Collection Framework - List Interface and its implementations

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List interface extends the Collection interface. So it has all the methods available in the collection interface. On top of it, below are the methods added in the List interface :

Addition/Selection/Deletion methods :
  • add(int index, Object o) - Add an object to a specified index
  • addAll(int index, Collection coll) - Add a collection to a specified index
  • remove(int index) - Remove an object from the index
  • set(int index, Object o) - Set an object at a particular index
  • get(int index) - Get an object at a particular  index
Utility methods :
  • indexOf(Object o) - Index of Object o
  • lastIndexOf(Object o) - Since list support duplicates, this one returns the last index of o.
  • listIterator() - returns a list iterator that can be used to iterate over the list.

The implementations of List Interface are :
1. ArrayList
2. LinkedList
3. Vector
4. Stack

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