truffle-arrow-language
· truffle-arrow-language is a language processing for Apache Arrow(https://arrow.apache.org) and built using Truffle for GraalVM.
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 parent-0.1.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.