com.spring.boxes.dollar

类 CollectionUtils

java.lang.Object

com.spring.boxes.dollar.CollectionUtils

public class CollectionUtils
extends Object

构造器概要

构造器

构造器和说明
CollectionUtils()

方法概要

限定符和类型	方法和说明
static <T> T[]	addAll(T[]... arrays)
static <T> Map<String,T>	getPairMap(List<Map<String,T>> list, String keyName, String valName)
static boolean	isEmpty(Collection<?> coll)
static boolean	isNotEmpty(Collection<?> coll)
static <T> T[]	newArray(Class<?> componentType, int newSize)
static <E> List<E>	ofImmutableList(E... es)
static <E> Set<E>	ofImmutableSet(E... es)
static void	reverseArray(Object[] array)
static int	size(Object object)
static <K,V extends Comparable<? super V>> Map<K,V>	sortByValue(Map<K,V> map)
static <S,D> List	transform(Collection<S> srcList, com.google.common.base.Function<S,D> fun)

从类继承的方法 java.lang.Object

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

构造器详细资料

CollectionUtils

public CollectionUtils()

方法详细资料

isNotEmpty

public static boolean isNotEmpty(Collection<?> coll)

isEmpty

public static boolean isEmpty(Collection<?> coll)

size

public static int size(Object object)

reverseArray

public static void reverseArray(Object[] array)

ofImmutableSet

@SafeVarargs
public static <E> Set<E> ofImmutableSet(E... es)

ofImmutableList

@SafeVarargs
public static <E> List<E> ofImmutableList(E... es)

transform

public static <S,D> List transform(Collection<S> srcList,
                                   com.google.common.base.Function<S,D> fun)

sortByValue

public static <K,V extends Comparable<? super V>> Map<K,V> sortByValue(Map<K,V> map)

addAll

public static <T> T[] addAll(T[]... arrays)

newArray

public static <T> T[] newArray(Class<?> componentType,
                               int newSize)

getPairMap

public static <T> Map<String,T> getPairMap(List<Map<String,T>> list,
                                           String keyName,
                                           String valName)