Top Constructors Methods
com.mchange.v1.util

public abstract Class AbstractMapEntry

extends Object
implements Entry
Class Inheritance
All Implemented Interfaces
java.util.Map.Entry
Known Direct Subclasses
com.mchange.v1.util.SimpleMapEntry, com.mchange.v2.util.DoubleWeakHashMap.UserEntry, com.mchange.v1.identicator.IdMap.UserEntry
Imports
java.util.Map, com.mchange.v2.lang.ObjectUtils

Constructor Summary

AccessConstructor and Description
public
AbstractMapEntry()

Method Summary

Modifier and TypeMethod and Description
public boolean
equals(Object
object to be compared for equality with this map entry
o)

Overrides java.lang.Object.equals.

Implements java.util.Map.Entry.equals.

Compares the specified object with this entry for equality.

public abstract Object
getKey()

Redeclares java.util.Map.Entry.getKey.

Returns the key corresponding to this entry.

public abstract Object
getValue()

Redeclares java.util.Map.Entry.getValue.

Returns the value corresponding to this entry.

public int
hashCode()

Overrides java.lang.Object.hashCode.

Implements java.util.Map.Entry.hashCode.

Returns the hash code value for this map entry.

public abstract Object
setValue(Object
new value to be stored in this entry
value)

Redeclares java.util.Map.Entry.setValue.

Replaces the value corresponding to this entry with the specified value (optional operation).

Inherited from java.lang.Object:
clonefinalizegetClassnotifynotifyAlltoStringwaitwaitwait

Constructor Detail

AbstractMapEntryback to summary
public AbstractMapEntry()

Method Detail

equalsback to summary
public boolean equals(Object o)

Overrides java.lang.Object.equals.

Implements java.util.Map.Entry.equals.

Doc from java.util.Map.Entry.equals.

Compares the specified object with this entry for equality. Returns true if the given object is also a map entry and the two entries represent the same mapping. More formally, two entries e1 and e2 represent the same mapping if

    (e1.getKey()==null ?
     e2.getKey()==null : e1.getKey().equals(e2.getKey()))  &&
    (e1.getValue()==null ?
     e2.getValue()==null : e1.getValue().equals(e2.getValue()))
This ensures that the equals method works properly across different implementations of the Map.Entry interface.
Parameters
o:Object

object to be compared for equality with this map entry

Returns:boolean

true if the specified object is equal to this map entry

getKeyback to summary
public abstract Object getKey()

Redeclares java.util.Map.Entry.getKey.

Doc from java.util.Map.Entry.getKey.

Returns the key corresponding to this entry.

Returns:Object

the key corresponding to this entry

getValueback to summary
public abstract Object getValue()

Redeclares java.util.Map.Entry.getValue.

Doc from java.util.Map.Entry.getValue.

Returns the value corresponding to this entry. If the mapping has been removed from the backing map (by the iterator's remove operation), the results of this call are undefined.

Returns:Object

the value corresponding to this entry

hashCodeback to summary
public int hashCode()

Overrides java.lang.Object.hashCode.

Implements java.util.Map.Entry.hashCode.

Doc from java.util.Map.Entry.hashCode.

Returns the hash code value for this map entry. The hash code of a map entry e is defined to be: 

    (e.getKey()==null   ? 0 : e.getKey().hashCode()) ^
    (e.getValue()==null ? 0 : e.getValue().hashCode())
This ensures that e1.equals(e2) implies that e1.hashCode()==e2.hashCode() for any two Entries e1 and e2, as required by the general contract of Object.hashCode.
Returns:int

the hash code value for this map entry

setValueback to summary
public abstract Object setValue(Object value)

Redeclares java.util.Map.Entry.setValue.

Doc from java.util.Map.Entry.setValue.

Replaces the value corresponding to this entry with the specified value (optional operation). (Writes through to the map.) The behavior of this call is undefined if the mapping has already been removed from the map (by the iterator's remove operation).

Parameters
value:Object

new value to be stored in this entry

Returns:Object

old value corresponding to the entry