UnmodifiableMapEntry (Apache Commons Collections 3.2.2 API)

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java.lang.Object
- org.apache.commons.collections.keyvalue.AbstractKeyValue
- - org.apache.commons.collections.keyvalue.AbstractMapEntry
  - - org.apache.commons.collections.keyvalue.UnmodifiableMapEntry

All Implemented Interfaces:

Map.Entry, KeyValue, Unmodifiable
```
public final class UnmodifiableMapEntry
extends AbstractMapEntry
implements Unmodifiable
```
A Map.Entry that throws UnsupportedOperationException when setValue is called.

Since:

Commons Collections 3.0

Version:

$Revision: 972404 $ $Date: 2008-04-10 14:33:15 +0200 (Thu, 10 Apr 2008) $

Author:

Stephen Colebourne

Field Summary
- Fields inherited from class org.apache.commons.collections.keyvalue.AbstractKeyValue
  key, value

Constructor Summary

Constructors
Constructor and Description
`UnmodifiableMapEntry(KeyValue pair)` Constructs a new entry from the specified `KeyValue`.
`UnmodifiableMapEntry(Map.Entry entry)` Constructs a new entry from the specified `Map.Entry`.
`UnmodifiableMapEntry(Object key, Object value)` Constructs a new entry with the specified key and given value.

Method Summary

Methods
Modifier and Type Method and Description

Object setValue(Object value)
Throws UnsupportedOperationException.
- Methods inherited from class org.apache.commons.collections.keyvalue.AbstractMapEntry
  equals, hashCode
- Methods inherited from class org.apache.commons.collections.keyvalue.AbstractKeyValue
  getKey, getValue, toString
- Methods inherited from class java.lang.Object
  clone, finalize, getClass, notify, notifyAll, wait, wait, wait
- Methods inherited from interface java.util.Map.Entry
  getKey, getValue

- Constructor Detail
  - UnmodifiableMapEntry
```
public UnmodifiableMapEntry(Object key,
                    Object value)
```
    Constructs a new entry with the specified key and given value.
    
    Parameters:
    key - the key for the entry, may be null
    value - the value for the entry, may be null
  - UnmodifiableMapEntry
```
public UnmodifiableMapEntry(KeyValue pair)
```
    Constructs a new entry from the specified KeyValue.
    
    Parameters:
    pair - the pair to copy, must not be null
    
    Throws:
    
    NullPointerException - if the entry is null
  - UnmodifiableMapEntry
```
public UnmodifiableMapEntry(Map.Entry entry)
```
    Constructs a new entry from the specified Map.Entry.
    
    Parameters:
    entry - the entry to copy, must not be null
    
    Throws:
    
    NullPointerException - if the entry is null
- Method Detail
  - setValue
```
public Object setValue(Object value)
```
    Throws UnsupportedOperationException.
    
    Specified by:
    
    setValue in interface Map.Entry
    
    Overrides:
    
    setValue in class AbstractMapEntry
    
    Parameters:
    value - the new value
    
    Returns:
    the previous value
    
    Throws:
    
    UnsupportedOperationException - always

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