icu.easyj.core.util

类 MapUtils

java.lang.Object

icu.easyj.core.util.MapUtils

public abstract class MapUtils
extends Object

Map工具类

作者:

wangliang181230

构造器概要

构造器

构造器和说明
MapUtils()

方法概要

限定符和类型	方法和说明
static <K,V> V	computeIfAbsent(Map<K,V> map, K key, Function<? super K,? extends V> mappingFunction) A temporary workaround for Java 8 specific performance issue JDK-8161372 .
static String	toString(Map<?,?> map) Map to string.

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

MapUtils

public MapUtils()

方法详细资料

toString

public static String toString(Map<?,?> map)

Map to string.

参数:

map - the map

返回:

the string

computeIfAbsent

public static <K,V> V computeIfAbsent(Map<K,V> map,
                                      K key,
                                      Function<? super K,? extends V> mappingFunction)

A temporary workaround for Java 8 specific performance issue JDK-8161372 .
This class should be removed once we drop Java 8 support.

类型参数:

K - the type of key

V - the type of value

参数:

map - the map

key - the key

mappingFunction - the mapping function

返回:

the value

另请参阅:

https://bugs.openjdk.java.net/browse/JDK-8161372