arrayList.clear() VERSUS arrayList = new ArrayList()
Posted on 2008-01-25
I'm wondering if ArrayList clear() method will release memory allocated for the ArrayList back into the Operating System.
1.) I create a new list with 100 items. The list now has 100 object pointers. Each pointer in the list reference to an object somewhere in memory.
2.) Then I call clear(); Now all the objects referenced by the pointer in the list have become eligible for garbage collection. But the list itself still uses memory to keep 100 object pointers.
3.) Then if I fill in the list with 5 more items. Then I have a list with 5 items but the memory size used by the list is stil for 100 object pointers.
Is this correct?