Package org.apache.xalan.xsltc.runtime
Class Hashtable
- java.lang.Object
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- org.apache.xalan.xsltc.runtime.Hashtable
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public class Hashtable extends java.lang.Object
The main hash-table implementation
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Constructor Summary
Constructors Constructor Description Hashtable()
Constructs a new, empty hashtable with a default capacity and load factor.Hashtable(int initialCapacity)
Constructs a new, empty hashtable with the specified initial capacity and default load factor.Hashtable(int initialCapacity, float loadFactor)
Constructs a new, empty hashtable with the specified initial capacity and the specified load factor.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
clear()
Clears this hashtable so that it contains no keys.boolean
contains(java.lang.Object value)
Tests if some key maps into the specified value in this hashtable.boolean
containsKey(java.lang.Object key)
Tests if the specified object is a key in this hashtable.java.util.Enumeration
elements()
Returns an enumeration of the values in this hashtable.java.lang.Object
get(java.lang.Object key)
Returns the value to which the specified key is mapped in this hashtable.boolean
isEmpty()
Tests if this hashtable maps no keys to values.java.util.Enumeration
keys()
Returns an enumeration of the keys in this hashtable.java.lang.Object
put(java.lang.Object key, java.lang.Object value)
Maps the specifiedkey
to the specifiedvalue
in this hashtable.java.lang.Object
remove(java.lang.Object key)
Removes the key (and its corresponding value) from this hashtable.int
size()
Returns the number of keys in this hashtable.java.lang.String
toString()
Returns a rather long string representation of this hashtable.
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Constructor Detail
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Hashtable
public Hashtable(int initialCapacity, float loadFactor)
Constructs a new, empty hashtable with the specified initial capacity and the specified load factor.
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Hashtable
public Hashtable(int initialCapacity)
Constructs a new, empty hashtable with the specified initial capacity and default load factor.
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Hashtable
public Hashtable()
Constructs a new, empty hashtable with a default capacity and load factor.
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Method Detail
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size
public int size()
Returns the number of keys in this hashtable.
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isEmpty
public boolean isEmpty()
Tests if this hashtable maps no keys to values.
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keys
public java.util.Enumeration keys()
Returns an enumeration of the keys in this hashtable.
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elements
public java.util.Enumeration elements()
Returns an enumeration of the values in this hashtable. Use the Enumeration methods on the returned object to fetch the elements sequentially.
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contains
public boolean contains(java.lang.Object value)
Tests if some key maps into the specified value in this hashtable. This operation is more expensive than thecontainsKey
method.
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containsKey
public boolean containsKey(java.lang.Object key)
Tests if the specified object is a key in this hashtable.
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get
public java.lang.Object get(java.lang.Object key)
Returns the value to which the specified key is mapped in this hashtable.
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put
public java.lang.Object put(java.lang.Object key, java.lang.Object value)
Maps the specifiedkey
to the specifiedvalue
in this hashtable. Neither the key nor the value can benull
.The value can be retrieved by calling the
get
method with a key that is equal to the original key.
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remove
public java.lang.Object remove(java.lang.Object key)
Removes the key (and its corresponding value) from this hashtable. This method does nothing if the key is not in the hashtable.
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clear
public void clear()
Clears this hashtable so that it contains no keys.
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toString
public java.lang.String toString()
Returns a rather long string representation of this hashtable. Handy for debugging - leave it here!!!- Overrides:
toString
in classjava.lang.Object
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