de.caff.generics

Class ConcatenatedIterators<T>

java.lang.Object

de.caff.generics.ConcatenatedIterators<T>

Type Parameters:

T - type of iterator

All Implemented Interfaces:

java.util.Iterator<T>

public class ConcatenatedIterators<T>
extends java.lang.Object
implements java.util.Iterator<T>

Concatenated iterators.

This allows to iterate over several iterators one after the other in one iteration. It just provides a view and does no additional copying.

This class is not thread-safe!

Since:

August.04, 2016

Author:

Rammi

Constructor Summary

Constructors

Constructor and Description
ConcatenatedIterators(java.lang.Iterable<? extends java.util.Iterator<? extends T>> iterators) Constructor.
ConcatenatedIterators(java.util.Iterator<? extends T>... iterators) Constructor.

Method Summary

Modifier and Type	Method and Description
boolean	hasNext() Returns true if the iteration has more elements.
T	next() Returns the next element in the iteration.

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, remove

Constructor Detail

ConcatenatedIterators

@SafeVarargs
public ConcatenatedIterators(java.util.Iterator<? extends T>... iterators)

Constructor.

Parameters:

iterators - iterators to iterate over

See Also:

Types.concat(Iterator[])

ConcatenatedIterators

public ConcatenatedIterators(@NotNull
                             java.lang.Iterable<? extends java.util.Iterator<? extends T>> iterators)

Constructor.

Parameters:

iterators - iterators to iterate over

See Also:

Types.concatIterators(Iterable)

Method Detail

hasNext

public 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.)

Specified by:

hasNext in interface java.util.Iterator<T>

Returns:

true if the iteration has more elements

next

public T next()

Returns the next element in the iteration.

Specified by:

next in interface java.util.Iterator<T>

Returns:

the next element in the iteration

Throws:

java.util.NoSuchElementException - if the iteration has no more elements