UnmodifiableIterator

org.apache.commons.collections4.iterators

Class UnmodifiableIterator<E>

java.lang.Object
- org.apache.commons.collections4.iterators.UnmodifiableIterator<E>

All Implemented Interfaces:

Iterator<E>, Unmodifiable
```
public final class UnmodifiableIterator<E>
extends Object
implements Iterator<E>, Unmodifiable
```
Decorates an iterator such that it cannot be modified.
Attempts to modify it will result in an UnsupportedOperationException.

Since:

3.0

Method Summary

All Methods

Static Methods

Instance Methods

Concrete Methods
Modifier and Type	Method and Description
`boolean`	`hasNext()`
`E`	`next()`
`void`	`remove()`
`static <E> Iterator<E>`	`unmodifiableIterator(Iterator<? extends E> iterator)` Decorates the specified iterator such that it cannot be modified.

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

Methods inherited from interface java.util.Iterator
forEachRemaining

- Method Detail
  - unmodifiableIterator
```
public static <E> Iterator<E> unmodifiableIterator(Iterator<? extends E> iterator)
```
    Decorates the specified iterator such that it cannot be modified.
    If the iterator is already unmodifiable it is returned directly.
    
    Type Parameters:
    
    E - the element type
    
    Parameters:
    
    iterator - the iterator to decorate
    
    Returns:
    
    a new unmodifiable iterator
    
    Throws:
    
    NullPointerException - if the iterator is null
  - hasNext
```
public boolean hasNext()
```
  - next
```
public E next()
```
  - remove
```
public void remove()
```