java wav player adding pause and continue

Question

I have this code which plays wav files from a folder with play and stop. How can I add pause and continue?

 import java.awt.*;
 import java.awt.event.*;
 imp         


        

Answer 1

I think I have an easier solution that does not use internal classes. You can create a clip by only a line code. I used JAVA 1.6 on order that more people can use the code.

Here are my classes:

MainClass :

import java.awt.EventQueue;

public class MainClass {

    public static void main(String[] _args) {
        EventQueue.invokeLater(new LaunchingWindow());
    }
}

LaunchingWindow :

import java.awt.BorderLayout;

import javax.swing.JFrame;
import javax.swing.UIManager;

public class LaunchingWindow extends Thread {

    @Override
    public void run() {
         try {
             UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
         } catch (Exception _0) {
         }

         JFrame frame_ = new JFrame("Testing");
         frame_.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         frame_.setLayout(new BorderLayout());
         frame_.add(new MusicContainer());
         frame_.pack();
         frame_.setLocationRelativeTo(null);
         frame_.setVisible(true);
    }
}

MusicContainer:

import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.io.File;

import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.Clip;
import javax.swing.JButton;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;

public class MusicContainer extends JPanel {

    private Clip clip;
    private JTextField audioFile;
    private JButton play;
    private JButton stop;
    private int lastFrame;

    public MusicContainer() {
        setLayout(new GridBagLayout());

        audioFile = new JTextField(20);
        play = new JButton(">");
        stop = new JButton("[]");

        JPanel controls_ = new JPanel();
        controls_.add(play);
        controls_.add(stop);

        GridBagConstraints gbc_ = new GridBagConstraints();
        gbc_.gridx = 0;
        gbc_.gridy = 0;
        gbc_.weightx = 1;
        gbc_.fill = GridBagConstraints.HORIZONTAL;
        add(audioFile, gbc_);
        gbc_.gridy++;
        add(controls_, gbc_);

        play.addActionListener(new PlayingMusic(this));

        stop.addActionListener(new StoppingMusic(this));
    }

    public void playMusic() {
        if (clip == null) {
            try {
                loadClip(new File(audioFile.getText()));
                clip.start();
                clip.addLineListener(new MusicListener(play));
                play.setText("||");
            } catch (Exception _0) {
                _0.printStackTrace();
                JOptionPane.showMessageDialog(this, "Failed to load audio clip", "Error", JOptionPane.ERROR_MESSAGE);
            }
        } else {

            if (clip.isRunning()) {
                lastFrame = clip.getFramePosition();
                clip.stop();
            } else {
                if (lastFrame < clip.getFrameLength()) {
                    clip.setFramePosition(lastFrame);
                } else {
                    clip.setFramePosition(0);
                }
                clip.start();
            }

        }
    }

    public void stopMusic() {
        if (clip != null) {
            lastFrame = 0;
            clip.stop();
        }
    }

    protected void loadClip(File _audioFile) throws Exception {

        AudioInputStream audioStream_ = AudioSystem.getAudioInputStream(_audioFile);
        //AudioSystem.getClip() is much easier
        clip = AudioSystem.getClip();
        clip.open(audioStream_);

    }
}

MusicListener :

import javax.sound.sampled.LineEvent;
import javax.sound.sampled.LineListener;
import javax.swing.JButton;

public class MusicListener implements LineListener {

    private static final String START = "START";
    private static final String OPEN = "OPEN";
    private static final String STOP = "STOP";
    private static final String CLOSE = "CLOSE";

    private JButton play;

    public MusicListener(JButton _play) {
        play = _play;
    }

    @Override
    public void update(LineEvent _event) {
        String eventType_ = _event.getType().toString();
        if (eventType_.equalsIgnoreCase(START)) {
            play.setText("||");
        } else if (eventType_.equalsIgnoreCase(OPEN)) {
            System.out.println("Open");
        } else if (eventType_.equalsIgnoreCase(STOP)) {
            System.out.println("close");
            play.setText(">");
        } else if (eventType_.equalsIgnoreCase(CLOSE)) {
            play.setText(">");
        }
    }

}

PlayingMusic :

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class PlayingMusic implements ActionListener {

    private MusicContainer container;

    public PlayingMusic(MusicContainer _container) {
        container = _container;
    }

    @Override
    public void actionPerformed(ActionEvent _e) {
        container.playMusic();
    }

}

StoppingMusic :

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class StoppingMusic implements ActionListener {

    private MusicContainer container;

    public StoppingMusic(MusicContainer _container) {
        container = _container;
    }

    @Override
    public void actionPerformed(ActionEvent _e) {
        container.stopMusic();
    }

}