/*
管道流:
PipedInputStream
void connect(PipedOutputStream src)
使此管道输入流连接到管道输出流 src
PipedOutputStream
void connect(PipedInputStream snk)
在JDK我们看到PipedInputStream中有管道缓冲区,用来接收数据
管道流内部在实现时还有大量的对同步数据的处理
管道输出流和管道输入流执行时不能互相阻塞,所以一般要开启独立线程分别执行
顺便复习了多线程操作
[示例]:管道流
*/
import java.io.*;
class Demo
{
public static void main(String[] args) throws Exception
{
PipedInputStream pin = new PipedInputStream();
PipedOutputStream pout = new PipedOutputStream();
pin.connect(pout); //输入流与输出流连接
ReadThread readTh = new ReadThread(pin);
WriteThread writeTh = new WriteThread(pout);
new Thread(readTh).start();
new Thread(writeTh).start();
}
public static void sop(Object obj) //打印
{
System.out.println(obj);
}
}
class ReadThread implements Runnable
{
private PipedInputStream pin;
ReadThread(PipedInputStream pin) //
{
this.pin=pin;
}
public void run() //由于必须要覆盖run方法,所以这里不能抛,只能try
{
try
{
sop("R:读取前没有数据,阻塞中...等待数据传过来再输出到控制台...");
byte[] buf = new byte[1024];
int len = pin.read(buf); //read阻塞
sop("R:读取数据成功,阻塞解除...");
String s= new String(buf,0,len);
sop(s); //将读取的数据流用字符串以字符串打印出来
pin.close();
}
catch(Exception e)
{
throw new RuntimeException("R:管道读取流失败!");
}
}
public static void sop(Object obj) //打印
{
System.out.println(obj);
}
}
class WriteThread implements Runnable
{
private PipedOutputStream pout;
WriteThread(PipedOutputStream pout)
{
this.pout= pout;
}
public void run()
{
try
{
sop("W:开始将数据写入:但等个5秒让我们观察...");
Thread.sleep(5000); //释放cpu执行权5秒
pout.write("W: writePiped 数据...".getBytes()); //管道输出流
pout.close();
}
catch(Exception e)
{
throw new RuntimeException("W:WriteThread写入失败...");
}
}
public static void sop(Object obj) //打印
{
System.out.println(obj);
}
}
参考文章：
http://xouou.iteye.com/blog/1333475
管道流总结：
http://www.360doc.com/content/14/0317/10/9297708_361219121.shtml
本文出自 “点滴积累” 博客，请务必保留此出处http://tianxingzhe.blog.51cto.com/3390077/1693388
