Swank [L1 ] is a "graphical toolkit for use with Jacl", as its home page at http://www.onemoonscientific.com/swank/index.html summarizes. It permits those working in a Java environment to code against the Tk widget set rather than Swing or AWT.
[refs to articles]
Other Tk-like-widget-sets include Proxy Tk and WebWiseTclTk.