com.github.azbh111.utils.java.iterable

类 IterableUtils

java.lang.Object

com.github.azbh111.utils.java.iterable.IterableUtils

public class IterableUtils
extends java.lang.Object

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	IterableUtils.StreamSpliter<T>

构造器概要

构造器

构造器和说明
IterableUtils()

方法概要

限定符和类型	方法和说明
static <Item,Key,Part> void	aggregate(java.lang.Iterable<Item> target, java.util.Map<Key,Part> partMap, java.util.function.Function<Item,Key> keyGetter, java.util.function.BiConsumer<Item,Part> partSetter) 合计
static <Item,Key,Part> void	aggregate(java.util.Map<Key,Item> target, java.lang.Iterable<Part> parts, java.util.function.Function<Part,Key> keyGetter, java.util.function.BiConsumer<Item,Part> partSetter) 合计
static <Item,Key,Part> void	aggregate(java.util.Map<Key,Item> target, java.util.Map<Key,Part> partMap, java.util.function.BiConsumer<Item,Part> partSetter) 合计
static <T> int	batchLoop(java.lang.Iterable<T> it, int batchSize, java.util.function.Consumer<java.util.List<T>> consumer) 批量遍历 用于大批量数据分批处理
static <T> int	batchLoop(java.util.Iterator<T> it, int batchSize, java.util.function.Consumer<java.util.List<T>> consumer) 批量遍历 用于大批量数据分批处理
static <T> int	batchLoop(java.util.stream.Stream<T> stream, int batchSize, java.util.function.Consumer<java.util.List<T>> consumer) 批量遍历
static <T> int	batchLoop(T[] it, int batchSize, java.util.function.Consumer<java.util.List<T>> consumer) 批量遍历 用于大批量数据分批处理
static <T,R,A> R	collect(java.lang.Iterable<T> it, java.util.stream.Collector<? super T,A,R> collector)
static <T,R,A> R	collect(java.util.Iterator<T> it, java.util.stream.Collector<? super T,A,R> collector)
static <T,R,A> R	collect(java.util.stream.Stream<? extends T> it, java.util.stream.Collector<? super T,A,R> collector)
static <T,R,A> R	collect(T[] it, java.util.stream.Collector<? super T,A,R> collector)
static <T> int	count(java.lang.Iterable<T> iterable) 对Iterable进行计数
static <T> int	count(java.util.Iterator<T> iterator) 对Iterator进行计数 会将该Iterator剩余元素全部遍历一次
static <T,K> DifferenceView<java.util.List<T>>	difference(java.util.List<T> leftList, java.util.List<T> rightList) 对比两个集合的差异
static <T,K> DifferenceView<java.util.List<T>>	difference(java.util.List<T> leftList, java.util.List<T> rightList, java.util.function.Function<T,K> identityMapper) 对比两个集合的差异
static <T> DifferenceView<java.util.Set<T>>	difference(java.util.Set<T> leftList, java.util.Set<T> rightList) 对比两个集合的差异
static <T,K> DifferenceView<java.util.Set<T>>	difference(java.util.Set<T> leftList, java.util.Set<T> rightList, java.util.function.Function<T,K> identityMapper) 对比两个集合的差异
static <T> void	distinct(java.lang.Iterable<T> it) 去重
static <T,K> void	distinct(java.lang.Iterable<T> it, java.util.function.Function<T,K> distinctKey) 去重
static <T> java.util.List<T>	filter(java.lang.Iterable<T> it, java.util.function.Predicate<T> test)
static <T> java.util.Optional<T>	findFirst(java.lang.Iterable<T> it, java.util.function.Predicate<T> test)
static <T,R> java.util.List<R>	flatToList(java.lang.Iterable<? extends T> it, java.util.function.Function<? super T,java.lang.Iterable<R>> func)
static <T,R> java.util.List<R>	flatToList(java.util.stream.Stream<? extends T> it, java.util.function.Function<? super T,java.lang.Iterable<R>> func)
static <T,R> java.util.List<R>	flatToList(T[] it, java.util.function.Function<? super T,java.lang.Iterable<R>> func)
static <T,R> java.util.Set<R>	flatToSet(java.lang.Iterable<? extends T> it, java.util.function.Function<? super T,java.lang.Iterable<R>> func)
static <T,R> java.util.Set<R>	flatToSet(java.util.stream.Stream<? extends T> it, java.util.function.Function<? super T,java.lang.Iterable<R>> func)
static <T,R> java.util.Set<R>	flatToSet(T[] it, java.util.function.Function<? super T,java.lang.Iterable<R>> func)
static <T> void	forEach(java.util.function.Consumer<T> consumer, java.lang.Iterable<T>... its)
static <T> T	getFirstElement(java.lang.Iterable<T> it) 返回集合第一个元素(无序集合返回值不固定)
static <T> T	getLastElement(java.lang.Iterable<T> it) 获取最后一个元素
static <T,K,V> java.util.Map<K,java.util.List<V>>	groupingBy(java.lang.Iterable<? extends T> it, java.util.function.Function<? super T,? extends K> keyMapper, java.util.function.Function<? super T,? extends V> valueMapper)
