Arraylist v/s Vector

ArrayList v/s Vector

Expect this question in a junior level (0-2 yrs) interview. One of the most done to death and still kicking question. This questions lays the foundation of advanced level question.

Let's see the differences one by one.

S No.	Arraylist	Vector
1	Non Synchronized and hence not thread safe	Synchronized and Thread safe
2	Faster performance as non-synchronized	Slower performance as only one thread access at a time.
3	Array increase the size by 50% when full (Starting Size 10 by default)	Vector doubles the size when full.
4	Uses Iterator for iteration	Uses Enumerator for iteration