...Best ran from the command line.
Can also go to your own code with a designated text editor--directly to a public method if your text editor supports a line number as an argument, which gedit does so highly recommend it.
Is a stateless app.
Download includes: ClassViewer.jar and ClassViewerConfig.xml
Can be run from the jar. Run unpacked from the jar from the command line, for classpath and local file access. No installer used or included.