org.aoju.bus.core.collection

Class LineIterator

java.lang.Object

org.aoju.bus.core.collection.ComputeIterator<String>

org.aoju.bus.core.collection.LineIterator

All Implemented Interfaces:

Closeable, Serializable, AutoCloseable, Iterable<String>, Iterator<String>, IterableIterator<String>

public class LineIterator
extends ComputeIterator<String>
implements IterableIterator<String>, Closeable, Serializable

将Reader包装为一个按照行读取的Iterator 此对象遍历结束后,应关闭之,推荐使用方式:

Since:

JDK 1.8+

Version:

6.3.0

Author:

Kimi Liu

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
LineIterator(InputStream in, Charset charset) 构造
LineIterator(Reader reader) 构造

Method Summary

Modifier and Type	Method and Description
void	close() 关闭Reader
protected String	computeNext() 计算新的节点，通过实现此方法，当调用ComputeIterator.hasNext()时将此方法产生的节点缓存，直到调用ComputeIterator.next()取出 当无下一个节点时，须返回null表示遍历结束
protected boolean	isValidLine(String line) 重写此方法来判断是否每一行都被返回，默认全部为true

Methods inherited from class org.aoju.bus.core.collection.ComputeIterator

finish, hasNext, next

Methods inherited from class java.lang.Object

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

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

iterator

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Methods inherited from interface java.util.Iterator

forEachRemaining, hasNext, next, remove

Constructor Detail

LineIterator

public LineIterator(InputStream in,
                    Charset charset)
             throws IllegalArgumentException

构造

Parameters:

in - InputStream

charset - 编码

Throws:

IllegalArgumentException - reader为null抛出此异常

LineIterator

public LineIterator(Reader reader)
             throws IllegalArgumentException

构造

Parameters:

reader - Reader对象，不能为null

Throws:

IllegalArgumentException - reader为null抛出此异常

Method Detail

computeNext

protected String computeNext()

Description copied from class: ComputeIterator

计算新的节点，通过实现此方法，当调用ComputeIterator.hasNext()时将此方法产生的节点缓存，直到调用ComputeIterator.next()取出 当无下一个节点时，须返回null表示遍历结束

Specified by:

computeNext in class ComputeIterator<String>

Returns:

节点值

close

public void close()

关闭Reader

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

isValidLine

protected boolean isValidLine(String line)

重写此方法来判断是否每一行都被返回，默认全部为true

Parameters:

line - 需要验证的行

Returns:

是否通过验证