List Interface in Java | Collection Framework in Java | Java Collections|Java Tutorial for Beginners

Published: 21 June 2022
on channel: Krishna Sakinala (Automation Testing)

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List:

List is child interface of Collection.
It is used to represent a group of individual objects as a single entity where duplicates are allowed and insertion order preserved.
Duplicate objects can be differentiated using the index.
So, index will play major role in List.

Methods defined in List Interface:

void add(int index, Object o): To add an element at a particular index.
boolean addAll(int index, Collection c): To add a collection at a particular index.
Object get(int index): To get an element which is at particular index.
Object remove(int index): To remove an element which is at particular index.
Object set(int index, Object new): To replace an element present at specified index with provided element.
int indexOf(Object o): Returns the index of first occurrence of specified element.
int lastIndexOf(int index, Collection c): Returns the index of last occurrence of specified element.
ListIterator listIterator(): Returns a list iterator over the elements in this list.

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