what are the differences among classic/libjvm.so, server/libjvm.so, and client/libjvm.so?

Hi, Dear ALL:   In the linux JDK, there are 3 libjvm.so,  what are the differences among them?   (classic/libjvm.so, server/libjvm.so, and client/libjvm.so)   Thanks a lot.    

jdk1.3.1 crash on Linux

n somebody there help me out on these two problems?     Thanks a lot.     Hong ZHou