GOMscript

GOMscript is an object-oriented C++-like interpreter. It allows users to extend it with new functions and classes. An extension is available for 'roaming agents': it allows code and state to be sent around to different machines. The source code is included.

Sample code for argument-based method dispatching

Method lookup in languages like C++ or Java are receiver-based, that is, the method to be invoked is chosen according to the actual type of the receiver object. However, in certain cases it is better to have a more flexible method lookup. The code below is used in JavaGroups and shows how argument-based method lookup can be mimicked in receiver-based languages (in this case in Java). Argument-based method lookup is used for example in CLOS and chooses the method to invoke according to type of receiver and all types of the arguments. Class MethodCall.java implements this approach and MethodCallTest.java is a test program.

JavaGroups over Ibus

Includes 2 sample applications (a grid demo and a simple whiteboard) written on top of JavaGroups and using the iBus abstraction. iBus is required and can be retrieved at the above URL. Download, unzip and untar. There are 2 scripts which start the respective demos. Run each script twice (or multiple times).

Download demo.tar.gz

JBiff

A Java application similar to xbiff which displays mail available on a POP server. When mail is available, a user-defined bitmap will be displayed in addition to the number of emails available on the server. By clicking on the main window, the subjects of the mail are displayed. JBiff does not delete mail on the POP server, nor does it download mail to a local mailbox; for this a regular mail program has to be used.

Download jbiff.tar.gz

Buttonbar

A Java applet that displays a number of items to be selected in a button bar. The bar is configurable. If you have Java enabled, you see a small demo of Buttonbar below:
This is a Buttonbar with 3 elements: You do not have Java enabled, therefore you cannot see the demo !
Here is the code for Buttonbar.java. Buttonbar is used on my home page: http://www.cs.cornell.edu/home/bba.