Difference between ArrayList and Vector
ArrayList and Vector both implements List interface and maintains insertion order.
But there are many differences between ArrayList and Vector classes that are given below.
| ArrayList | Vector |
|---|---|
| 1) ArrayList is not synchronized. | Vector is synchronized. |
| 2) ArrayList increments 50% of current array size if number of element exceeds from its capacity. | Vector increments 100% means doubles the array size if total number of element exceeds than its capacity. |
| 3) ArrayList is not a legacy class, it is introduced in JDK 1.2. | Vector is a legacy class. |
| 4) ArrayList is fast because it is non-synchronized. | Vector is slow because it is synchronized i.e. in multithreading environment, it will hold the other threads in runnable or non-runnable state until current thread releases the lock of object. |
| 5) ArrayList uses Iterator interface to traverse the elements. | Vector uses Enumeration interface to traverse the elements. But it can use Iterator also. |
0 comments:
Post a Comment