Small Java Project

I need a simple java program for shopping in a supermarket which has a concurrent programming solution ## Deliverables I need a description of the problem that u have solved, specify the concurrent processes, sequential activities carried out by each (actor/process) plus the constructs and condition synchronisation. This should be 2-3 pages long - In Word Next I need a copy of the java code - suitably annotated with comments to help reading ## Platform I need this application to run on a Windows 2000 O/S and be compatible with version 1.3 of java