Package org.miaixz.bus.core.center.iterator

Class FilterIterator<E>

java.lang.Object

org.miaixz.bus.core.center.iterator.FilterIterator<E>

Type Parameters:

E - 元素类型

All Implemented Interfaces:

Iterator<E>

public class FilterIterator<E>
extends Object
implements Iterator<E>

包装 Iterator并根据Predicate定义，过滤元素输出 类实现来自Apache Commons Collection

Since:

Java 17+

Author:

Kimi Liu

Constructor Summary

Constructors

Constructor	Description
FilterIterator(Iterator<? extends E> iterator, Predicate<? super E> filter)	构造

Method Summary

Modifier and Type	Method	Description
Predicate<? super E>	getFilter()	获取过滤函数
Iterator<? extends E>	getIterator()	获取被包装的Iterator
boolean	hasNext()
E	next()
void	remove()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining

Constructor Details

FilterIterator

public FilterIterator(Iterator<? extends E> iterator,
 Predicate<? super E> filter)

构造

Parameters:

iterator - 被包装的Iterator

filter - 过滤函数，null表示不过滤

Throws:

NullPointerException - iterator为null时抛出

Method Details

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<E>

next

public E next()

Specified by:

next in interface Iterator<E>

remove

public void remove()

Specified by:

remove in interface Iterator<E>

getIterator

public Iterator<? extends E> getIterator()

获取被包装的Iterator

Returns:

Iterator

getFilter

public Predicate<? super E> getFilter()

获取过滤函数

Returns:

过滤函数，可能为null