java.lang.Object
- org.apache.commons.collections.collection.AbstractCollectionDecorator
- - org.apache.commons.collections.collection.AbstractSerializableCollectionDecorator
  - - org.apache.commons.collections.collection.UnmodifiableCollection

All Implemented Interfaces:

Serializable, Iterable, Collection, Unmodifiable
```
public final class UnmodifiableCollection
extends AbstractSerializableCollectionDecorator
implements Unmodifiable
```
Decorates another Collection to ensure it can't be altered.
This class is Serializable from Commons Collections 3.1.

Since:

Commons Collections 3.0

Version:

$Revision: 646777 $ $Date: 2008-04-10 14:33:15 +0200 (Thu, 10 Apr 2008) $

Author:

Stephen Colebourne

See Also:

Serialized Form

Field Summary
- Fields inherited from class org.apache.commons.collections.collection.AbstractCollectionDecorator
  collection

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`add(Object object)`
`boolean`	`addAll(Collection coll)`
`void`	`clear()`
`static Collection`	`decorate(Collection coll)`	Factory method to create an unmodifiable collection.
`Iterator`	`iterator()`
`boolean`	`remove(Object object)`
`boolean`	`removeAll(Collection coll)`
`boolean`	`retainAll(Collection coll)`

Methods inherited from class org.apache.commons.collections.collection.AbstractCollectionDecorator
contains, containsAll, equals, getCollection, hashCode, isEmpty, size, toArray, toArray, toString

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Collection
parallelStream, removeIf, spliterator, stream, toArray

Methods inherited from interface java.lang.Iterable
forEach

- Method Detail
  - decorate
```
public static Collection decorate(Collection coll)
```
    Factory method to create an unmodifiable collection.
    If the collection passed in is already unmodifiable, it is returned.
    
    Parameters:
    
    coll - the collection to decorate, must not be null
    
    Returns:
    
    an unmodifiable collection
    
    Throws:
    
    IllegalArgumentException - if collection is null
  - iterator
```
public Iterator iterator()
```
    Specified by:
    
    iterator in interface Collection
    
    Specified by:
    
    iterator in interface Iterable
    
    Overrides:
    
    iterator in class AbstractCollectionDecorator
  - add
```
public boolean add(Object object)
```
    Specified by:
    
    add in interface Collection
    
    Overrides:
    
    add in class AbstractCollectionDecorator
  - addAll
```
public boolean addAll(Collection coll)
```
    Specified by:
    
    addAll in interface Collection
    
    Overrides:
    
    addAll in class AbstractCollectionDecorator
  - clear
```
public void clear()
```
    Specified by:
    
    clear in interface Collection
    
    Overrides:
    
    clear in class AbstractCollectionDecorator
  - remove
```
public boolean remove(Object object)
```
    Specified by:
    
    remove in interface Collection
    
    Overrides:
    
    remove in class AbstractCollectionDecorator
  - removeAll
```
public boolean removeAll(Collection coll)
```
    Specified by:
    
    removeAll in interface Collection
    
    Overrides:
    
    removeAll in class AbstractCollectionDecorator
  - retainAll
```
public boolean retainAll(Collection coll)
```
    Specified by:
    
    retainAll in interface Collection
    
    Overrides:
    
    retainAll in class AbstractCollectionDecorator

Class UnmodifiableCollection

Field Summary

Fields inherited from class org.apache.commons.collections.collection.AbstractCollectionDecorator

Method Summary

Methods inherited from class org.apache.commons.collections.collection.AbstractCollectionDecorator

Methods inherited from class java.lang.Object

Methods inherited from interface java.util.Collection

Methods inherited from interface java.lang.Iterable

Method Detail

decorate

iterator

add

addAll

clear

remove

removeAll

retainAll