se.unlogic.standardutils.collections
Class CollectionUtils

java.lang.Object
  se.unlogic.standardutils.collections.CollectionUtils

public class CollectionUtils
extends java.lang.Object

Constructor Summary

CollectionUtils()

Method Summary

static <T> java.util.List<T>	conjunction(java.util.Collection<T> c1, java.util.Collection<T> c2)
static <T> java.util.Collection<T>	exclusiveDisjunction(java.util.Collection<T> c1, java.util.Collection<T> c2) Returns the part of a disjunction of two collections that comes from the first collection (in argument order)
static <T> java.util.List<T>	getGenericList(java.lang.Class<T> clazz)
static <T> java.util.List<T>	getGenericList(java.lang.Class<T> clazz, int size)
static <T> java.util.List<T>	getGenericSingletonList(T bean)
static <T> java.util.List<T>	getList(T... objects)
static int	getSize(java.util.Collection<?> collection)
static boolean	isEmpty(java.util.Collection<?> collection)
static void	removeNullValues(java.util.List<?> list)

Methods inherited from class java.lang.Object

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

Constructor Detail

CollectionUtils

public CollectionUtils()

Method Detail

getGenericList

public static <T> java.util.List<T> getGenericList(java.lang.Class<T> clazz,
                                                   int size)

getGenericList

public static <T> java.util.List<T> getGenericList(java.lang.Class<T> clazz)

getGenericSingletonList

public static <T> java.util.List<T> getGenericSingletonList(T bean)

isEmpty

public static boolean isEmpty(java.util.Collection<?> collection)

conjunction

public static <T> java.util.List<T> conjunction(java.util.Collection<T> c1,
                                                java.util.Collection<T> c2)

exclusiveDisjunction

public static <T> java.util.Collection<T> exclusiveDisjunction(java.util.Collection<T> c1,
                                                               java.util.Collection<T> c2)

Returns the part of a disjunction of two collections that comes from the first collection (in argument order)

Type Parameters:

T -

Parameters:

c1 - Collection of objects

c2 - Collection of objects

Returns:

all elements that exists exclusively in c1

getList

public static <T> java.util.List<T> getList(T... objects)

removeNullValues

public static void removeNullValues(java.util.List<?> list)

getSize

public static int getSize(java.util.Collection<?> collection)

Parameters:

list -

Returns:

the size of the collection or 0 if the collection is null