static <T,R> java.util.Map<R,java.util.List<T>>	groupingBy(java.lang.Iterable<? extends T> it, java.util.function.Function<? super T,? extends R> keyMapper)
static <T,K,V> java.util.Map<K,java.util.List<V>>	groupingBy(java.util.Iterator<? extends T> it, java.util.function.Function<? super T,? extends K> keyMapper, java.util.function.Function<? super T,? extends V> valueMapper)
static <T,R> java.util.Map<R,java.util.List<T>>	groupingBy(java.util.Iterator<? extends T> it, java.util.function.Function<? super T,? extends R> keyMapper)
static <T,K,V> java.util.Map<K,java.util.List<V>>	groupingBy(java.util.stream.Stream<? extends T> it, java.util.function.Function<? super T,? extends K> keyMapper, java.util.function.Function<? super T,? extends V> valueMapper)
static <T,R> java.util.Map<R,java.util.List<T>>	groupingBy(java.util.stream.Stream<? extends T> it, java.util.function.Function<? super T,? extends R> keyMapper)
static <T,K,V> java.util.Map<K,java.util.List<V>>	groupingBy(java.util.stream.Stream<? extends T> it, java.util.Map<K,java.util.List<V>> resultContainer, java.util.function.Function<? super T,? extends K> keyMapper, java.util.function.Function<? super T,? extends V> valueMapper)
static <T,K,V> java.util.Map<K,java.util.List<V>>	groupingBy(T[] it, java.util.function.Function<? super T,? extends K> keyMapper, java.util.function.Function<? super T,? extends V> valueMapper)
static <T,R> java.util.Map<R,java.util.List<T>>	groupingBy(T[] it, java.util.function.Function<? super T,? extends R> keyMapper)
static <T> boolean	isNotNullOrEmpty(java.lang.Iterable<? extends T> it)
static <T> boolean	isNullOrEmpty(java.lang.Iterable<? extends T> it)
static <K,V> java.util.Iterator<V>	mapIterator(java.util.Iterator<K> source, java.util.function.Function<K,V> mapper) 将Iterator包装一下, 对每个元素进行转换, 返回转换后的Iterator, 结果是懒加载的
static <T extends java.lang.Comparable> T	max(java.lang.Iterable<? extends T> it)
static <T> T	max(java.lang.Iterable<T> it, java.util.Comparator<T> comparator)
static <T extends java.lang.Comparable> T	max(java.util.stream.Stream<? extends T> it)
static <T> T	max(java.util.stream.Stream<T> it, java.util.Comparator<T> comparator)
static <T extends java.lang.Comparable> T	max(T[] it)
static <T> T	max(T[] it, java.util.Comparator<T> comparator)
static <T> MergedLazyIterator<T>	mergeIterator(java.util.Iterator<java.util.Iterator<T>> sources) 将多个Iterator合并成1个, 合并结果是懒加载的
static <T> MergedLazyIterator<T>	mergeLazyIterator(java.util.Iterator<java.util.function.Supplier<java.util.Iterator<T>>> sources) 将多个Supplier合并成1个, 合并结果是懒加载的
static <T extends java.lang.Comparable> T	min(java.lang.Iterable<? extends T> it)
static <T> T	min(java.lang.Iterable<T> it, java.util.Comparator<T> comparator)
static <T extends java.lang.Comparable> T	min(java.util.stream.Stream<? extends T> it)
static <T> T	min(java.util.stream.Stream<T> it, java.util.Comparator<T> comparator)
static <T extends java.lang.Comparable> T	min(T[] it)
static <T> T	min(T[] it, java.util.Comparator<T> comparator)
static <T,K> java.util.List<T>	sortByKeys(java.lang.Iterable<T> list, java.util.Collection<K> sortedKeys, java.util.function.Function<T,K> keyMapper) 按照给定的顺序排序 sortedKeys中没有的元素,会被过滤掉
static <T> java.util.List<java.util.List<T>>	splitBatch(java.lang.Iterable<T> it, int batchSize) 拆分集合
static <T> java.util.List<java.util.List<T>>	splitBatch(java.util.Iterator<T> it, int batchSize) 拆分集合
static <T> java.util.List<java.util.List<T>>	splitBatch(java.util.stream.Stream<T> it, int batchSize) 拆分集合
static <T> java.util.List<java.util.List<T>>	splitBatch(T[] it, int batchSize) 拆分数组
static <T> java.util.stream.Stream<java.util.List<T>>	splitBatchStream(java.lang.Iterable<T> it, int batchSize) 拆分集合,返回Stream 用于大批量数据分批处理
static <T> java.util.stream.Stream<java.util.List<T>>	splitBatchStream(java.util.Iterator<T> it, int batchSize) 拆分集合,返回Stream 用于大批量数据分批处理
static <T> java.util.stream.Stream<java.util.List<T>>	splitBatchStream(java.util.stream.Stream<T> it, int batchSize) 拆分集合,返回Stream 用于大批量数据分批处理 结果是懒加载的
static <T> java.util.stream.Stream<java.util.List<T>>	splitBatchStream(T[] it, int batchSize) 拆分集合,返回Stream 用于大批量数据分批处理
