wcomponents-i18n
· This module contains server-side and client-side default internationalization bundles.
It also provides an up-to-date list of messages that require translation.
It is suggested that projects with translations watch this project for updates to the messages.
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 wcomponents-i18n-1.5.29.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.