edu.emory.mathcs.backport.java.util

Class AbstractMap.SimpleEntry

java.lang.Object

edu.emory.mathcs.backport.java.util.AbstractMap.SimpleEntry

All Implemented Interfaces:

java.util.Map.Entry

Enclosing class:

AbstractMap

public static class AbstractMap.SimpleEntry
extends java.lang.Object
implements java.util.Map.Entry

An Entry maintaining a key and a value. The value may be changed using the setValue method. This class facilitates the process of building custom map implementations. For example, it may be convenient to return arrays of SimpleEntry instances in method Map.entrySet().toArray

Since:

1.6

Constructor Summary

Constructors

Constructor and Description
AbstractMap.SimpleEntry(java.util.Map.Entry entry) Creates an entry representing the same mapping as the specified entry.
AbstractMap.SimpleEntry(java.lang.Object key, java.lang.Object value) Creates an entry representing a mapping from the specified key to the specified value.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(java.lang.Object o)
java.lang.Object	getKey() Returns the key corresponding to this entry.
java.lang.Object	getValue() Returns the value corresponding to this entry.
int	hashCode()
java.lang.Object	setValue(java.lang.Object value) Replaces the value corresponding to this entry with the specified value.
java.lang.String	toString() Returns a String representation of this map entry.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractMap.SimpleEntry

public AbstractMap.SimpleEntry(java.lang.Object key,
                       java.lang.Object value)

Creates an entry representing a mapping from the specified key to the specified value.

Parameters:

key - the key represented by this entry

value - the value represented by this entry

AbstractMap.SimpleEntry

public AbstractMap.SimpleEntry(java.util.Map.Entry entry)

Creates an entry representing the same mapping as the specified entry.

Parameters:

entry - the entry to copy

Method Detail

getKey

public java.lang.Object getKey()

Returns the key corresponding to this entry.

Specified by:

getKey in interface java.util.Map.Entry

Returns:

the key corresponding to this entry

getValue

public java.lang.Object getValue()

Returns the value corresponding to this entry.

Specified by:

getValue in interface java.util.Map.Entry

Returns:

the value corresponding to this entry

setValue

public java.lang.Object setValue(java.lang.Object value)

Replaces the value corresponding to this entry with the specified value.

Specified by:

setValue in interface java.util.Map.Entry

Parameters:

value - new value to be stored in this entry

Returns:

the old value corresponding to the entry

equals

public boolean equals(java.lang.Object o)

Specified by:

equals in interface java.util.Map.Entry

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Specified by:

hashCode in interface java.util.Map.Entry

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Returns a String representation of this map entry. This implementation returns the string representation of this entry's key followed by the equals character ("=") followed by the string representation of this entry's value.

Overrides:

toString in class java.lang.Object

Returns:

a String representation of this map entry