static <T> void	sum(java.lang.Iterable<T> it, T container, java.util.function.Predicate<java.lang.reflect.Field> fieldFilter, ObjectSumFunction<T> sumFunction) 合并对象
static <T,K> java.util.Map<K,T>	sumByKey(java.lang.Iterable<T> it, java.util.function.Predicate<java.lang.reflect.Field> fieldFilter, ObjectSumFunction<T> sumFunction, java.util.function.Function<T,K> keyMapper) 分组合并
static <T,K> java.util.Map<K,T>	sumByKey(java.util.Iterator<T> it, java.util.function.Predicate<java.lang.reflect.Field> fieldFilter, ObjectSumFunction<T> sumFunction, java.util.function.Function<T,K> keyMapper) 分组合并
static <T,K> java.util.Map<K,T>	sumByKey(java.util.stream.Stream<T> it, java.util.function.Predicate<java.lang.reflect.Field> fieldFilter, ObjectSumFunction<T> sumFunction, java.util.function.Function<T,K> keyMapper) 分组合并
static <T> java.util.List<T>	toDistinctedList(java.lang.Iterable<? extends T> it)
static <T,R> java.util.List<R>	toDistinctedList(java.lang.Iterable<? extends T> it, java.util.function.Function<? super T,R> func)
static <T,R> java.util.List<R>	toDistinctedList(java.util.stream.Stream<? extends T> it, java.util.function.Function<? super T,R> func)
static <T,R> java.util.List<T>	toDistinctedListBy(java.lang.Iterable<? extends T> it, java.util.function.Function<? super T,R> func)
static <T,R> java.util.List<T>	toDistinctedListBy(java.util.stream.Stream<? extends T> it, java.util.function.Function<? super T,R> func)
static <T> java.util.List<T>	toList(java.lang.Iterable<? extends T> it)
static <T,R> java.util.List<R>	toList(java.lang.Iterable<? extends T> it, java.util.function.Function<? super T,R> func)
static <T> java.util.List<T>	toList(java.util.stream.Stream<? extends T> it)
static <T,R> java.util.List<R>	toList(java.util.stream.Stream<? extends T> it, java.util.function.Function<? super T,R> func)
static <T> java.util.List<T>	toList(T[] it)
static <T,R> java.util.List<R>	toList(T[] it, java.util.function.Function<? super T,R> func)
static <T,R> java.util.Map<R,T>	toMap(java.lang.Iterable<? extends T> it, java.util.function.Function<? super T,? extends R> keyMapper)
static <T,R,X> java.util.Map<R,X>	toMap(java.lang.Iterable<? extends T> it, java.util.function.Function<? super T,? extends R> keyMapper, java.util.function.Function<? super T,? extends X> valueMapper)
static <T,R> java.util.Map<R,T>	toMap(java.util.stream.Stream<? extends T> it, java.util.function.Function<? super T,? extends R> keyMapper)
static <T,R,X> java.util.Map<R,X>	toMap(java.util.stream.Stream<? extends T> it, java.util.function.Function<? super T,? extends R> keyMapper, java.util.function.Function<? super T,? extends X> valueMapper)
static <T,R> java.util.Map<R,T>	toMap(T[] it, java.util.function.Function<? super T,? extends R> keyMapper)
static <T,R,X> java.util.Map<R,X>	toMap(T[] it, java.util.function.Function<? super T,? extends R> keyMapper, java.util.function.Function<? super T,? extends X> valueMapper)
static <T> java.util.Set<T>	toSet(java.lang.Iterable<? extends T> it)
static <T,R> java.util.Set<R>	toSet(java.lang.Iterable<? extends T> it, java.util.function.Function<? super T,? extends R> func)
static <T,R> java.util.Set<R>	toSet(java.lang.Iterable<? extends T> it, java.util.function.Function<? super T,? extends R> func, java.util.function.Predicate<? super T> predicate)
static <T> java.util.Set<T>	toSet(java.util.stream.Stream<? extends T> it)
static <T,R> java.util.Set<R>	toSet(java.util.stream.Stream<? extends T> it, java.util.function.Function<? super T,? extends R> func)
static <T,R> java.util.Set<R>	toSet(java.util.stream.Stream<? extends T> it, java.util.function.Function<? super T,? extends R> func, java.util.function.Predicate<? super T> predicate)
static <T> java.util.Set<T>	toSet(T[] it)
static <T,R> java.util.Set<R>	toSet(T[] it, java.util.function.Function<? super T,? extends R> func)
static <T> java.util.stream.Stream<T>	toStream(java.lang.Iterable<T> it, java.lang.Iterable<T>... its)
static <T> java.util.stream.Stream<T>	toStream(java.util.Iterator<T> it, java.util.Iterator<T>... its)
static <T> java.util.stream.Stream<T>	toStream(java.util.stream.Stream<T> s, java.util.stream.Stream<T>... ss)
static <T> java.util.stream.Stream<T>	toStream(T[] it, T[]... its)

