Difference between Arraylist and Vector in java
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admin
·
| Parameter |
ArrayList |
Vector |
| 1)Synchronized |
ArrayList is not Synchronized |
Vector is Synchronized |
| 2)Thread safety |
Since ArrayList is not Synchronized, it's not thread safe means multiple threads can operate simultaneoulsy on ArrayList |
Since Vector is Synchronized, it's thread safe means only one thread can operate at time on Vector |
| 3)Execution speed |
Since multiple threads can operate of ArrayList its faster |
Since only one thread operate at time on Vector its slow as compared to ArrayList |
| 4)Capacity |
New capacity of Arraylist =( Initial capacity +(Initial capacity*3/2)+1) |
New capacity of Vector =2* initial capacity |
| 5)Data retrival |
We can retrive data from ArrayList using iterator() only |
We can retrive data from Vector using iterator() as well as elements() |
| 6)Duplicates |
Duplicates are allowed in ArrayList |
Duplicates are also allowed in Vector |
| 7)Null insertion |
Null insertion is allowed in ArrayList |
Null insertion is also allowed in Vector |
| 8)Insertion Order |
Insertion order is preserved in ArrayList |
Insertion order is preserved in Vector |
