Hello

    First I want to explain what I want to do. I have some experiment
 simulator. It takes init data and gives two number result. Users on
 www can add new/modify init data records. Simulator at deadline
 stars processing this data and assigns result numbers to each of
 them. That is a big abstraction of that what I really want to do :-)

 Simulator is written in Java and here my simple idea starts. I want
 to put simulator in java applet which will get initdata record from
 server and send result numbers to server. I will put small rect
 somewhere on the www, and when visitor will browse ower the site he
 will automaticaly help to speed up result numbers calculation
 process. It works in simple way:
 1. applet gets unprocessed data from some address. Server marks this initdata as
 "beign externally processed".
 2. applet makes experiment simulation
 3. if he have result number he sends it with initdataID to server.
 Server marks this initdata as "processed".

 Also server makes internall simulations, but 100 visitors computers
 are better than one computer :)

 And now the PROBLEM :|

 Java Applet can be decompiled and some ugly person can modify it and
 destroy simulation process. How to avoid this situation?

 Java question: is there any way to make applet decompilation
 impossible?

 Need Your help! :D
--
 Regards
   Grzegorz