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

IterableUtils

public IterableUtils()

方法详细资料

mapIterator

public static <K,V> java.util.Iterator<V> mapIterator(java.util.Iterator<K> source,
                                                      java.util.function.Function<K,V> mapper)

将Iterator包装一下, 对每个元素进行转换, 返回转换后的Iterator, 结果是懒加载的

参数:

source - source

mapper - mapper

返回:

java.util.Iterator

从以下版本开始:

2021/7/27 17:56

mergeLazyIterator

public static <T> MergedLazyIterator<T> mergeLazyIterator(java.util.Iterator<java.util.function.Supplier<java.util.Iterator<T>>> sources)

将多个Supplier合并成1个, 合并结果是懒加载的

参数:

sources - sources

返回:

com.github.azbh111.utils.java.iterable.model.MergedLazyIterator

从以下版本开始:

2021/7/27 17:55

mergeIterator

public static <T> MergedLazyIterator<T> mergeIterator(java.util.Iterator<java.util.Iterator<T>> sources)

将多个Iterator合并成1个, 合并结果是懒加载的

参数:

sources - sources

返回:

com.github.azbh111.utils.java.iterable.model.MergedLazyIterator

从以下版本开始:

2021/7/27 17:54

splitBatch

public static <T> java.util.List<java.util.List<T>> splitBatch(T[] it,
                                                               int batchSize)

拆分数组

参数:

it - it

batchSize - batchSize

返回:

java.util.List>

从以下版本开始:

2020/11/26 18:44

splitBatch

public static <T> java.util.List<java.util.List<T>> splitBatch(java.lang.Iterable<T> it,
                                                               int batchSize)

拆分集合

参数:

it - it

batchSize - batchSize

返回:

java.util.List>

从以下版本开始:

2020/11/26 18:44

splitBatch

public static <T> java.util.List<java.util.List<T>> splitBatch(java.util.Iterator<T> it,
                                                               int batchSize)

拆分集合

参数:

it - it

batchSize - batchSize

返回:

java.util.List>

从以下版本开始:

2020/11/26 18:44

splitBatch

public static <T> java.util.List<java.util.List<T>> splitBatch(java.util.stream.Stream<T> it,
                                                               int batchSize)

拆分集合

参数:

it - it

batchSize - batchSize

返回:

java.util.List>

从以下版本开始:

2020/11/26 18:44

splitBatchStream

public static <T> java.util.stream.Stream<java.util.List<T>> splitBatchStream(java.util.stream.Stream<T> it,
                                                                              int batchSize)

拆分集合,返回Stream 用于大批量数据分批处理 结果是懒加载的

类型参数:

T -

参数:

it -

batchSize -

返回:

splitBatchStream

public static <T> java.util.stream.Stream<java.util.List<T>> splitBatchStream(T[] it,
                                                                              int batchSize)

