release memory on null vector

[moongeegee]

For some reason I need to set vector to null one by one such as
v.setElementAt(null,20), v.setElementAt(null,21), v.setElementAt(null,
22) and so on.
the above code it only set the element to null but it does not free
the memory. How to free the memory.

And I like to prove that it really free the memory, please help.

Thanks.

 

[Roedy Green]

the above code it only set the element to null but it does not free
the memory. How to free the memory.

The space of the pointed to objects is reclaimed at the next GC. You
can't reclaim the space for the pointers or you could not address by
arithmetic to find the right cell.