How can I play a .WAV file with a button click in my Java application?

Playing .WAV Files with Java with a Button Click

When developing Java applications, it's often necessary to incorporate sound effects or audio playback into the user experience. This article demonstrates how to play a short .wav beep sound upon button click.

Code Snippet for Playing .WAV Files

The following code snippet provides a detailed solution to the issue:

import java.io.File;
import java.io.IOException;

import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.SourceDataLine;

public class PlayWAVFileOnClick {

    private static final int BUFFER_SIZE = 128000;
    private File soundFile;
    private AudioInputStream audioStream;
    private AudioFormat audioFormat;
    private SourceDataLine sourceLine;

    public static void main(String[] args) {
        // Instantiate a new PlayWAVFileOnClick object
        PlayWAVFileOnClick player = new PlayWAVFileOnClick();

        // Specify the path to the .wav file
        String soundFilepath = "path/to/beep.wav";

        // Play the sound
        player.playSound(soundFilepath);

        // Close resources after playback
        player.closeResources();
    }

    public void playSound(String filename) {
        try {
            soundFile = new File(filename);
            audioStream = AudioSystem.getAudioInputStream(soundFile);
            audioFormat = audioStream.getFormat();
            DataLine.Info info = new DataLine.Info(SourceDataLine.class, audioFormat);
            sourceLine = (SourceDataLine) AudioSystem.getLine(info);
            
            sourceLine.open(audioFormat);
            sourceLine.start();
            
            byte[] data = new byte[BUFFER_SIZE];
            int readSize = 0;
            
            while ((readSize = audioStream.read(data)) != -1) {
                sourceLine.write(data, 0, readSize);
            }
            
        } catch (IOException | LineUnavailableException e) {
            e.printStackTrace();
        }
    }

    public void closeResources() {
        try {
            sourceLine.drain();
            sourceLine.close();
            audioStream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

Explanation

• playSound(String filename) method takes the path to the .wav file as input and plays the audio.
• closeResources() method closes all resources used for audio playback, such as audio stream and source line.
• BUFFER_SIZE is specified for efficiency to avoid creating too many small buffers for audio playback.

Conclusion

Using this code, Java developers can easily incorporate .wav sound playback into their applications, allowing them to enhance the user experience with sound effects and notifications.

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