org.hsqldb.lib

Class HashSet

java.lang.Object

org.hsqldb.map.BaseHashMap

org.hsqldb.lib.HashSet

All Implemented Interfaces:

Collection, Set

Direct Known Subclasses:

OrderedHashSet

public class HashSet
extends BaseHashMap
implements Set

This class does not store null keys.

Since:

1.7.2

Field Summary

Fields inherited from class org.hsqldb.map.BaseHashMap

ACCESS_MAX, emptyObjectArray

Constructor Summary

Constructors

Constructor and Description
HashSet()
HashSet(int initialCapacity)

Method Summary

Modifier and Type	Method and Description
boolean	add(java.lang.Object key) returns true if added
boolean	addAll(Collection c) returns true if any added
boolean	addAll(java.lang.Object[] keys) returns true if any added
boolean	addAll(java.lang.Object[] keys, int start, int limit) returns true if any added
boolean	contains(java.lang.Object key)
boolean	containsAll(Collection col)
java.lang.Object	get(java.lang.Object key) This method returns the Object that is already in the set and is equal to the argument o.
Iterator	iterator()
boolean	remove(java.lang.Object key) returns true if removed
boolean	removeAll(Collection c) returns true if all were removed
boolean	removeAll(java.lang.Object[] keys) returns true if all were removed
void	setComparator(ObjectComparator comparator)
java.lang.Object[]	toArray()
void	toArray(java.lang.Object[] a)
java.lang.String	toString() Returns a String like "[Drei, zwei, Eins]", exactly like java.util.HashSet.

Methods inherited from class org.hsqldb.map.BaseHashMap

capacity, clear, getAccessCountCeiling, incrementAccessCount, isEmpty, setAccessCountFloor, size

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.hsqldb.lib.Set

clear, equals, hashCode, isEmpty, size

Constructor Detail

HashSet

public HashSet()

HashSet

public HashSet(int initialCapacity)
        throws java.lang.IllegalArgumentException

Throws:

java.lang.IllegalArgumentException

Method Detail

setComparator

public void setComparator(ObjectComparator comparator)

contains

public boolean contains(java.lang.Object key)

Specified by:

contains in interface Collection

Specified by:

contains in interface Set

containsAll

public boolean containsAll(Collection col)

get

public java.lang.Object get(java.lang.Object key)

Description copied from interface: Set

This method returns the Object that is already in the set and is equal to the argument o.

Specified by:

get in interface Set

add

public boolean add(java.lang.Object key)

returns true if added

Specified by:

add in interface Collection

Specified by:

add in interface Set

addAll

public boolean addAll(Collection c)

returns true if any added

Specified by:

addAll in interface Collection

addAll

public boolean addAll(java.lang.Object[] keys)

returns true if any added

addAll

public boolean addAll(java.lang.Object[] keys,
                      int start,
                      int limit)

returns true if any added

remove

public boolean remove(java.lang.Object key)

returns true if removed

Specified by:

remove in interface Collection

Specified by:

remove in interface Set

removeAll

public boolean removeAll(Collection c)

returns true if all were removed

removeAll

public boolean removeAll(java.lang.Object[] keys)

returns true if all were removed

toArray

public void toArray(java.lang.Object[] a)

toArray

public java.lang.Object[] toArray()

iterator

public Iterator iterator()

Specified by:

iterator in interface Collection

Specified by:

iterator in interface Set

toString

public java.lang.String toString()

Returns a String like "[Drei, zwei, Eins]", exactly like java.util.HashSet.

Overrides:

toString in class java.lang.Object