How to check the Memory consumtions and time taken by a Java Program??

HI all,
I want to know how to check for the Memory Usage of an XML Parser.
See, a product was developed completely in DOM parser and now I am replacing that thing with SAX Parser Completely, because the DOM parser was taking huge memory as u may have guessed.
BUt the thig is that, now I want to check how much memory is being taken by the SAX parser alone and DOM parser alone so that I can compare them.
Can anyone suggest me how to do that ???
Thanx in Advance
Kaushik

Thanx boss ..thanx a lot
I tried that, but in the API docs, it is mentioned that freeMemory()Returns the amount of free memory "in the system"
and totalMemory() Returns the total amount of memory in the "Java Virtual Machine".
So if I compare both the Values then would it give the Correct result to me ???? Beacuse the freeMemory() gives the data in terms of the Host System whereas totalMemory() provides the data in terms of Java Virtual Machine ..... are they Same ?????
I think I am clear in explaining what exactly is going on my mind ...
Please clarify
Thanx again
Kaushik

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Arnau wrote in message news:<[email protected]>...
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