Package eu.bandm.tools.util

Class LookaheadIterator<T>

java.lang.Object

eu.bandm.tools.util.LookaheadIterator<T>

All Implemented Interfaces:

Iterator<T>

public class LookaheadIterator<T>
extends Object
implements Iterator<T>

An iterator which allows arbitrary deep look-ahead for an underlying iterator.

Constructor Summary

Constructors

Constructor	Description
LookaheadIterator(Iterable<? extends T> things)	Constructor which sets the underlying iterator.
LookaheadIterator(Iterator<? extends T> it)
LookaheadIterator(T... things)	Constructor which iterates over the given things.

Method Summary

Modifier and Type	Method	Description
boolean	hasNext()
boolean	hasNext(int index)	Returns whether the next (index+1) calls to hasNext() will be successful.
T	lookahead(int index)	Returns the object delivered by the last of (index+1) calls of next(), as defined with the original iterator.
T	next()
void	remove()	Unsupported Operation

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

Constructor Details

LookaheadIterator

public LookaheadIterator(Iterable<? extends T> things)

Constructor which sets the underlying iterator.

LookaheadIterator

@SafeVarargs
public LookaheadIterator(T... things)

Constructor which iterates over the given things.

LookaheadIterator

public LookaheadIterator(Iterator<? extends T> it)

Method Details

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<T>

next

public T next()

Specified by:

next in interface Iterator<T>

remove

public void remove()

Unsupported Operation

Specified by:

remove in interface Iterator<T>

hasNext

public boolean hasNext(int index)

Returns whether the next (index+1) calls to hasNext() will be successful.

lookahead

public T lookahead(int index)

Returns the object delivered by the last of (index+1) calls of next(), as defined with the original iterator.