java.util

Class AbstractMap.SimpleImmutableEntry<K,V>

java.lang.Object

java.util.AbstractMap.SimpleImmutableEntry<K,V>

Type Parameters:

K - the type of key

V - the type of value

All Implemented Interfaces:

Map.Entry<K,V>

Enclosing class:

AbstractMap<K,V>

public static class AbstractMap.SimpleImmutableEntry<K,V>
extends Object
implements Map.Entry<K,V>

An immutable key-value mapping.

Since:

1.6

Constructor Summary

Constructors

Constructor and Description
SimpleImmutableEntry(K theKey, V theValue) Constructs a new instance by key and value.
SimpleImmutableEntry(Map.Entry<? extends K,? extends V> entry) Constructs a new instance by an entry

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object object) Answers whether the object is equal to this entry.
K	getKey() Returns the key.
V	getValue() Returns the value.
int	hashCode() Answers the hash code of this entry.
V	setValue(V object) Throws an UnsupportedOperationException.
String	toString() Answers a String representation of this entry.

Methods inherited from class java.lang.Object

clone, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

SimpleImmutableEntry

public SimpleImmutableEntry(K theKey,
                            V theValue)

Constructs a new instance by key and value.

Parameters:

theKey - the key

theValue - the value

SimpleImmutableEntry

public SimpleImmutableEntry(Map.Entry<? extends K,? extends V> entry)

Constructs a new instance by an entry

Parameters:

entry - the entry

Method Detail

getKey

public K getKey()

Returns the key.

Specified by:

getKey in interface Map.Entry<K,V>

Returns:

the key

See Also:

Map.Entry.getKey()

getValue

public V getValue()

Returns the value.

Specified by:

getValue in interface Map.Entry<K,V>

Returns:

the value

See Also:

Map.Entry.getValue()

setValue

public V setValue(V object)

Throws an UnsupportedOperationException.

Specified by:

setValue in interface Map.Entry<K,V>

Parameters:

object - new value

Returns:

(Does not)

Throws:

UnsupportedOperationException - always

See Also:

Map.Entry.setValue(java.lang.Object)

equals

public boolean equals(Object object)

Answers whether the object is equal to this entry. This works across all kinds of the Map.Entry interface.

Specified by:

equals in interface Map.Entry<K,V>

Overrides:

equals in class Object

Parameters:

object - the Object to compare with this Object.

Returns:

true if the specified Object is equal to this Map.Entry, false otherwise.

See Also:

Object.equals(java.lang.Object)

hashCode

public int hashCode()

Answers the hash code of this entry.

Specified by:

hashCode in interface Map.Entry<K,V>

Overrides:

hashCode in class Object

Returns:

the receiver's hash code.

See Also:

Object.hashCode()

toString

public String toString()

Answers a String representation of this entry.

Overrides:

toString in class Object

See Also:

Object.toString()