Java Doc for DefaultKeyValue.java in  » Library » Apache-common-Collections » org » apache » commons » collections » keyvalue » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Library » Apache common Collections » org.apache.commons.collections.keyvalue 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   org.apache.commons.collections.keyvalue.AbstractKeyValue
      org.apache.commons.collections.keyvalue.DefaultKeyValue

DefaultKeyValue
public class DefaultKeyValue extends AbstractKeyValue (Code)
A mutable KeyValue pair that does not implement java.util.Map.Entry Map.Entry .

Note that a DefaultKeyValue instance may not contain itself as a key or value.
since:
   Commons Collections 3.0
version:
   $Revision: 405927 $ $Date: 2006-05-12 23:57:03 +0100 (Fri, 12 May 2006) $
author:
   James Strachan
author:
   Michael A. Smith
author:
   Neil O'Toole
author:
   Stephen Colebourne




Constructor Summary
public  DefaultKeyValue()
     Constructs a new pair with a null key and null value.
public  DefaultKeyValue(Object key, Object value)
     Constructs a new pair with the specified key and given value.
public  DefaultKeyValue(KeyValue pair)
     Constructs a new pair from the specified KeyValue.
public  DefaultKeyValue(Map.Entry entry)
     Constructs a new pair from the specified Map.Entry.

Method Summary
public  booleanequals(Object obj)
     Compares this Map.Entry with another Map.Entry.
public  inthashCode()
     Gets a hashCode compatible with the equals method.
public  ObjectsetKey(Object key)
     Sets the key.
public  ObjectsetValue(Object value)
     Sets the value.
public  Map.EntrytoMapEntry()
     Returns a new Map.Entry object with key and value from this pair.


Constructor Detail
DefaultKeyValue
public DefaultKeyValue()(Code)
Constructs a new pair with a null key and null value.



DefaultKeyValue
public DefaultKeyValue(Object key, Object value)(Code)
Constructs a new pair with the specified key and given value.
Parameters:
  key - the key for the entry, may be null
Parameters:
  value - the value for the entry, may be null



DefaultKeyValue
public DefaultKeyValue(KeyValue pair)(Code)
Constructs a new pair from the specified KeyValue.
Parameters:
  pair - the pair to copy, must not be null
throws:
  NullPointerException - if the entry is null



DefaultKeyValue
public DefaultKeyValue(Map.Entry entry)(Code)
Constructs a new pair from the specified Map.Entry.
Parameters:
  entry - the entry to copy, must not be null
throws:
  NullPointerException - if the entry is null




Method Detail
equals
public boolean equals(Object obj)(Code)
Compares this Map.Entry with another Map.Entry.

Returns true if the compared object is also a DefaultKeyValue, and its key and value are equal to this object's key and value.
Parameters:
  obj - the object to compare to true if equal key and value




hashCode
public int hashCode()(Code)
Gets a hashCode compatible with the equals method.

Implemented per API documentation of java.util.Map.Entry.hashCode , however subclasses may override this. a suitable hash code




setKey
public Object setKey(Object key)(Code)
Sets the key.
Parameters:
  key - the new key the old key
throws:
  IllegalArgumentException - if key is this object



setValue
public Object setValue(Object value)(Code)
Sets the value. the old value of the value
Parameters:
  value - the new value
throws:
  IllegalArgumentException - if value is this object



toMapEntry
public Map.Entry toMapEntry()(Code)
Returns a new Map.Entry object with key and value from this pair. a MapEntry instance



Fields inherited from org.apache.commons.collections.keyvalue.AbstractKeyValue
protected Object key(Code)(Java Doc)
protected Object value(Code)(Java Doc)

Methods inherited from org.apache.commons.collections.keyvalue.AbstractKeyValue
public Object getKey()(Code)(Java Doc)
public Object getValue()(Code)(Java Doc)
public String toString()(Code)(Java Doc)

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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