Preallocate memory for application

Hello All,Would some one please tell me how to allocation memory for application that need a lot of memory in Java? I remember you can write system.allocateMem()in your application.
[202 byte] By [nuonuoxua] at [2007-10-1 5:36:44]
# 1
http://forum.java.sun.com/thread.jspa?threadID=597799&messageID=3176033#3176033
BIJ001a at 2007-7-9 13:47:29 > top of Java-index,Administration Tools,Sun Connection...