RetroSearch Browse

Home - News ( United States | United Kingdom | Italy | Germany ) - Football scores

Showing content from https://docs.oracle.com/javase/8/docs/api/java/util/Iterator.html below:

Iterator (Java Platform SE 8 )

Type Parameters:

E - the type of elements returned by this iterator

All Known Subinterfaces:

ListIterator<E>, PrimitiveIterator<T,T_CONS>, PrimitiveIterator.OfDouble, PrimitiveIterator.OfInt, PrimitiveIterator.OfLong, XMLEventReader

All Known Implementing Classes:

BeanContextSupport.BCSIterator, EventReaderDelegate, Scanner
```
public interface Iterator<E>
```
An iterator over a collection.
Iterator
takes the place of
Enumeration
in the Java Collections Framework. Iterators differ from enumerations in two ways:
- Iterators allow the caller to remove elements from the underlying collection during the iteration with well-defined semantics.
- Method names have been improved.
This interface is a member of the Java Collections Framework.

Since:

1.2

See Also:

Collection, ListIterator, Iterable

- Method Summary All Methods Instance Methods Abstract Methods Default Methods Modifier and Type Method Description default void forEachRemaining(Consumer<? super E> action)
  Performs the given action for each remaining element until all elements have been processed or the action throws an exception.
  boolean hasNext()
  Returns true if the iteration has more elements.
  E next()
  Returns the next element in the iteration.
  default void remove()
  Removes from the underlying collection the last element returned by this iterator (optional operation).

- Method Detail
  - hasNext
```
boolean hasNext()
```
    Returns
    true
    if the iteration has more elements. (In other words, returns
    true
    if
    next()
    would return an element rather than throwing an exception.)
    
    Returns:
    
    true if the iteration has more elements
  - next
```
E next()
```
    Returns the next element in the iteration.
    
    Returns:
    
    the next element in the iteration
    
    Throws:
    
    NoSuchElementException - if the iteration has no more elements
  - remove
```
default void remove()
```
    Removes from the underlying collection the last element returned by this iterator (optional operation). This method can be called only once per call to
    next()
    . The behavior of an iterator is unspecified if the underlying collection is modified while the iteration is in progress in any way other than by calling this method.
    
    Implementation Requirements:
    
    The default implementation throws an instance of UnsupportedOperationException and performs no other action.
    
    Throws:
    
    UnsupportedOperationException - if the remove operation is not supported by this iterator
    
    IllegalStateException - if the next method has not yet been called, or the remove method has already been called after the last call to the next method
  - forEachRemaining
```
default void forEachRemaining(Consumer<? super E> action)
```
    Performs the given action for each remaining element until all elements have been processed or the action throws an exception. Actions are performed in the order of iteration, if that order is specified. Exceptions thrown by the action are relayed to the caller.
    Implementation Requirements:
    The default implementation behaves as if:
    
    while (hasNext()) action.accept(next());
    Parameters:
    
    action - The action to be performed for each element
    
    Throws:
    
    NullPointerException - if the specified action is null
    
    Since:
    
    1.8

Submit a bug or feature For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples. Copyright © 1993, 2025, Oracle and/or its affiliates. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.

RetroSearch is an open source project built by @garambo | Open a GitHub Issue

Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo

HTML: 3.2 | Encoding: UTF-8 | Version: 0.7.4