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Java™
by example!
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How do I get the size of an object?
Java does not know a sizeof operator as C++ does. But you may try something like getting the amount of free memory through the method freeMemory() in the Runtime class:
You can't rely on this code because you do not have control over the Garbage Collector thread that makes the amount of free memory fluctuate.
Another trick is to serialize the state of the object you want the size of and deduct information from that.
But think again, do you really need the capability of knowing the exact number of bytes of an Object? Probably not.
Further Information
Author of answer: Joris Van den Bogaert
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