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Java; am I missing something?

-TheDragon · 2001-12-28T04:28:28

I''ve been reading up on java and have started learning to program with it a bit using Forte''s IDE, but I have a general question to anyone knowledgebale about java in a system intensive environment. After developing any application or using any java app (even small stuff, very small, 100k) a javaw process opens that''s ~15MB to start with and gets larger with the larger app I run. I''m assuming that its the virtual machine that came with windows XP (its in system32/, if WindowsXP doesn''t come with one then Sun''s java SDK probably put it there). Anyway, I was wondering, does the virtual machine have to run everytime the app is run? It''s a huge memory hog and makes small apps in java not a viable process. If I wanted to program a small calculator that I could easily distribute, would I have to distribute a virtual machine with it? If the user had a virtual machine already, would it immediatley gulp 15MB of memory as soon as the user runs the program? I was looking at a PHP IDE suite, and their windows shortcut is my virtual machine (C:\WINDOWS\system32\javaw.exe) with a path argument on the end of it. I thought that interesting, not sure hwo they determined where my virtual machine was. Anyway, the IDE runs the virtual machine, and because of that (or I believe because of that) its huge in memory. 40MB+. Is there a more practical, memory conservative way to run/distribute java apps? Am I missing something? -Phil Crosby www.philisoft.com www.graphics-design.com

General and Gameplay Programming Programming

Started by -TheDragon December 27, 2001 03:10 AM

9 comments, last by -TheDragon 22 years, 3 months ago

ANSI2000

122

December 28, 2001 04:28 AM

You can specify stack sizes for your java application when you are calling the java executable....

java -Xms1MB -Xmx128MB SomeMainClass

-Xms <----- Minimum stack size...
-Xmx <----- Maximum stack size...

Also the IBM JVM is faster then the Sun one, more performant...

Also why the foot print might be biger, why features of course.... Garbage Collection is one... Also one nifty feature a bit slow though... You can search for a function as a strign within the VM and call it when you wish... etc...

Java; am I missing something?

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