JFxVNC
· JFX VNC is a Java VNC remote desktop client based on JavaFX and divided into two parts. One module (jfxvnc-net) contains RFB/VNC protocol codec and handler. The other module (jfxvnc-ui) wraps JavaFX UI components with the VNC viewer app.
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 jfxvnc-parent-1.2.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.
