Rheem
· Rheem is a tool to build platform-agnostic data processing apps and have them both optimized for and
executed on multiple different execution platforms, such as Java Streams and Apache Spark.
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 rheem-0.3.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.