Java jLayer应用程序在播放歌曲时冻结

Question

I have a problem with jLayer. I have a button with code for starting a song:

private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {        
    try {
        Player prehravac;
        FileInputStream buff = new FileInputStream(Okno.filename);
        prehravac = new Player(buff);
        prehravac.play();
        if (prehravac != null) {
            prehravac.close();
            this.dispose();
        }
    } catch(Exception e) {

    }
}                                    

When I click on this button, it begins to play the song but whole application freezes and I cannot click on anything. When the song ends, it's okay and I can click on other components again.

Can someone help me pls ? :) thank

Answer 1

It happens because the song-playing happens in the same thread as the GUI, or more specifically the EDT . Therefore, the GUI does not response, when the song is playing. To fix this, do something like this:

new Thread(){
  run(){
    //Your play code
  }
}.start();

This will play your stuff in a seperate Thread. However, you have to regard that since the GUI is responsive, you can start songs while songs are still playing.

For more information, see this

Answer 2

Tasks on the EDT (event dispatch thread) must finish quickly; if they don't, unhandled events back up and the user interface becomes unresponsive.