UnmodifiableMapEntry (Apache Commons Collections 4.2 API)

java.lang.Object
- org.apache.commons.collections4.keyvalue.AbstractKeyValue<K,V>
- - org.apache.commons.collections4.keyvalue.AbstractMapEntry<K,V>
  - - org.apache.commons.collections4.keyvalue.UnmodifiableMapEntry<K,V>

All Implemented Interfaces:

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

Since:

3.0

Constructor Summary

Constructors
Constructor	Description
`UnmodifiableMapEntry(Map.Entry<? extends K,? extends V> entry)`	Constructs a new entry from the specified `Map.Entry`.
`UnmodifiableMapEntry(K key, V value)`	Constructs a new entry with the specified key and given value.
`UnmodifiableMapEntry(KeyValue<? extends K,? extends V> pair)`	Constructs a new entry from the specified `KeyValue`.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type Method Description

V setValue(V value)
Throws UnsupportedOperationException.
- Methods inherited from class org.apache.commons.collections4.keyvalue.AbstractMapEntry
  equals, hashCode
- Methods inherited from class org.apache.commons.collections4.keyvalue.AbstractKeyValue
  getKey, getValue, setKey, 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(K key,
                            V 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<? extends K,? extends V> 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<? extends K,? extends V> 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 V setValue(V value)
```
    Throws UnsupportedOperationException.
    
    Specified by:
    
    setValue in interface Map.Entry<K,V>
    
    Overrides:
    
    setValue in class AbstractMapEntry<K,V>
    
    Parameters:
    
    value - the new value
    
    Returns:
    
    the previous value
    
    Throws:
    
    UnsupportedOperationException - always