This page calls the CORBA STARTS client, which is a GUI applet requiring java 1.1 event handling.
If you get an error running the applet, I suggest you run the client as an application. To do this, the command is
java STARTSClientGUI <hostname of CORBA server> <name of STARTS server in implementation repository>
e.g.
java STARTSClientGUI moscow.cs.cornell.edu STARTS