EJB tier for GlassFish
· This module bundles all the EJB related Maven modules together.
Distributions that need EJB capability should depend on this module,
instead of pulling in individual EJB modules separately.
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 ejb-all-7.0.7.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.