Dynamically loading jar file into Java program

Question

I'm working on Desktop applications. I'm using JFC/Swing to build the application.

Now I want to build application that can be upgradable by changing some jar files, instead of installing entire application again.

I'm stuck with some basic steps. I want to add JMenu from various jar files, so I dynamically added those jar files. Now my issue is that, I want to perform some functions like adding JInternalFrame to the main class, which loads entire jar files. I am not able to achieve it.

Please help me with this issue, and suggest any idea to make it possible.

Answer 1

Now i want to build application that can be upgradable by changing some jar files, instead of installing entire application again.

Java Web Start ..

Java Web Start (JWS) is the Oracle Corporation technology used to launch rich client ( Swing , AWT, SWT) desktop applications directly from a.network or inte.net link. It offers 'one click' installation for platforms that support Java.

JWS provides many appealing features including, but not limited to, splash screens, desktop integration, file associations, automatic update (including lazy downloads and programmatic control of updates), partitioning of natives & other resource downloads by platform, architecture or Java version, configuration of run-time environment (minimum J2SE version, run-time options, RAM etc.), easy management of common resources using extensions..

Answer 2

you can do it easily using URLClassLoader, you can see s simple example here: http://snippets.dzone.com/posts/show/3574