AbstractSet

public abstract class AbstractSet extends AbstractCollection<E>
implements Set<E>
Known Direct Subclasses
Known Indirect Subclasses

This class provides a skeletal implementation of the Set interface to minimize the effort required to implement this interface.

The process of implementing a set by extending this class is identical to that of implementing a Collection by extending AbstractCollection, except that all of the methods and constructors in subclasses of this class must obey the additional constraints imposed by the Set interface (for instance, the add method must not permit addition of multiple instances of an object to a set).

Note that this class does not override any of the implementations from the AbstractCollection class. It merely adds implementations for equals and hashCode.

This class is a member of the Java Collections Framework.

Protected Constructor Summary

AbstractSet()
Sole constructor.

Public Method Summary

boolean
equals(Object o)
Compares the specified object with this set for equality.
int
hashCode()
Returns the hash code value for this set.
boolean
removeAll(Collection<?> c)
Removes from this set all of its elements that are contained in the specified collection (optional operation).

Inherited Method Summary