How to set a stack size. -Xss doesn't work

[protonus]

Hi,
Simple program:

public class Stack {

static int a;

static void f(){
a++;
f();
}

public static void main(String[] args){
a=0;
try{f();}
catch(StackOverflowError e)
{System.err.print(e.getClass() + " a= " + a);}
}
}


always throws StackOverflow error for the same value of a.
regardless I run the program as java -Xss1k Stack or java -Xss1024K Stack

My understanding is the larger stack the longer the program should run.

What I am missing?

Thank you for your help

[pao]

Try it like this: -Xms1024 -Xmx2048

Those options set the initial memory allocation and the maximum memory allocation, read the java documentation to see examples.

java - the Java application launcher

[protonus]

Hi,
Xms and Xmx set a heap size not a stack size.
I tested them on jre1.5 and jre1.6 - no impact on my program behaviour.

I just noticed that -Xss doesn't work on Java5 only. It works on Java6.

So it looks like a bug in jre 1.5.

Thank for your help.

[pao]

Sorry about that, I didnt even know you could set the available stack memory, I only ever set the heap size. In fact thats the first time I have even encountered xss. Apologies!

[protonus]

Me too. I also have never used xss before.
There is nothing to apologize for.
You pointed me on Xms i Wmx swichtes I also never used before
so I learned something new too.
Thank's again.