Java Expression Trees library
· The Java Query library enables language-level code expressions to be represented as objects in the form
of expression trees at runtime,
for example, a method call or a binary operation such as x < y.
This enables dynamic analysis of lambda's code, usually for building fluent interfaces.
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 jaque-2.4.2.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.