拆分集合,返回Stream 用于大批量数据分批处理

类型参数:

T -

参数:

it -

batchSize -

返回:

splitBatchStream

public static <T> java.util.stream.Stream<java.util.List<T>> splitBatchStream(java.lang.Iterable<T> it,
                                                                              int batchSize)

拆分集合,返回Stream 用于大批量数据分批处理

类型参数:

T -

参数:

it -

batchSize -

返回:

splitBatchStream

public static <T> java.util.stream.Stream<java.util.List<T>> splitBatchStream(java.util.Iterator<T> it,
                                                                              int batchSize)

拆分集合,返回Stream 用于大批量数据分批处理

类型参数:

T -

参数:

it -

batchSize -

返回:

batchLoop

public static <T> int batchLoop(T[] it,
                                int batchSize,
                                @Nonnull
                                java.util.function.Consumer<java.util.List<T>> consumer)

批量遍历 用于大批量数据分批处理

参数:

stream - stream

batchSize - batchSize

consumer - consumer

返回:

int 遍历条数

从以下版本开始:

2020/11/26 18:42

batchLoop

public static <T> int batchLoop(java.lang.Iterable<T> it,
                                int batchSize,
                                @Nonnull
                                java.util.function.Consumer<java.util.List<T>> consumer)

批量遍历 用于大批量数据分批处理

参数:

it - it

batchSize - batchSize

consumer - consumer

返回:

int 遍历条数

从以下版本开始:

2020/11/30 16:05

batchLoop

public static <T> int batchLoop(java.util.Iterator<T> it,
                                int batchSize,
                                @Nonnull
                                java.util.function.Consumer<java.util.List<T>> consumer)

批量遍历 用于大批量数据分批处理

参数:

stream - stream

batchSize - batchSize

consumer - consumer

返回:

void

从以下版本开始:

2020/11/26 18:42

batchLoop

public static <T> int batchLoop(java.util.stream.Stream<T> stream,
                                int batchSize,
                                @Nonnull
                                java.util.function.Consumer<java.util.List<T>> consumer)

批量遍历

参数:

stream - stream

batchSize - batchSize

consumer - consumer

返回:

int 遍历条数

从以下版本开始:

2020/11/26 18:42

sortByKeys

public static <T,K> java.util.List<T> sortByKeys(@Nullable
                                                 java.lang.Iterable<T> list,
                                                 @Nonnull
                                                 java.util.Collection<K> sortedKeys,
                                                 @Nonnull
                                                 java.util.function.Function<T,K> keyMapper)

按照给定的顺序排序 sortedKeys中没有的元素,会被过滤掉

类型参数:

T -

K -

参数:

list - 经过keyMapper映射,不能用重复的key

sortedKeys -

keyMapper -

返回:

排序后的集合

sum

public static <T> void sum(java.lang.Iterable<T> it,
                           @Nonnull
                           T container,
                           java.util.function.Predicate<java.lang.reflect.Field> fieldFilter,
                           @Nonnull
                           ObjectSumFunction<T> sumFunction)

合并对象

类型参数:

T -

参数:

it -

container -

fieldFilter -

sumFunction -

sumByKey

public static <T,K> java.util.Map<K,T> sumByKey(java.lang.Iterable<T> it,
                                                java.util.function.Predicate<java.lang.reflect.Field> fieldFilter,
                                                @Nonnull
                                                ObjectSumFunction<T> sumFunction,
                                                @Nonnull
                                                java.util.function.Function<T,K> keyMapper)

分组合并

类型参数:

T -

参数:

it -

container -

fieldFilter -

sumFunction -

sumByKey

public static <T,K> java.util.Map<K,T> sumByKey(java.util.Iterator<T> it,
                                                java.util.function.Predicate<java.lang.reflect.Field> fieldFilter,
                                                @Nonnull
                                                ObjectSumFunction<T> sumFunction,
                                                @Nonnull
                                                java.util.function.Function<T,K> keyMapper)

分组合并

类型参数:

T -

参数:

it -

container -

fieldFilter -

sumFunction -

sumByKey

public static <T,K> java.util.Map<K,T> sumByKey(java.util.stream.Stream<T> it,
                                                java.util.function.Predicate<java.lang.reflect.Field> fieldFilter,
                                                @Nonnull
                                                ObjectSumFunction<T> sumFunction,
                                                @Nonnull
                                                java.util.function.Function<T,K> keyMapper)

分组合并

类型参数:

T -

参数:

it -

container -

fieldFilter -

sumFunction -

count

public static <T> int count(java.util.Iterator<T> iterator)

