Kommons
· Kommons is a Kotlin Multiplatform Library, with a minimal set of dependencies, allowing you to run Command Lines and Shell Scripts, locally or in a Docker Container—and a dozen of other features like various builders, an improved Java NIO 2 integration, decimal and binary units, and Unicode-related features.
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 kommons-native-1.11.5.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.