JAVA——管道流

import java.io.*;
class Read implements Runnable{
private PipedInputStream in;
Read(PipedInputStream in)
{
this.in = in;
}
public void run()
{
try
{
byte[] buf = new byte[1024];
System.out.println("读取前。。。没有数据阻塞");
int len = in.read(buf);
System.out.println("读到数据。。。阻塞停止");
String s = new String(buf,0,len);
System.out.println(s);
in.close();
}
catch(IOException e)
{
throw new RuntimeException("管道读取流失败！");
}
}
}

class Write implements Runnable
{
private PipedOutputStream out;
Write(PipedOutputStream out)
{
this.out = out;
}
public void run()
{
try
{
System.out.println("开始写入数据，等待6秒后。。。");
Thread.sleep(6000);
out.write("piped lai le".getBytes());
out.close();
}
catch(Exception e)
{
throw new RuntimeException("管道输出流失败！");
}
}
}

class PipedStreamDemo
{
public static void main(String[] args)throws IOException
{
PipedInputStream in = new PipedInputStream();
PipedOutputStream out = new PipedOutputStream();
in.connect(out);

Read r = new Read(in);
Write w = new Write(out);
new Thread(r).start();
new Thread(w).start();
}

}