Vaadin Add-on Project Archetype
· This archetype generates a multi-module Vaadin add-on project for Vaadin 6.5+ with a test/demo application and a documentation module.
Packaging the add-on as ZIP is supported.
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 vaadin-archetype-addon-0.0.2.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.