Thus, in the face ofД¬oncurrent modification, the iterator fails quickly and cleanly, rather If the list is structurally modified at any time after the iterator isД¬reated, in any way except through the iterator's ownД¬oncurrentModificationException.

The iterators returned by this class's iterator and List list = Collections.synchronizedList(new ArrayList(.)) This is best done at creation time, to prevent accidental If no such object exists, the list should be 'wrapped' using the Synchronizing on some object that naturally encapsulates the list. Resizes the backing array merely setting the value of an element is notДЄ structural modification.) This is typically accomplished by (A structural modification isДЄny operation that adds or deletes one or more elements, or explicitly If multiple threads access an ArrayList instance concurrently,ДЄnd at least one of the threads modifies the list structurally, it Note that this implementation is not synchronized. This may reduce the amount of incremental reallocation. Specified beyond the fact that adding an element has constant amortizedДЄn application can increase the capacity of an ArrayList instanceД«efore adding a large number of elements using the ensureCapacity It is alwaysДЄt least as large as the list size. The size of the array used to store the elements in the list. To that for the LinkedList implementation.Д®ach ArrayList instance has a capacity. That is, adding n elements requires O(n) time. The add operation runs in amortized constant time, Iterator, and listIterator operations run in constant

Vector, except that it is unsynchronized.) This class provides methods to manipulate the size of the array that is In addition to implementing the List interface,

ImplementsДЄll optional list operations, and permits all elements, including Resizable-array implementation of the List interface.

Declaare array vs arraylist