How do you include libraries (JMF specifically)?

[john price]

I installed JMF (Java Media Framework). It is necessary for a test file that I ran. It worked perfectly. I was just wondering how do I include JMF libraries in my program. I use the command line and Notepad++, so IEDs are a no go. Do I just put in my code:

import jmf.jar;

and then in my JAR file include the jmf.jar file?
I've never used or made a library in an application, so sorry if I'm totally off.
Thanks,
cc11rocks aka John Price

[Ulf Dittmer]

You don't import files (you import packages) and then add the corresponding jar files to your classpath at runtime (the classpath can contain multiple jar files).

[john price]

I'm so frustrated, I'm about to shoot Java.
Where all the JAR files are: "E:\MediaTest"
Where the two class files I need are "E:"
I am running it off of my flash drive.
Here is the error I receive when I try to run it...

E:\>javac MediaPanel.java

E:\>javac MediaTest.java

E:\>java -cp E:\MediaTest\*.jar;E:\MediaTest\*.properties;E:\MediaTest\*.propert
ies.orig E:\MediaTest
Exception in thread "main" java.lang.NoClassDefFoundError: E:\MediaTest
Caused by: java.lang.ClassNotFoundException: E:\MediaTest
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
Could not find the main class: E:\MediaTest.  Program will exit.

How do I make this work?
Here is the DIR for E:

Directory of E:\

Mediatest.java
MediaPanel.java
MediaPanel.class
MediaTest.class
MediaTest

DIR for E:\MediaTest:

Directory of E:\MediaTest\

sound.jar
MediatTest.jar
jmf.jar
jmf.properties
jmf.properties.orig
mediaplayer.jar
customizer.jar

What the heck?
Here is MediaTest.java and MediaPanel.java
MediaPanel.java:

  	import java.awt.*;
    	import java.io.*;
		import java.net.*;
    	import javax.media.*;
   	import javax.swing.*;
   
   	public class MediaPanel extends JPanel
   	{
      	 public MediaPanel( URL mediaURL )
      	 {
        	 setLayout( new BorderLayout() );
  
  	 Manager.setHint( Manager.LIGHTWEIGHT_RENDERER, true );
        
       	 try
        	 {
           	 Player mediaPlayer = Manager.createRealizedPlayer( mediaURL );
  
           	 Component video = mediaPlayer.getVisualComponent();
           	 Component controls = mediaPlayer.getControlPanelComponent();
           
           	 if ( video != null )
              	 add( video, BorderLayout.CENTER ); 
  
            	 if ( controls != null )
              	 add( controls, BorderLayout.SOUTH );
  
           	 mediaPlayer.start();
        	 }
       	 catch ( NoPlayerException noPlayerException )
       	 {
           	 System.err.println( "No media player found" );
        	 }
        	 catch ( CannotRealizeException cannotRealizeException )
 	 {
            	 System.err.println( "Could not realize media player" );
       	 } 
        	 catch ( IOException iOException )
   {
            	 System.err.println( "Error reading from the source" );
         	 }
	      }
   	}

MediaTest.java:

import java.io.*;
    	import java.net.*;
    	import javax.swing.*;
  
  	public class MediaTest
   	{
     	 public static void main( String args[] )
     	 {
        	 JFileChooser fileChooser = new JFileChooser();
  
       	 int result = fileChooser.showOpenDialog( null );
  
        	 if ( result == JFileChooser.APPROVE_OPTION )
        	 {
			 URI stupid = null;
           	 URL mediaURL = null;
  
           	 try
           	 {
				 stupid = fileChooser.getSelectedFile().toURI();
             	 mediaURL = stupid.toURL();
            }
           	 catch ( MalformedURLException malformedURLException )
           	 {
              	 System.err.println( "Could not create URL for the file" );
           	 }
  
           	 if ( mediaURL != null )
           	 {
              	 JFrame mediaTest = new JFrame( "Media Tester" );
               	 mediaTest.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
   
               	 MediaPanel mediaPanel = new MediaPanel( mediaURL );
               	 mediaTest.add( mediaPanel );
   
               	 mediaTest.setSize( 300, 300 );
               	 mediaTest.setVisible( true );
            	 }
 }
 }
}

cc11rocks aka John Price

[Ulf Dittmer]

java.lang.NoClassDefFoundError: E:\MediaTest

That's the key part: you're specifying a class called "E:\MediaTest" which doesn't exist (because the class is called "MediaTest"). Class names and file names are not the same thing, and are not interchangeable. The "E:\" part needs to go into the classpath. So instead of

java -cp E:\MediaTest\*.jar;E:\MediaTest\*.properties;E:\MediaTest\*.properties.orig E:\MediaTest

you need something like

java -cp E:\MediaTest\*.jar;E:\MediaTest\*.properties;E:\MediaTest\*.properties.orig;E:\ MediaTest

[john price]

It works now, thank you. Now I want to convert the class files into an executable jar file. Would I just do the same thing?
Something like this? :

jar cmf -cp E:\MediaTest\*.jar;E:\MediaTest\*.properties;E:\MediaTest\*.properties.orig;E:\ MediaTest.mf MediaTest.jar MediaPanel MediaTest

[Ulf Dittmer]

You wouldn't specify a classpath (it's not needed). But you may want to include the properties files in the jar file (depending on what those are, and how they get used).

[john price]

But how does the JAR just know to look for a library?
Thanks,
cc11rocks aka John Price

[Ulf Dittmer]

Why would "jar" need access to the libraries? It's a tool to bundle files (specifically, class files) together.

Or are you saying that you want to bundle ALL classes -including JMF- into a single jar file? That would be more involved, and not really necessary. Not commonly done, either.

[john price]

Could you give me a working example? It keeps saying "No media player found" on another computer (that does not have JMF installed). The example should include a JAR file (with 1-2 classes) and a library (preferabley in the form of a JAR file). I am having SOOO much trouble with this.
John Price aka cc11rocks

EDIT: Just found something that may fix the "problem".

http://download.oracle.com/javase/tutorial/deployment/jar/downman.html

The solution goes in the manifest file, specifying the class path.

[john price]

Yep, that was the solution. I just had to add:

Class-Path: MediaTest/jmf.jar MediaTest/sound.jar MediaTest/mediaplayer.jar MediaTest/customizer.jar MediaTest/mp3plugin.jar

to the manifest file.
The weird thing is that mp3 files are not working...
If you know what is wrong, please share.
Thanks,
cc11rocks aka John Price