File[] files = new File ("/tmp" ) .listFiles();

To get all names of the files under directory /tmp

Image top = ImageUtils.loadPng(new File(getSkinDirectory(), "kde/titlebar_selected.png").getAbsolutePath());

getAbsolutePath() and load an image.

OSGi Bundles Worldwide.

http://www.google.com/notebook/public/07454133468172869619/BDSOkDAoQitaurfYj

This webpage will collect as much as OSGi compatible bundles as an OSGi Bundle Protal.

context.installBundle( "file:/classes/client1.jar" ).start();

How to install and run another OSGi bundle in Java.
you can get context from your start(BundleContext context).

boolean bDebug = "true".equals( System.getProperty( "org.knopflerfish.soap .remotefw.server.debug", "false"));

How to get System Property from java and check the result in one line.

this.getClass(). getResource( "square.png" )

the image file "square.png" should be under the same directory as the class.