Package com.nimbusds.oauth2.sdk.util

Class CollectionUtils

java.lang.Object

com.nimbusds.oauth2.sdk.util.CollectionUtils

public final class CollectionUtils
extends Object

Collection utilities.

Method Summary

Modifier and Type	Method	Description
static <T> boolean	contains(Collection<T> collection, T item)	Returns true if the specified collection contains the specified item.
static <T> boolean	intersect(Collection<T> a, Collection<T> b)	Returns true if the specified collections intersect.
static boolean	isEmpty(Collection<?> collection)	Returns true if the specified collection is null or empty.
static boolean	isNotEmpty(Collection<?> collection)	Returns true if the specified collection is not empty.

Methods inherited from class java.lang.Object

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

Method Detail

isEmpty

public static boolean isEmpty(Collection<?> collection)

Returns true if the specified collection is null or empty.

Parameters:

collection - The collection. May be null.

Returns:

true if the collection is null or empty, else false.

isNotEmpty

public static boolean isNotEmpty(Collection<?> collection)

Returns true if the specified collection is not empty.

Parameters:

collection - The collection. May be null.

Returns:

true if the collection is not empty, else false.

contains

public static <T> boolean contains(Collection<T> collection,
                                   T item)

Returns true if the specified collection contains the specified item.

Parameters:

collection - The collection. May be null.

item - The item. Should not be null.

Returns:

true if the collection is not empty and contains the item, else false.

intersect

public static <T> boolean intersect(Collection<T> a,
                                    Collection<T> b)

Returns true if the specified collections intersect.

Parameters:

a - The first collection. May be null.

b - The second collection. May be null.

Returns:

true if the collections intersect, else false.