java中PipedOutputStream和PipedInputStream类用法

大概就是这么个意思：两个线程需要通信，就是传写数据啊什么的给另外一个线程，PipleOutputString负责输出数据，  outStream.write(info.getBytes());(貌似必须是byte的,这才符合计算机内存的最原始的规则)，PipleInputStrieam负责输入，两者都是在程序中进行的，这一点与FileInputStream不同，它读取传递进入管道的数据，  int len = inStream.read(buf);，PipleOutPutStream写的对象是想要传递的数据，需要先将其转换成byte类型的格式，接收处需要byte类型的but接受数据

import java.io.*;

 public class PipedStreamTest {     public static void main(String [] args) {         Sender sender = new Sender();         Receiver receiver = new Receiver();                  PipedOutputStream outStream = sender.getOutStream();         PipedInputStream inStream = receiver.getInStream();                  try {             //inStream.connect(outStream); // 与下一句一样             outStream.connect(inStream);         } catch (Exception e) {             e.printStackTrace();         }                  sender.start();         receiver.start();     } } class Sender extends Thread {     private PipedOutputStream outStream = new PipedOutputStream();          public PipedOutputStream getOutStream() {         return outStream;     }          public void run() {         String info = "hello, receiver";                  try {             outStream.write(info.getBytes());                          outStream.close();         } catch (Exception e) {             e.printStackTrace();         }     } } class Receiver extends Thread {     private PipedInputStream inStream = new PipedInputStream();          public PipedInputStream getInStream() {         return inStream;     }          public void run() {         byte[] buf = new byte[1024];                  try {             int len = inStream.read(buf);                          System.out.println("receive message from sender : " + new String(buf, 0, len));                          inStream.close();         } catch (Exception e) {             e.printStackTrace();         }     }     }