cn.net.wanmo.common.util

类 CollectionUtil

java.lang.Object

org.apache.commons.collections.CollectionUtils

cn.net.wanmo.common.util.CollectionUtil

public class CollectionUtil
extends org.apache.commons.collections.CollectionUtils

Collection 工具类

字段概要

从类继承的字段 org.apache.commons.collections.CollectionUtils

EMPTY_COLLECTION

构造器概要

构造器

构造器和说明
CollectionUtil()

方法概要

限定符和类型	方法和说明
static boolean	isEmpty(List<?> list) 是否为空
static boolean	isEmpty(Set<?> set) 是否为空
static boolean	isNotEmpty(List<?> list) 是否不为空
static boolean	isNotEmpty(Set<?> set) 是否不为空

从类继承的方法 org.apache.commons.collections.CollectionUtils

addAll, addAll, addAll, addIgnoreNull, cardinality, collect, collect, collect, collect, containsAny, countMatches, disjunction, exists, filter, find, forAllDo, get, getCardinalityMap, index, index, intersection, isEmpty, isEqualCollection, isFull, isNotEmpty, isProperSubCollection, isSubCollection, maxSize, predicatedCollection, removeAll, retainAll, reverseArray, select, select, selectRejected, selectRejected, size, sizeIsEmpty, subtract, synchronizedCollection, transform, transformedCollection, typedCollection, union, unmodifiableCollection

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

CollectionUtil

public CollectionUtil()

方法详细资料

isEmpty

public static boolean isEmpty(List<?> list)

是否为空

参数:

list -

返回:

是否为空

isNotEmpty

public static boolean isNotEmpty(List<?> list)

是否不为空

参数:

list -

返回:

是否不为空

isEmpty

public static boolean isEmpty(Set<?> set)

是否为空

参数:

set -

返回:

是否为空

isNotEmpty

public static boolean isNotEmpty(Set<?> set)

是否不为空

参数:

set -

返回:

是否不为空