org.jupiter.common.util

类 Maps

java.lang.Object

org.jupiter.common.util.Maps

public final class Maps
extends Object

Static utility methods pertaining to Map instances. jupiter org.jupiter.common.util

作者:

jiachun.fjc

方法概要

方法

限定符和类型	方法和说明
static <K,V> ConcurrentMap<K,V>	newConcurrentMap() Creates a mutable, empty ConcurrentMap instance.
static <K,V> ConcurrentMap<K,V>	newConcurrentMap(int initialCapacity) Creates a ConcurrentMap instance, with a high enough "initial capacity" that it should hold expectedSize elements without growth.
static <V> ConcurrentMap<Long,V>	newConcurrentMapLong() Creates a mutable, empty NonBlockingHashMapLong instance.
static <V> ConcurrentMap<Long,V>	newConcurrentMapLong(int initialCapacity) Creates a NonBlockingHashMapLong instance, with a high enough "initial capacity" that it should hold expectedSize elements without growth.
static <K,V> HashMap<K,V>	newHashMap() Creates a mutable, empty HashMap instance.
static <K,V> HashMap<K,V>	newHashMapWithExpectedSize(int expectedSize) Creates a HashMap instance, with a high enough "initial capacity" that it should hold expectedSize elements without growth.
static <K,V> IdentityHashMap<K,V>	newIdentityHashMap() Creates an IdentityHashMap instance.
static <K,V> IdentityHashMap<K,V>	newIdentityHashMapWithExpectedSize(int expectedSize) Creates an IdentityHashMap instance, with a high enough "initial capacity" that it should hold expectedSize elements without growth.
static <K,V> LinkedHashMap<K,V>	newLinkedHashMap() Creates a mutable, empty, insertion-ordered LinkedHashMap instance.
static <K extends Comparable,V> TreeMap<K,V>	newTreeMap() Creates a mutable, empty TreeMap instance using the natural ordering of its elements.

从类继承的方法 java.lang.Object

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

方法详细资料

newHashMap

public static <K,V> HashMap<K,V> newHashMap()

Creates a mutable, empty HashMap instance.

newHashMapWithExpectedSize

public static <K,V> HashMap<K,V> newHashMapWithExpectedSize(int expectedSize)

Creates a HashMap instance, with a high enough "initial capacity" that it should hold expectedSize elements without growth.

newIdentityHashMap

public static <K,V> IdentityHashMap<K,V> newIdentityHashMap()

Creates an IdentityHashMap instance.

newIdentityHashMapWithExpectedSize

public static <K,V> IdentityHashMap<K,V> newIdentityHashMapWithExpectedSize(int expectedSize)

Creates an IdentityHashMap instance, with a high enough "initial capacity" that it should hold expectedSize elements without growth.

newLinkedHashMap

public static <K,V> LinkedHashMap<K,V> newLinkedHashMap()

Creates a mutable, empty, insertion-ordered LinkedHashMap instance.

newTreeMap

public static <K extends Comparable,V> TreeMap<K,V> newTreeMap()

Creates a mutable, empty TreeMap instance using the natural ordering of its elements.

newConcurrentMap

public static <K,V> ConcurrentMap<K,V> newConcurrentMap()

Creates a mutable, empty ConcurrentMap instance.

newConcurrentMap

public static <K,V> ConcurrentMap<K,V> newConcurrentMap(int initialCapacity)

Creates a ConcurrentMap instance, with a high enough "initial capacity" that it should hold expectedSize elements without growth.

newConcurrentMapLong

public static <V> ConcurrentMap<Long,V> newConcurrentMapLong()

Creates a mutable, empty NonBlockingHashMapLong instance.

newConcurrentMapLong

public static <V> ConcurrentMap<Long,V> newConcurrentMapLong(int initialCapacity)

Creates a NonBlockingHashMapLong instance, with a high enough "initial capacity" that it should hold expectedSize elements without growth.