ArrayList vs LinkedList vs Vector

   June 27, 2021       Ravi Yasas

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ArrayList vs LinkedList vs Vector 

	ArrayList	LinkedList	Vector
Data structure	Index-based  dynamic array	Doubly linked list	Growable array
Increment size	50%	No initial size	100%
Traverse	Uses iterator	Uses iterator	Uses enumeration
Memory usage	Less memory usage	More memory usage
Accessibility	Random and fast	Sequential and slow	Random and fast
Order	Insertion order	Insertion order	Insertion order
Duplicates	Allow	Allow	Allow
Insert / Delete	Slow	Fast	Slow
Synchronized	No	No	Yes
Implements	RandomAccess interface	NA	RandomAccess interface & Serializable interface
Null values	Yes	Yes	Yes

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