.awt.event.ActionEvent evt) {
     add();   // TODO add your handling code here:
    }
 
    private void jButton5ActionPerformed(java.awt.event.ActionEvent evt) {
    remove();    // TODO add your handling code here:
    }
 
    private void jButton7ActionPerformed(java.awt.event.ActionEvent evt) {
    save();   // TODO add your handling code here:
    }
 
    private void jButton6ActionPerformed(java.awt.event.ActionEvent evt) {
    open();        // TODO add your handling code here:
    }
 
    private void jButton10ActionPerformed(java.awt.event.ActionEvent evt) {
    previous();    // TODO add your handling code here:
    }
 
    private void jButton9ActionPerformed(java.awt.event.ActionEvent evt) {
    next();    // TODO add your handling code here:
    }
 
    private void jButton8ActionPerformed(java.awt.event.ActionEvent evt) {
    player.close();    // TODO add your handling code here:
    }
 
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(Windows.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(Windows.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(Windows.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(Windows.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>
 
        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new Windows().setVisible(true);
            }
        });
    }
 
    // Variables declaration - do not modify
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton10;
    private javax.swing.JButton jButton2;
    private javax.swing.JButton jButton3;
    private javax.swing.JButton jButton4;
    private javax.swing.JButton jButton5;
    private javax.swing.JButton jButton6;
    private javax.swing.JButton jButton7;
    private javax.swing.JButton jButton8;
    private javax.swing.JButton jButton9;
    private javax.swing.JList<String> jList1;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JPanel jPanel2;
    private javax.swing.JScrollPane jScrollPane1;
    // End of variables declaration
 
private DefaultListModel DefaultListModel() {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }
ReproducirAudio:
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package MainPackage;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
import java.util.Arrays;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
 
public class ReproduceAudio {
    JFileChooser fc=new JFileChooser();
    ArrayList ls=new ArrayList();
 
    void add(JFrame frame){
        fc.setMultiSelectionEnabled(true);
        int fileValid=fc.showOpenDialog(frame);
        if (fileValid==javax.swing.JFileChooser.CANCEL_OPTION) {
        }else if(fileValid==javax.swing.JFileChooser.APPROVE_OPTION) {
            File[] file=fc.getSelectedFiles();
            ls.addAll(Arrays.asList(file));
        }
    }
 
    ArrayList getListSong(){
        return ls;
    }
    // save playlist
    FileOutputStream fos;
    ObjectOutputStream oos;
 
    public void saveAsPlaylist(JFrame frame){
        fc.setMultiSelectionEnabled(false);
        int Valid=fc.showSaveDialog(frame);
        if (Valid==javax.swing.JFileChooser.CANCEL_OPTION) {
        }
        else if(Valid==javax.swing.JFileChooser.APPROVE_OPTION) {
            File pls=fc.getSelectedFile();
            try {
              fos=new FileOutputStream(pls + ".tgr");
              oos=new ObjectOutputStream(fos);
              for(int i=0;i<ls.size();i++){
                   File tmp=(File) ls.get(i);
                   oos.writeObject(tmp);
              }
               oos.close();
            }
            catch (IOException e) {}
        }
    }
 
    FileInputStream fis;
    ObjectInputStream ois;
 
    public void openPls(JFrame frame){
 
        fc.setMultiSelectionEnabled(false);
        int Valid=fc.showOpenDialog(frame);
 
        if (Valid==javax.swing.JFileChooser.CANCEL_OPTION) {
            File pls=fc.getSelectedFile();
            try {
                   fis=new FileInputStream(pls);
                   ois=new ObjectInputStream(fis);
                   File tmp;
 
                   while((tmp=(File) ois.readObject())==null){
                       ls.add(tmp);
                   }
                   if((tmp=(File) ois.readObject())==null){
                          ls.isEmpty();
                      }
                   ois.close();
            } catch (IOException | ClassNotFoundException e) {}
        } else {}
    }
}
Solo quiero arreglar el error,porfavor ayudita.
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