cn.hippo4j.common.toolkit

类 CollectionUtil

java.lang.Object

cn.hippo4j.common.toolkit.CollectionUtil

public class CollectionUtil
extends Object

Collection util.

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 <T> T	getFirst(Iterable<T> iterable) Get first.
static boolean	isEmpty(Collection<?> collection) Is empty.
static boolean	isEmpty(Iterator<?> iterator) Is empty.
static boolean	isEmpty(List<?> list) Is empty.
static boolean	isEmpty(Map<?,?> map) Is empty.
static boolean	isNotEmpty(Collection<?> collection) Is not empty.
static boolean	isNotEmpty(Iterator<?> iterator) Is not empty.
static boolean	isNotEmpty(List<?> list) Is not empty.
static boolean	isNotEmpty(Map<?,?> map) 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

CollectionUtil

public CollectionUtil()

方法详细资料

getFirst

public static <T> T getFirst(Iterable<T> iterable)

Get first.

类型参数:

T -

参数:

iterable -

返回:

isEmpty

public static boolean isEmpty(List<?> list)

Is empty.

参数:

list -

返回:

isNotEmpty

public static boolean isNotEmpty(List<?> list)

Is not empty.

参数:

list -

返回:

isEmpty

public static boolean isEmpty(Map<?,?> map)

Is empty.

参数:

map -

返回:

isNotEmpty

public static boolean isNotEmpty(Map<?,?> map)

Is not empty.

参数:

map -

返回:

isEmpty

public static boolean isEmpty(Iterator<?> iterator)

Is empty.

参数:

iterator -

返回:

isNotEmpty

public static boolean isNotEmpty(Iterator<?> iterator)

Is not empty.

参数:

iterator -

返回:

isEmpty

public static boolean isEmpty(Collection<?> collection)

Is empty.

参数:

collection -

返回:

isNotEmpty

public static boolean isNotEmpty(Collection<?> collection)

Is not empty.

参数:

collection -

返回: