A tutorial
example of programming with Java IDL: Hello World
The complete Java SE 6.0 IDL documentation (i.e., Java's mapping to Corba)
The source code for another example, a banking application (from
the Java Network Programming textbook): the IDL file,
the server side implementation, and the
client
Linux DCE, Corba, and DCOM Guide:
contains links to many different Corba implementations for Linux, plus
links to tutorials etc. (a bit dated, last updated in 2001)