Package org.aoju.bus.core.collection

Class CopiedIterator<E>

java.lang.Object

org.aoju.bus.core.collection.CopiedIterator<E>

Type Parameters:

E - 元素类型

All Implemented Interfaces:

Serializable, Iterable<E>, Iterator<E>, IterableIterator<E>

public class CopiedIterator<E>
extends Object
implements IterableIterator<E>, Serializable

复制 Iterator为了解决并发情况下Iterator遍历导致的问题,当Iterator 被修改会抛出ConcurrentModificationException),故使用复制原Iterator的方式解决此问题

解决方法为：在构造方法中遍历Iterator中的元素,装入新的List中然后遍历之 当然,修改这个复制后的Iterator是没有意义的,因此remove方法将会抛出异常

Since:

Java 17+

Author:

Kimi Liu

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
CopiedIterator(Iterator<E> iterator)	构造

Method Summary

Modifier and Type	Method	Description
static <E> CopiedIterator<E>	copyOf(Iterator<E> iterator)	根据已有Iterator，返回新的CopiedIter
boolean	hasNext()
E	next()
void	remove()	此对象不支持移除元素

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Methods inherited from interface org.aoju.bus.core.collection.IterableIterator

iterator

Methods inherited from interface java.util.Iterator

forEachRemaining

Constructor Details

CopiedIterator

public CopiedIterator(Iterator<E> iterator)

构造

Parameters:

iterator - 被复制的Iterator

Method Details

copyOf

public static <E> CopiedIterator<E> copyOf(Iterator<E> iterator)

根据已有Iterator，返回新的CopiedIter

Type Parameters:

E - 元素类型

Parameters:

iterator - Iterator

Returns:

CopiedIter

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()
            throws UnsupportedOperationException

此对象不支持移除元素

Specified by:

remove in interface Iterator<E>

Throws:

UnsupportedOperationException - 当调用此方法时始终抛出此异常