org.apache.pivot.collections
Interface Group<E>

All Known Subinterfaces:

Set<E>

All Known Implementing Classes:

EnumSet, HashSet, ImmutableSet, SetAdapter, SynchronizedSet, TaskGroup

public interface Group<E>

Interface representing a group of unique elements.

Method Summary

boolean	add(E element) Adds an element to the group.
boolean	contains(E element) Tests the existence of an element in the group.
boolean	remove(E element) Removes an element from the group.

Method Detail

add

boolean add(E element)

Adds an element to the group.

Parameters:

element - The element to add to the group.

Returns:

true if the element was added to the group; false, otherwise.

remove

boolean remove(E element)

Removes an element from the group.

Parameters:

element - The element to remove from the set.

Returns:

true if the element was removed from the group; false, otherwise.

contains

boolean contains(E element)

Tests the existence of an element in the group.

Parameters:

element - The element whose presence in the group is to be tested.

Returns:

true if the element exists in the group; false, otherwise.