People who have made their assignment will not share it with you (i guess). So, the only sample assignment you can find, is the one that comes with the SCJD-book (by andrew monkhouse).
More info you can find here
Higgledy Smith wrote:So you need to think up an assignment for the SCJD? Sun does not give you an assignment to go off design and build? Thanks.
No, you cannot think up "any" assignment for SCJD submission. When you register for the exam, Sun will give you a specific assignment to download, develop, submit. Due to Sun's confidentiality agreement, nobody can give you a copy of their assignment.
So to get an idea of what a SCJD assignment looks like, you can take a look at the example DVD program in Andrew Monkhouse's SCJD book. The DVD program is NOT the SCJD assignment, its similar in that it uses the same technologies - Core Java, File I/O for persistence, RMI & Sockets for networking and Swing for GUI. Note that SCJD requires you to use one of RMI or Sockets, NOT both.