What is the List interface?

Posted in: Java Collections The List interface provides support for ordered collections of objects.

• An interface that extends the Collections interface.
• An ordered collection (also known as a sequence).
• The user of this interface has precise control over where in the list each element is inserted.
• The user can access elements by their integer index (position in the list), and search for elements in the list.
• Unlike Set, allows duplicate elements.
• Provides a special Iterator called ListIterator for looping through elements of the List.

Additional methods in List Interface:
List extends Collection with additional methods for performing index-based operations:

• void add(int index, Object element)
• boolean addAll(int index, Collection collection)
• Object get(int index)
• int indexOf(Object element)
• int lastIndexOf(Object element)
• Object remove(int index)
• Object set(int index, Object element)