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Reading an mp3 file  RSS feed

 
And Green
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Am looking for tips on executing an mp3 file using java.

My current application searches relevant directories and creates jbuttons for each song in the directory. What I am looking to do next is for when a user clicks on a button, the relevant mp3 file is played via the default media player (ie Windows media player).

Anyone have any tips on how this may be achieved using the Java 5 API?

Thanks in advance (apologies if this is impossible!)

 
Rob Spoor
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java.awt.Desktop.open(File) should do the trick. Otherwise you can create a process for

This only works on Windows though.
 
And Green
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Rob Prime wrote:java.awt.Desktop.open(File) should do the trick. Otherwise you can create a process for

This only works on Windows though.


Hello, thanks for that Rob, but I am unfamiliar with the package java.awt.Desktop. It is not part of the standard java 5 or 6 api's, is it a package I need to download from somewhere?

Regards.
 
Rob Spoor
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It is part of the standard Java APIs, but not until Java 6.
http://java.sun.com/javase/6/docs/api/java/awt/Desktop.html

If you're using Java 5.0 or before you have to find alternatives.
 
And Green
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Rob Prime wrote:It is part of the standard Java APIs, but not until Java 6.
http://java.sun.com/javase/6/docs/api/java/awt/Desktop.html

If you're using Java 5.0 or before you have to find alternatives.


Cheers for that. It looks promising. If I try to create an object of type Desktop ie :

Desktop mediaplayer = new Desktop();

and then call the open method on it, it gives me the error:

Desktop() has private access in java.awt.Desktop

and it points to the new keyword as the cause of the problem.

I've never come accross anything like this before, any ideas most appreciated!

 
Ulf Dittmer
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Look at the javadocs of that class - the constructor isn't listed, because it's not public. You can obtain a Desktop object via

Desktop mediaplayer = Desktop.getDesktop()

Note that this will not work when run in an IDE; that's what the Desktop.isDesktopSupported() method guards against.
 
And Green
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Ulf Dittmer wrote:Look at the javadocs of that class - the constructor isn't listed, because it's not public. You can obtain a Desktop object via

Desktop mediaplayer = Desktop.getDesktop()

Note that this will not work when run in an IDE; that's what the Desktop.isDesktopSupported() method guards against.


I get you, yes thanks.

I wondered if anyone has been having a simalar problem to this. I am getting a runtime error now. the program can open documents but not mp3's:

import java.io.*;
import java.awt.*;

public class music {

public static void main (String [] args)throws Exception {

File tester = new File("C:/etc/etc/asong.mp3");

Desktop mediaplayer = Desktop.getDesktop();

mediaplayer.open(tester);

}

}

Error on cmd line given as :

Failed to open file Invalid menu handle

at sun.awt.windows.WDEsktopPeer.ShellExecute(WDesktopPeer.java:59)
at sun.awt.windows.WDEsktopPeer.open(WDesktopPeer.java:36)
at java.awt.Desktop.open(desktop.jav:254)
at music.main(music.java:14)


Banging head against brick wall error!

 
Ulf Dittmer
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Just to make sure: is any program associated with MP3s? That is to say, if you double-click that file, does WMP open?
 
And Green
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Ulf Dittmer wrote:Just to make sure: is any program associated with MP3s? That is to say, if you double-click that file, does WMP open?


Yes, WMP opens when an mp3 or wma is clicked. The strange thing is, the above program works with mp4 video and this is opened with WMP, no problem
 
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