Stack And Heap

Hi everyone,

I have a rather basic question so please bear with me.

You see i have a java program in which i need to read a serialized java
object at one go. You see the problem the is that the size of the java
object is 800MB.

Now what i am confused about is which command at dos prompt is appropriate
for me

Is it this

java Xmx200m big.java

or this

java Xss200m big.java

The thing is i am currently confused between the java heap size and the
java thread stack size.

What are their differences and defaults?
Which of the above two ways of running the java program would actually
suit my needs.

I am unable to test the 800MB file as it is currrently unavailable but
would really appreciate it if anyone can shed some light on this topic for
me

Thank You

Yours Sincerely

Richard West

.

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