public class pizza.util.Set<A>

java.lang.Object
   |
   +----pizza.util.Set<A>

public class Set<A>
  implements java.io.Serializable, Cloneable

Set()

Constructs a new, empty set

Set(int)

Constructs a new, empty set with the specified initial capacity.

Set(int, float)

Constructs a new, empty hashtable with the specified initial capacity and the specified

clear()

Clears the set so that it has no more elements in it.

clone()

Creates a clone of the set

contains(A)

Returns true if the collection contains an element for the elem.

elements()

Returns an enumeration of the elements

isEmpty()

Returns true if the set contains no elements.

put(A)

Puts the specified element into the set

rehash()

Rehashes the content of the table into a bigger table. This method is called automatically

remove(A)

Removes the element corresponding to the elem

size()

Returns the number of elements contained in the set.

toString()

Converts to a rather lengthy String.

public Set(int initialCapacity,
           float loadFactor);

Constructs a new, empty hashtable with the specified initial capacity and the specified load factor.

Parameters:

initialCapacity - the initial number of buckets

loadFactor - a number between 0.0 and 1.0, it defines the threshold for rehashing the hashtable into a bigger one.

Throws:

IllegalArgumentException -If the initial capacity is less than or equal to zero.

IllegalArgumentException -If the load factor is less than or equal to zero.

Set

public Set(int initialCapacity);

Constructs a new, empty set with the specified initial capacity.

Parameters:

initialCapacity - the initial number of buckets

Set

public Set();

Constructs a new, empty set. A default capacity and load factor is used. Note that the set will automatically grow when it gets full.

public int size();

Returns the number of elements contained in the set.

isEmpty

public boolean isEmpty();

Returns true if the set contains no elements.

elements

public synchronized Enumeration<A> elements();

Returns an enumeration of the elements. Use the Enumeration methods on the returned object to fetch the elements sequentially.

See also:

keys, Enumeration

contains

public synchronized boolean contains(A elem);

Returns true if the collection contains an element for the elem.

Parameters:

elem - the elem that we are looking for

See also:

contains

rehash

protected void rehash();

Rehashes the content of the table into a bigger table. This method is called automatically when the set's size exceeds the threshold.

put

public synchronized void put(A elem);

Puts the specified element into the set

remove

public synchronized boolean remove(A elem);

Removes the element corresponding to the elem. Does nothing if the elem is not present. return true iff `elem' was in set.

Parameters:

elem - the elem that needs to be removed

clear

public synchronized void clear();

Clears the set so that it has no more elements in it.

clone

public synchronized Object clone();

Creates a clone of the set. A shallow copy is made, the keys and elements themselves are NOT cloned. This is a relatively expensive operation.

Overrides:

clone in class Object

toString

public synchronized String toString();

Converts to a rather lengthy String.

Overrides:

toString in class Object

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