UnmodifiableList (TUM CCSM Commons JavaDoc)

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edu.tum.cs.commons.collections
Class UnmodifiableList<E>

java.lang.Object
  edu.tum.cs.commons.collections.UnmodifiableCollection<E>
      edu.tum.cs.commons.collections.UnmodifiableList<E>

All Implemented Interfaces:: Serializable, Iterable<E>, Collection<E>, List<E>

public class UnmodifiableList<E>
extends UnmodifiableCollection<E>
implements List<E>
extends UnmodifiableCollection<E>
implements List<E>

This is a wrapper for a List prohibiting all calls which would modify its contents. As the construction of this class is performed in constant time it is prefered over copying the list (which takes linear time). Using this class is also preferred to using the unmodifiableX() in class Collections as they return the collection base type that does not signal, that the object ist unmodifiable. Using the classes in this package makes unmodifiability more explicit.

All prohibited methods throw an UnsupportedOperationException. The class is nearly the same as the one returned by Collections.unmodifiableList(List), but by making it a public class we can make the return value of some methods more explicit.

This list is serializable if the wrapped list is serializable.

Version:: $Revision: 26283 $
Author:: Benjamin Hummel, $Author: juergens $
See Also:: Serialized Form
Rating:: GREEN Hash: 4B2E02522B37EA43AB9DDF9C28DCC2E1

Constructor Summary
`UnmodifiableList(List<E> l)` Creates a new unmodifiable list from another list.

Method Summary
`void`	`add(int arg0, E arg1)` Operation is not supported.
`boolean`	`addAll(int arg0, Collection<? extends E> arg1)` Operation is not supported.
`E`	`get(int index)`
`int`	`indexOf(Object o)`
`int`	`lastIndexOf(Object o)`
`UnmodifiableListIterator<E>`	`listIterator()`
`UnmodifiableListIterator<E>`	`listIterator(int index)`
`E`	`remove(int arg0)` Operation is not supported.
`E`	`set(int arg0, E arg1)` Operation is not supported.
`List<E>`	`subList(int fromIndex, int toIndex)`

Methods inherited from class edu.tum.cs.commons.collections.UnmodifiableCollection
`add, addAll, clear, contains, containsAll, isEmpty, iterator, remove, removeAll, retainAll, size, toArray, toArray, toString`

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

Methods inherited from interface java.util.List
`add, addAll, clear, contains, containsAll, equals, hashCode, isEmpty, iterator, remove, removeAll, retainAll, size, toArray, toArray`

Constructor Detail