cn.hutool.core.map

Class MapBuilder<K,V>

java.lang.Object

cn.hutool.core.map.MapBuilder<K,V>

Type Parameters:

K - Key类型

V - Value类型

All Implemented Interfaces:

Builder<Map<K,V>>, Serializable

public class MapBuilder<K,V>
extends Object
implements Builder<Map<K,V>>

Map创建类

Since:

3.1.1

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
MapBuilder(Map<K,V> map) 链式Map创建类

Method Summary

Modifier and Type	Method and Description
Map<K,V>	build() 创建后的map
MapBuilder<K,V>	clear() 清空Map
static <K,V> MapBuilder<K,V>	create() 创建Builder，默认HashMap实现
static <K,V> MapBuilder<K,V>	create(boolean isLinked) 创建Builder
static <K,V> MapBuilder<K,V>	create(Map<K,V> map) 创建Builder
String	join(String separator, String keyValueSeparator) 将map转成字符串
String	join(String separator, String keyValueSeparator, boolean isIgnoreNull) 将map转成字符串
String	joinIgnoreNull(String separator, String keyValueSeparator) 将map转成字符串
Map<K,V>	map() 创建后的map
MapBuilder<K,V>	put(boolean condition, K k, Supplier<V> supplier) 链式Map创建
MapBuilder<K,V>	put(boolean condition, K k, V v) 链式Map创建
MapBuilder<K,V>	put(K k, V v) 链式Map创建
MapBuilder<K,V>	putAll(Map<K,V> map) 链式Map创建

Methods inherited from class java.lang.Object

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

Constructor Detail

MapBuilder

public MapBuilder(Map<K,V> map)

链式Map创建类

Parameters:

map - 要使用的Map实现类

Method Detail

create

public static <K,V> MapBuilder<K,V> create()

创建Builder，默认HashMap实现

Type Parameters:

K - Key类型

V - Value类型

Returns:

MapBuilder

Since:

5.3.0

create

public static <K,V> MapBuilder<K,V> create(boolean isLinked)

创建Builder

Type Parameters:

K - Key类型

V - Value类型

Parameters:

isLinked - true创建LinkedHashMap，false创建HashMap

Returns:

MapBuilder

Since:

5.3.0

create

public static <K,V> MapBuilder<K,V> create(Map<K,V> map)

创建Builder

Type Parameters:

K - Key类型

V - Value类型

Parameters:

map - Map实体类

Returns:

MapBuilder

Since:

3.2.3

put

public MapBuilder<K,V> put(K k,
                           V v)

链式Map创建

Parameters:

k - Key类型

v - Value类型

Returns:

当前类

put

public MapBuilder<K,V> put(boolean condition,
                           K k,
                           V v)

链式Map创建

Parameters:

condition - put条件

k - Key类型

v - Value类型

Returns:

当前类

Since:

5.7.5

put

public MapBuilder<K,V> put(boolean condition,
                           K k,
                           Supplier<V> supplier)

链式Map创建

Parameters:

condition - put条件

k - Key类型

supplier - Value类型结果提供方

Returns:

当前类

Since:

5.7.5

putAll

public MapBuilder<K,V> putAll(Map<K,V> map)

链式Map创建

Parameters:

map - 合并map

Returns:

当前类

clear

public MapBuilder<K,V> clear()

清空Map

Returns:

this

Since:

5.7.23

map

public Map<K,V> map()

创建后的map

Returns:

创建后的map

build

public Map<K,V> build()

创建后的map

Specified by:

build in interface Builder<Map<K,V>>

Returns:

创建后的map

Since:

3.3.0

join

public String join(String separator,
                   String keyValueSeparator)

将map转成字符串

Parameters:

separator - entry之间的连接符

keyValueSeparator - kv之间的连接符

Returns:

连接字符串

joinIgnoreNull

public String joinIgnoreNull(String separator,
                             String keyValueSeparator)

将map转成字符串

Parameters:

separator - entry之间的连接符

keyValueSeparator - kv之间的连接符

Returns:

连接后的字符串

join

public String join(String separator,
                   String keyValueSeparator,
                   boolean isIgnoreNull)

将map转成字符串

Parameters:

separator - entry之间的连接符

keyValueSeparator - kv之间的连接符

isIgnoreNull - 是否忽略null的键和值

Returns:

连接后的字符串