The console will also display a message - JRebel: Reloading class 'jr.util.Util' - meaning that JRebel has noticed that the class has been altered and you want to use it in your application. Hit F5 and the corresponding change will be visible now. Now if you run the example (see above), and after it is started, try making some changes to the Util class (for instance, change "hello" to "goodbye"). Once you download and install the software, it is possible to start the application from your favorite IDE (via dedicated plug-in) or by adding special parameters to the application start script: -javaagent:"jrebel.jar" JRebel will help you with the issue above. To see the changes, you would need to redeploy the application which may require some time once you have a more sophisticated application.
The problem is that if you make some changes in the Util class and recompile it, the change will not be visible in the application.
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