edu.neu.ccs.quick
Class QuickHashSet

java.lang.Object
  java.util.AbstractCollection
      java.util.AbstractSet
          java.util.HashSet
              edu.neu.ccs.quick.QuickHashSet

All Implemented Interfaces:

Cloneable, Collection, Serializable, Set

public class QuickHashSet

extends HashSet

QuickHashSet extends HashSet by adding one constructor and three methods addItems, setItems, and removeItems that handle an array of Object at once.

All constructors of the original HashSet class are provided as well.

No changes are made to the internal data structure or to any inherited methods.

Since:

2.3

Version:

2.3

See Also:

Serialized Form

Field Summary

Fields inherited from class java.util.HashSet

Constructor Summary

QuickHashSet()
A constructor that delegates to class HashSet.

QuickHashSet(Collection c)
A constructor that delegates to class HashSet.

QuickHashSet(int initialCapacity)
A constructor that delegates to class HashSet.

QuickHashSet(int initialCapacity, float loadFactor)
A constructor that delegates to class HashSet.

QuickHashSet(Object[] items)
Constructor that adds the given array of items one-by-one to the hash set.

Method Summary

void	addItems(Object[] items) Method that adds the given array of items one-by-one to the hash set.
void	removeItems(Object[] items) Method that removes the given array of items one-by-one from the hash set.
void	setItems(Object[] items) Method that first clears this hash set of any existing items and then adds the given array of items one-by-one to the hash set.

Methods inherited from class java.util.HashSet

add, clear, clone, contains, isEmpty, iterator, remove, size

Methods inherited from class java.util.AbstractSet

equals, hashCode, removeAll

Methods inherited from class java.util.AbstractCollection

addAll, containsAll, retainAll, toArray, toArray, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Set

addAll, containsAll, equals, hashCode, removeAll, retainAll, toArray, toArray

Constructor Detail

QuickHashSet

public QuickHashSet()

A constructor that delegates to class HashSet.

QuickHashSet

public QuickHashSet(Collection c)

A constructor that delegates to class HashSet.

QuickHashSet

public QuickHashSet(int initialCapacity)

A constructor that delegates to class HashSet.

QuickHashSet

public QuickHashSet(int initialCapacity,
                    float loadFactor)

A constructor that delegates to class HashSet.

QuickHashSet

public QuickHashSet(Object[] items)

Constructor that adds the given array of items one-by-one to the hash set.

The capacity is set either to 10 or to 1.5 times the length of the array items whichever is larger.

The load factor is set to the default of 0.75.

Parameters:

items - the array of items to add to this hash set

See Also:

addItems(Object[])

Method Detail

addItems

public void addItems(Object[] items)

Method that adds the given array of items one-by-one to the hash set.

If items is null, then does nothing.

Parameters:

items - the array of items to add to this hash set

See Also:

QuickHashSet(Object[]), setItems(Object[]), removeItems(Object[])

setItems

public void setItems(Object[] items)

Method that first clears this hash set of any existing items and then adds the given array of items one-by-one to the hash set.

If items is null, then this method is equivalent to the inherited method clear.

Parameters:

items - the array of items to add to this hash set after clearance

See Also:

addItems(Object[]), removeItems(Object[])

removeItems

public void removeItems(Object[] items)

Method that removes the given array of items one-by-one from the hash set.

If items is null, then does nothing.

Parameters:

items - the array of items to remove from this hash set

See Also:

addItems(Object[]), setItems(Object[])