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Class java.util.Collections.UnmodifiableSet

java.lang.Object
  |
  +--java.util.Collections.UnmodifiableCollection
        |
        +--java.util.Collections.UnmodifiableSet

Subclasses:

Collections.UnmodifiableMap.UnmodifiableEntrySet, Collections.UnmodifiableSortedSet

static class Collections.UnmodifiableSet

extends Collections.UnmodifiableCollection

implements Set, java.io.Serializable

See Also:

Serialized Form

Constructor Summary

Collections.UnmodifiableSet(Set s)

Method Summary

boolean	equals(java.lang.Object o)
int	hashCode()

Methods inherited from class java.util.Collections.UnmodifiableCollection

addAll, add, clear, containsAll, contains, isEmpty, iterator, removeAll, remove, retainAll, size, toArray, toArray

Methods inherited from class java.lang.Object

, clone, equals, finalize, getClass, hashCode, notifyAll, notify, toString, wait, wait, wait

Constructor Detail

Collections.UnmodifiableSet

Collections.UnmodifiableSet(Set s)

Method Detail

equals

public boolean equals(java.lang.Object o)

Description copied from interface:
Compares the specified Object with this Set for equality. Returns true if the given object is also a Set, the two Sets have the same size, and every member of the given Set is contained in this Set. This ensures that the equals method works properly across different implementations of the Set interface.

Specified by:

equals in interface Set

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Description copied from interface:
Returns the hash code value for this Set. The hash code of a Set is defined to be the sum of the hashCodes of the elements in the Set, where the hashcode of a null element is defined to be zero. This ensures that s1.equals(s2) implies that s1.hashCode()==s2.hashCode() for any two Sets s1 and s2, as required by the general contract of Object.hashCode.

Specified by:

hashCode in interface Set

Overrides:

hashCode in class java.lang.Object