对Iterator进行计数 会将该Iterator剩余元素全部遍历一次

类型参数:

T -

参数:

iterator -

返回:

count

public static <T> int count(java.lang.Iterable<T> iterable)

对Iterable进行计数

类型参数:

T -

参数:

iterable -

返回:

difference

public static <T> DifferenceView<java.util.Set<T>> difference(java.util.Set<T> leftList,
                                                              java.util.Set<T> rightList)

对比两个集合的差异

类型参数:

T -

参数:

leftList -

rightList -

返回:

difference

public static <T,K> DifferenceView<java.util.Set<T>> difference(java.util.Set<T> leftList,
                                                                java.util.Set<T> rightList,
                                                                java.util.function.Function<T,K> identityMapper)

对比两个集合的差异

类型参数:

T -

K -

参数:

leftList -

rightList -

identityMapper -

返回:

difference

public static <T,K> DifferenceView<java.util.List<T>> difference(java.util.List<T> leftList,
                                                                 java.util.List<T> rightList)

对比两个集合的差异

类型参数:

T -

K -

参数:

leftList -

rightList -

返回:

difference

public static <T,K> DifferenceView<java.util.List<T>> difference(java.util.List<T> leftList,
                                                                 java.util.List<T> rightList,
                                                                 java.util.function.Function<T,K> identityMapper)

对比两个集合的差异

类型参数:

T -

K -

参数:

leftList -

rightList -

identityMapper -

返回:

forEach

public static <T> void forEach(java.util.function.Consumer<T> consumer,
                               java.lang.Iterable<T>... its)

distinct

public static <T> void distinct(java.lang.Iterable<T> it)

去重

类型参数:

T -

参数:

it -

distinct

public static <T,K> void distinct(java.lang.Iterable<T> it,
                                  java.util.function.Function<T,K> distinctKey)

去重

类型参数:

T -

K -

参数:

it -

distinctKey -

isNullOrEmpty

public static <T> boolean isNullOrEmpty(java.lang.Iterable<? extends T> it)

isNotNullOrEmpty

public static <T> boolean isNotNullOrEmpty(java.lang.Iterable<? extends T> it)

getLastElement

public static <T> T getLastElement(java.lang.Iterable<T> it)

获取最后一个元素

类型参数:

T -

参数:

it -

返回:

getFirstElement

public static <T> T getFirstElement(java.lang.Iterable<T> it)

返回集合第一个元素(无序集合返回值不固定)

类型参数:

T -

参数:

it -

返回:

filter

public static <T> java.util.List<T> filter(java.lang.Iterable<T> it,
                                           java.util.function.Predicate<T> test)

findFirst

public static <T> java.util.Optional<T> findFirst(java.lang.Iterable<T> it,
                                                  java.util.function.Predicate<T> test)

aggregate

public static <Item,Key,Part> void aggregate(java.util.Map<Key,Item> target,
                                             java.util.Map<Key,Part> partMap,
                                             java.util.function.BiConsumer<Item,Part> partSetter)

合计

类型参数:

Item -

Key -

Part -

参数:

target -

partMap -

partSetter -

aggregate

public static <Item,Key,Part> void aggregate(java.util.Map<Key,Item> target,
                                             java.lang.Iterable<Part> parts,
                                             java.util.function.Function<Part,Key> keyGetter,
                                             java.util.function.BiConsumer<Item,Part> partSetter)

合计

类型参数:

Item -

Key -

Part -

参数:

target -

parts -

keyGetter -

partSetter -

aggregate

public static <Item,Key,Part> void aggregate(java.lang.Iterable<Item> target,
                                             java.util.Map<Key,Part> partMap,
                                             java.util.function.Function<Item,Key> keyGetter,
                                             java.util.function.BiConsumer<Item,Part> partSetter)

合计

类型参数:

Item -

Key -

Part -

参数:

target -

partMap -

keyGetter -

partSetter -

groupingBy

public static <T,R> java.util.Map<R,java.util.List<T>> groupingBy(java.lang.Iterable<? extends T> it,
                                                                  java.util.function.Function<? super T,? extends R> keyMapper)

groupingBy

public static <T,R> java.util.Map<R,java.util.List<T>> groupingBy(java.util.Iterator<? extends T> it,
                                                                  java.util.function.Function<? super T,? extends R> keyMapper)

groupingBy

public static <T,R> java.util.Map<R,java.util.List<T>> groupingBy(T[] it,
                                                                  java.util.function.Function<? super T,? extends R> keyMapper)

