A Java API for creating unified big-data processing flows providing an
engine independent programming model which can express both batch and
stream transformations.
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 euphoria-parent-0.8.0-rc1.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.