org.jboss.ejb3.util
Class CollectionHelper

java.lang.Object
  org.jboss.ejb3.util.CollectionHelper

public class CollectionHelper
extends java.lang.Object

Provide helpful functions for Collection objects.

Constructor Summary

CollectionHelper()

Method Summary

static <E> boolean

addAllIfSet(java.util.Collection<E> target, java.util.Collection<? extends E> c) Adds all of the elements in the specified collection to the target collection if a collection is specified.

Methods inherited from class java.lang.Object

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

Constructor Detail

CollectionHelper

public CollectionHelper()

Method Detail

addAllIfSet

public static <E> boolean addAllIfSet(java.util.Collection<E> target,
                                      java.util.Collection<? extends E> c)

Adds all of the elements in the specified collection to the target collection if a collection is specified.

Type Parameters:

E -

Parameters:

target -

c - collection containing elements to be added to this collection, may be null

Returns:

true if this collection changed as a result of the call