groupingBy

public static <T,R> java.util.Map<R,java.util.List<T>> groupingBy(java.util.stream.Stream<? extends T> it,
                                                                  java.util.function.Function<? super T,? extends R> keyMapper)

groupingBy

public static <T,K,V> java.util.Map<K,java.util.List<V>> groupingBy(java.lang.Iterable<? extends T> it,
                                                                    java.util.function.Function<? super T,? extends K> keyMapper,
                                                                    java.util.function.Function<? super T,? extends V> valueMapper)

groupingBy

public static <T,K,V> java.util.Map<K,java.util.List<V>> groupingBy(java.util.Iterator<? extends T> it,
                                                                    java.util.function.Function<? super T,? extends K> keyMapper,
                                                                    java.util.function.Function<? super T,? extends V> valueMapper)

groupingBy

public static <T,K,V> java.util.Map<K,java.util.List<V>> groupingBy(T[] it,
                                                                    java.util.function.Function<? super T,? extends K> keyMapper,
                                                                    java.util.function.Function<? super T,? extends V> valueMapper)

groupingBy

public static <T,K,V> java.util.Map<K,java.util.List<V>> groupingBy(java.util.stream.Stream<? extends T> it,
                                                                    java.util.function.Function<? super T,? extends K> keyMapper,
                                                                    java.util.function.Function<? super T,? extends V> valueMapper)

groupingBy

public static <T,K,V> java.util.Map<K,java.util.List<V>> groupingBy(java.util.stream.Stream<? extends T> it,
                                                                    java.util.Map<K,java.util.List<V>> resultContainer,
                                                                    java.util.function.Function<? super T,? extends K> keyMapper,
                                                                    java.util.function.Function<? super T,? extends V> valueMapper)

collect

public static <T,R,A> R collect(T[] it,
                                java.util.stream.Collector<? super T,A,R> collector)

collect

public static <T,R,A> R collect(java.lang.Iterable<T> it,
                                java.util.stream.Collector<? super T,A,R> collector)

collect

public static <T,R,A> R collect(java.util.Iterator<T> it,
                                java.util.stream.Collector<? super T,A,R> collector)

collect

public static <T,R,A> R collect(java.util.stream.Stream<? extends T> it,
                                java.util.stream.Collector<? super T,A,R> collector)

toSet

public static <T> java.util.Set<T> toSet(java.lang.Iterable<? extends T> it)

toSet

public static <T> java.util.Set<T> toSet(T[] it)

toSet

public static <T> java.util.Set<T> toSet(java.util.stream.Stream<? extends T> it)

toSet

public static <T,R> java.util.Set<R> toSet(java.lang.Iterable<? extends T> it,
                                           java.util.function.Function<? super T,? extends R> func)

toSet

public static <T,R> java.util.Set<R> toSet(java.lang.Iterable<? extends T> it,
                                           java.util.function.Function<? super T,? extends R> func,
                                           java.util.function.Predicate<? super T> predicate)

toSet

public static <T,R> java.util.Set<R> toSet(T[] it,
                                           java.util.function.Function<? super T,? extends R> func)

toSet

public static <T,R> java.util.Set<R> toSet(java.util.stream.Stream<? extends T> it,
                                           java.util.function.Function<? super T,? extends R> func)

toSet

public static <T,R> java.util.Set<R> toSet(java.util.stream.Stream<? extends T> it,
                                           java.util.function.Function<? super T,? extends R> func,
                                           java.util.function.Predicate<? super T> predicate)

flatToList

public static <T,R> java.util.List<R> flatToList(java.lang.Iterable<? extends T> it,
                                                 java.util.function.Function<? super T,java.lang.Iterable<R>> func)

flatToList

public static <T,R> java.util.List<R> flatToList(T[] it,
                                                 java.util.function.Function<? super T,java.lang.Iterable<R>> func)

flatToList

public static <T,R> java.util.List<R> flatToList(java.util.stream.Stream<? extends T> it,
                                                 java.util.function.Function<? super T,java.lang.Iterable<R>> func)

flatToSet

public static <T,R> java.util.Set<R> flatToSet(java.lang.Iterable<? extends T> it,
                                               java.util.function.Function<? super T,java.lang.Iterable<R>> func)

flatToSet

public static <T,R> java.util.Set<R> flatToSet(T[] it,
                                               java.util.function.Function<? super T,java.lang.Iterable<R>> func)

flatToSet

public static <T,R> java.util.Set<R> flatToSet(java.util.stream.Stream<? extends T> it,
                                               java.util.function.Function<? super T,java.lang.Iterable<R>> func)

