gnu.trove.impl.hash

Class THashIterator<V>

java.lang.Object

gnu.trove.impl.hash.THashIterator<V>

All Implemented Interfaces:

TIterator, java.util.Iterator<V>

Direct Known Subclasses:

TObjectHashIterator

public abstract class THashIterator<V>
extends java.lang.Object
implements TIterator, java.util.Iterator<V>

Implements all iterator functions for the hashed object set. Subclasses may override objectAtIndex to vary the object returned by calls to next() (e.g. for values, and Map.Entry objects).

Note that iteration is fastest if you forego the calls to hasNext in favor of checking the size of the structure yourself and then call next() that many times:

 Iterator i = collection.iterator();
 for (int size = collection.size(); size-- > 0;) {
   Object o = i.next();
 }
 

You may, of course, use the hasNext(), next() idiom too if you aren't in a performance critical spot.

Method Summary

Modifier and Type	Method and Description
boolean	hasNext() Returns true if the iterator can be advanced past its current location.
V	next() Moves the iterator to the next Object and returns it.
void	remove() Removes the last entry returned by the iterator.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining

Method Detail

next

public V next()

Moves the iterator to the next Object and returns it.

Specified by:

next in interface java.util.Iterator<V>

Returns:

an Object value

Throws:

java.util.ConcurrentModificationException - if the structure was changed using a method that isn't on this iterator.

java.util.NoSuchElementException - if this is called on an exhausted iterator.

hasNext

public boolean hasNext()

Returns true if the iterator can be advanced past its current location.

Specified by:

hasNext in interface TIterator

Specified by:

hasNext in interface java.util.Iterator<V>

Returns:

a boolean value

remove

public void remove()

Removes the last entry returned by the iterator. Invoking this method more than once for a single entry will leave the underlying data structure in a confused state.

Specified by:

remove in interface TIterator

Specified by:

remove in interface java.util.Iterator<V>