GCP Plugin Core for Java
· This set of libraries provides common code used for Google Cloud Graphite's integrations to enable using GCP with popular open source platforms.
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 gcp-plugin-core-java-0.3.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.