Package com.ibm.wala.util.collections

Class NonNullSingletonIterator<T>

java.lang.Object

com.ibm.wala.util.collections.NonNullSingletonIterator<T>

All Implemented Interfaces:

Iterator<T>

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

A singleton iterator for an object which is guaranteed to be not-null. Exploiting this invariant allows this class to be slightly more efficient than Collections.iterator()

Constructor Summary

Constructors

Constructor	Description
NonNullSingletonIterator(@Nullable T o)

Method Summary

Modifier and Type	Method	Description
boolean	hasNext()
static <T> NonNullSingletonIterator<T>	make(T item)
T	next()
void	remove()

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

NonNullSingletonIterator

public NonNullSingletonIterator(@Nullable T o)

Parameters:

o - the single object in this collection, must be non-null

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()
            throws UnsupportedOperationException

Specified by:

remove in interface Iterator<T>

Throws:

UnsupportedOperationException

make

public static <T> NonNullSingletonIterator<T> make(T item)