Compose UI primitives
· Compose UI primitives. This library contains the primitives that form the Compose UI Toolkit, such as drawing, measurement and layout.
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 ui-js-1.5.0-beta02.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.