com.liferay.portal.kernel.util

Class ListUtil

Object

com.liferay.portal.kernel.util.ListUtil

public class ListUtil
extends Object

Author:

Brian Wing Shun Chan, Shuyang Zhou

Constructor Summary

Constructors

Constructor and Description
ListUtil()

Method Summary

Modifier and Type	Method and Description
static <E> List<E>	concat(List<? extends E>... lists)
static <E> List<E>	copy(List<? extends E> master)
static <E> void	copy(List<? extends E> master, List<? super E> copy)
static <E> int	count(List<? extends E> list, Predicate<E> predicate)
static void	distinct(List<?> list)
static <E> void	distinct(List<? extends E> list, Comparator<E> comparator)
static <E> boolean	exists(List<? extends E> list, Predicate<E> predicate)
static <T> List<T>	filter(List<? extends T> inputList, List<T> outputList, Predicate<T> predicate)
static <T> List<T>	filter(List<? extends T> inputList, Predicate<T> predicate)
static <E> List<E>	fromArray(E[] array)
static <E> List<E>	fromCollection(Collection<? extends E> c)
static <E> List<E>	fromEnumeration(Enumeration<? extends E> enu)
static List<String>	fromFile(File file)
static List<String>	fromFile(String fileName)
static <E> List<E>	fromMapKeys(Map<? extends E,?> map)
static <E> List<E>	fromMapValues(Map<?,? extends E> map)
static List<String>	fromString(String s)
static List<String>	fromString(String s, String delimiter)
static boolean	isEmpty(List<?> list)
static boolean	isNotEmpty(List<?> list)
static boolean	isNotNull(List<?> list)
static boolean	isNull(List<?> list)
static boolean	isUnmodifiableList(List<?> list)
static <E> List<E>	remove(List<E> list, List<? extends E> remove)
static <E> Iterator<E>	reverseIterator(List<E> list)
static <E> List<E>	sort(List<E> list)
static <E> List<E>	sort(List<E> list, Comparator<? super E> comparator)
static <E> List<E>	subList(List<E> list, int start, int end)
static <T,A> A[]	toArray(List<? extends T> list, Accessor<T,A> accessor)
static List<Boolean>	toList(boolean[] array)
static List<Character>	toList(char[] array)
static List<Double>	toList(double[] array)
static <E> List<E>	toList(E value)
static <E> List<E>	toList(E[] array)
static List<Float>	toList(float[] array)
static List<Integer>	toList(int[] array)
static <T,A> List<A>	toList(List<T> list, Accessor<T,A> accessor)
static <T,R> List<R>	toList(List<T> list, Function<T,R> function)
static <T,V extends T> List<T>	toList(List<V> vlist)
static List<Long>	toList(long[] array)
static List<Short>	toList(short[] array)
static <T> long[]	toLongArray(List<? extends T> list, Accessor<T,Long> accessor)
static <T> long[]	toLongArray(List<? extends T> list, ToLongFunction<T> toLongFunction)
static String	toString(List<?> list, String param)
static String	toString(List<?> list, String param, String delimiter)
static <T,A> String	toString(List<? extends T> list, Accessor<T,A> accessor)
static <T,A> String	toString(List<? extends T> list, Accessor<T,A> accessor, String delimiter)
static <T> List<T>	unique(List<T> list)

Methods inherited from class Object

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

Constructor Detail

ListUtil

public ListUtil()

Method Detail

concat

public static <E> List<E> concat(List<? extends E>... lists)

copy

public static <E> List<E> copy(List<? extends E> master)

copy

public static <E> void copy(List<? extends E> master,
                            List<? super E> copy)

count

public static <E> int count(List<? extends E> list,
                            Predicate<E> predicate)

distinct

public static <E> void distinct(List<? extends E> list,
                                Comparator<E> comparator)

distinct

public static void distinct(List<?> list)

exists

public static <E> boolean exists(List<? extends E> list,
                                 Predicate<E> predicate)

filter

public static <T> List<T> filter(List<? extends T> inputList,
                                 List<T> outputList,
                                 Predicate<T> predicate)

filter

public static <T> List<T> filter(List<? extends T> inputList,
                                 Predicate<T> predicate)

fromArray

public static <E> List<E> fromArray(E[] array)

fromCollection

public static <E> List<E> fromCollection(Collection<? extends E> c)

fromEnumeration

public static <E> List<E> fromEnumeration(Enumeration<? extends E> enu)

fromFile

public static List<String> fromFile(File file)
                             throws IOException

Throws:

IOException

fromFile

public static List<String> fromFile(String fileName)
                             throws IOException

Throws:

IOException

fromMapKeys

public static <E> List<E> fromMapKeys(Map<? extends E,?> map)

fromMapValues

public static <E> List<E> fromMapValues(Map<?,? extends E> map)

fromString

public static List<String> fromString(String s)

fromString

public static List<String> fromString(String s,
                                      String delimiter)

isEmpty

public static boolean isEmpty(List<?> list)

isNotEmpty

public static boolean isNotEmpty(List<?> list)

isNotNull

public static boolean isNotNull(List<?> list)

isNull

public static boolean isNull(List<?> list)

isUnmodifiableList

public static boolean isUnmodifiableList(List<?> list)

remove

public static <E> List<E> remove(List<E> list,
                                 List<? extends E> remove)

reverseIterator

public static <E> Iterator<E> reverseIterator(List<E> list)

sort

public static <E> List<E> sort(List<E> list)

sort

public static <E> List<E> sort(List<E> list,
                               Comparator<? super E> comparator)

subList

public static <E> List<E> subList(List<E> list,
                                  int start,
                                  int end)

toArray

public static <T,A> A[] toArray(List<? extends T> list,
                                Accessor<T,A> accessor)

toList

public static List<Boolean> toList(boolean[] array)

toList

public static List<Character> toList(char[] array)

toList

public static List<Double> toList(double[] array)

toList

public static <E> List<E> toList(E value)

toList

public static <E> List<E> toList(E[] array)

toList

public static List<Float> toList(float[] array)

toList

public static List<Integer> toList(int[] array)

toList

public static <T,A> List<A> toList(List<T> list,
                                   Accessor<T,A> accessor)

toList

public static <T,R> List<R> toList(List<T> list,
                                   Function<T,R> function)

toList

public static <T,V extends T> List<T> toList(List<V> vlist)

toList

public static List<Long> toList(long[] array)

toList

public static List<Short> toList(short[] array)

toLongArray

public static <T> long[] toLongArray(List<? extends T> list,
                                     Accessor<T,Long> accessor)

toLongArray

public static <T> long[] toLongArray(List<? extends T> list,
                                     ToLongFunction<T> toLongFunction)

toString

public static <T,A> String toString(List<? extends T> list,
                                    Accessor<T,A> accessor)

See Also:

ArrayUtil.toString(Object[], Accessor)

toString

public static <T,A> String toString(List<? extends T> list,
                                    Accessor<T,A> accessor,
                                    String delimiter)

See Also:

ArrayUtil.toString(Object[], Accessor, String)

toString

public static String toString(List<?> list,
                              String param)

See Also:

ArrayUtil.toString(Object[], String)

toString

public static String toString(List<?> list,
                              String param,
                              String delimiter)

See Also:

ArrayUtil.toString(Object[], String, String)

unique

public static <T> List<T> unique(List<T> list)