How does java.exe behave if I only use -Xmsn option?

Hi,
if I only set the -Xmsn option and do not set -Xmxn option when I launch my Java application, how does java.exe behave? Does the heap will automatically grow like what Bea's JRockit does when my application requires more memory?
I use JDK 5.0.
Thanks for your help!

If your application needs the space, the JVM will grow the heap up to the
default value of -Xmx. Note that it will run a garbage collection cycle before
expanding the heap, and it may take a few or several cycles to expand to
the -Xmx value. How fast or slow it expands depends somewhat on the
behavior of your application (how much it allocates and how long the
objects live).
The default value of -Xmx depends on the platform; see
http://java.sun.com/docs/hotspot/gc5.0/ergo5.html.

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