cn.wensiqun.asmsupport.core.utils.collections

类 CollectionUtils

java.lang.Object

cn.wensiqun.asmsupport.core.utils.collections.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

方法

限定符和类型	方法和说明
static <T> void	addAll(Collection<T> collection, Iterator<T> iterator) Adds all elements in the iteration to the given collection.
static <T> void	addAll(Collection<T> collection, T[] elements) Adds all elements in the array to the given collection.
static boolean	isEmpty(Collection<?> coll) Null-safe check if the specified collection is empty.
static boolean	isNotEmpty(Collection<?> coll) Null-safe check if the specified collection is not empty.

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

addAll

public static <T> void addAll(Collection<T> collection,
              Iterator<T> iterator)

Adds all elements in the iteration to the given collection.

参数:

collection - the collection to add to, must not be null

iterator - the iterator of elements to add, must not be null

抛出:

NullPointerException - if the collection or iterator is null

addAll

public static <T> void addAll(Collection<T> collection,
              T[] elements)

Adds all elements in the array to the given collection.

参数:

collection - the collection to add to, must not be null

elements - the array of elements to add, must not be null

抛出:

NullPointerException - if the collection or array is null

isEmpty

public static boolean isEmpty(Collection<?> coll)

Null-safe check if the specified collection is empty.

Null returns true.

参数:

coll - the collection to check, may be null

返回:

true if empty or null

从以下版本开始:

Commons Collections 3.2

isNotEmpty

public static boolean isNotEmpty(Collection<?> coll)

Null-safe check if the specified collection is not empty.

Null returns false.

参数:

coll - the collection to check, may be null

返回:

true if non-null and non-empty

从以下版本开始:

Commons Collections 3.2