jtp.util
Class DevNullCollection

java.lang.Object
  |
  +--java.util.AbstractCollection
        |
        +--java.util.AbstractSet
              |
              +--jtp.util.DevNullCollection

All Implemented Interfaces:

Collection, Set

public class DevNullCollection

extends AbstractSet

a collection that is always empty; objects that are being added to it just get dropped.

Field Summary

static DevNullCollection

instance

Method Summary

boolean	add(Object o) this version does nothing.
Iterator	iterator()
int	size()

Methods inherited from class java.util.AbstractSet

equals, hashCode, removeAll

Methods inherited from class java.util.AbstractCollection

addAll, clear, contains, containsAll, isEmpty, remove, retainAll, toArray, toArray, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Set

addAll, clear, contains, containsAll, isEmpty, remove, retainAll, toArray, toArray

Field Detail

instance

public static final DevNullCollection instance

Method Detail

iterator

public Iterator iterator()

Specified by:

iterator in interface Set

Specified by:

iterator in class AbstractCollection

size

public int size()

Specified by:

size in interface Set

Specified by:

size in class AbstractCollection

add

public boolean add(Object o)

this version does nothing.

Specified by:

add in interface Set

Overrides:

add in class AbstractCollection