java8.lang

Class Iterables

java.lang.Object

java8.lang.Iterables

public final class Iterables
extends java.lang.Object

A place for static default implementations of the new Java 8 default interface methods and static interface methods in the Iterable interface.

Method Summary

Modifier and Type	Method and Description
static <T> void	forEach(java.lang.Iterable<? extends T> it, Consumer<? super T> action) Performs the given action for each element of the Iterable until all elements have been processed or the action throws an exception.
static <T> Spliterator<T>	spliterator(java.lang.Iterable<? extends T> it) Creates a Spliterator over the elements described by this Iterable.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

forEach

public static <T> void forEach(java.lang.Iterable<? extends T> it,
                               Consumer<? super T> action)

Performs the given action for each element of the Iterable until all elements have been processed or the action throws an exception. Unless otherwise specified by the implementing class, actions are performed in the order of iteration (if an iteration order is specified). Exceptions thrown by the action are relayed to the caller.

Implementation Requirements:

The default implementation behaves as if:

     for (T t : this)
         action.accept(t);
 

Type Parameters:

T - the type of elements of the Iterable

Parameters:

it - the Iterable to call forEach on

action - The action to be performed for each element

Throws:

java.lang.NullPointerException - if the specified action is null

Since:

1.8

spliterator

public static <T> Spliterator<T> spliterator(java.lang.Iterable<? extends T> it)

Creates a Spliterator over the elements described by this Iterable.

Implementation Requirements:
The default implementation creates an early-binding spliterator from the iterable's Iterator. The spliterator inherits the fail-fast properties of the iterable's iterator.

Implementation Note:
The default implementation should usually be overridden. The spliterator returned by the default implementation has poor splitting capabilities, is unsized, and does not report any spliterator characteristics. Implementing classes can nearly always provide a better implementation.

Type Parameters:

T - the type of elements of the Iterable.

Parameters:

it - the Iterable for which the Spliterator should be created.

Returns:

a Spliterator over the elements described by this Iterable.

Since:

1.8