toList

public static <T> java.util.List<T> toList(java.lang.Iterable<? extends T> it)

toList

public static <T> java.util.List<T> toList(T[] it)

toList

public static <T> java.util.List<T> toList(java.util.stream.Stream<? extends T> it)

toList

public static <T,R> java.util.List<R> toList(java.lang.Iterable<? extends T> it,
                                             java.util.function.Function<? super T,R> func)

toList

public static <T,R> java.util.List<R> toList(T[] it,
                                             java.util.function.Function<? super T,R> func)

toList

public static <T,R> java.util.List<R> toList(java.util.stream.Stream<? extends T> it,
                                             java.util.function.Function<? super T,R> func)

toDistinctedList

public static <T> java.util.List<T> toDistinctedList(java.lang.Iterable<? extends T> it)

toDistinctedList

public static <T,R> java.util.List<R> toDistinctedList(java.lang.Iterable<? extends T> it,
                                                       java.util.function.Function<? super T,R> func)

toDistinctedList

public static <T,R> java.util.List<R> toDistinctedList(java.util.stream.Stream<? extends T> it,
                                                       java.util.function.Function<? super T,R> func)

toDistinctedListBy

public static <T,R> java.util.List<T> toDistinctedListBy(java.lang.Iterable<? extends T> it,
                                                         java.util.function.Function<? super T,R> func)

toDistinctedListBy

public static <T,R> java.util.List<T> toDistinctedListBy(java.util.stream.Stream<? extends T> it,
                                                         java.util.function.Function<? super T,R> func)

toMap

public static <T,R> java.util.Map<R,T> toMap(java.lang.Iterable<? extends T> it,
                                             java.util.function.Function<? super T,? extends R> keyMapper)

toMap

public static <T,R> java.util.Map<R,T> toMap(T[] it,
                                             java.util.function.Function<? super T,? extends R> keyMapper)

toMap

public static <T,R> java.util.Map<R,T> toMap(java.util.stream.Stream<? extends T> it,
                                             java.util.function.Function<? super T,? extends R> keyMapper)

toMap

public static <T,R,X> java.util.Map<R,X> toMap(java.lang.Iterable<? extends T> it,
                                               java.util.function.Function<? super T,? extends R> keyMapper,
                                               java.util.function.Function<? super T,? extends X> valueMapper)

toMap

public static <T,R,X> java.util.Map<R,X> toMap(T[] it,
                                               java.util.function.Function<? super T,? extends R> keyMapper,
                                               java.util.function.Function<? super T,? extends X> valueMapper)

toMap

public static <T,R,X> java.util.Map<R,X> toMap(java.util.stream.Stream<? extends T> it,
                                               java.util.function.Function<? super T,? extends R> keyMapper,
                                               java.util.function.Function<? super T,? extends X> valueMapper)

toStream

public static <T> java.util.stream.Stream<T> toStream(java.util.Iterator<T> it,
                                                      java.util.Iterator<T>... its)

toStream

public static <T> java.util.stream.Stream<T> toStream(java.lang.Iterable<T> it,
                                                      java.lang.Iterable<T>... its)

toStream

public static <T> java.util.stream.Stream<T> toStream(T[] it,
                                                      T[]... its)

toStream

public static <T> java.util.stream.Stream<T> toStream(java.util.stream.Stream<T> s,
                                                      java.util.stream.Stream<T>... ss)

max

public static <T extends java.lang.Comparable> T max(java.lang.Iterable<? extends T> it)

max

public static <T extends java.lang.Comparable> T max(T[] it)

max

public static <T extends java.lang.Comparable> T max(java.util.stream.Stream<? extends T> it)

max

public static <T> T max(java.lang.Iterable<T> it,
                        java.util.Comparator<T> comparator)

max

public static <T> T max(T[] it,
                        java.util.Comparator<T> comparator)

max

public static <T> T max(java.util.stream.Stream<T> it,
                        java.util.Comparator<T> comparator)

min

public static <T extends java.lang.Comparable> T min(java.lang.Iterable<? extends T> it)

min

public static <T extends java.lang.Comparable> T min(T[] it)

min

public static <T extends java.lang.Comparable> T min(java.util.stream.Stream<? extends T> it)

min

public static <T> T min(java.lang.Iterable<T> it,
                        java.util.Comparator<T> comparator)

min

public static <T> T min(T[] it,
                        java.util.Comparator<T> comparator)

min

public static <T> T min(java.util.stream.Stream<T> it,
                        java.util.Comparator<T> comparator)