Maximum Memory size of Collections

hi,
can anyone please tell me how much data can be stored in a collection.
I would be using an Arraylist to store objects created at runtime, but i am not sure how much data can be stored into Arraylist.??
Please reply , Thanks in advance

dannyyates wrote:
uj_ wrote:
The collections store object references and each one takes 4 bytes. Then there's an overhead by if you multiply with 2 you're on the safe side.Takes 4 bytes on a 32 bit platform... maybe. It's not specified by the JVM spec.Well, then use 8 bytes if you have a 64 bit platform. My point is that the objects aren't stored in the collection, just their references.
I was just offering a rougth estimate. If you've got something better please feel free to spill it out.
Say you store 1000 object references in an ArrayList. This will take no more than 1000 * 4 * 2 = 8000 byte.What about the actual objects themselves?Yes what about them. They're stored on the heap but not in the collection.
In general the sum of the memory of all objects is far larger than the collection that holds their references. So if there are memory problems it's seldom due to collections.

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