JUncacher
· JUncacher is a cache invalidation tool which allows to have a single point of eviction/update for all caches of an application (Varnish, ehcache, Solr, others).
Download JD-GUI to open JAR file and explore Java source code file (.class .java)
Click menu "File → Open File..." or just drag-and-drop the JAR file in the JD-GUI window juncacher-1.2.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.