java线程通信

import java.io.*;
public class PipedStream {
    public static void main(String[] args) {
        PipedInputStream pis = new PipedInputStream();
        PipedOutputStream pos = new PipedOutputStream();
        try{
            pos.connect(pis);
        }
        catch(Exception e) {
            e.printStackTrace();
        }
        Producer p = new Producer(pos);
        Consumer c = new Consumer(pis);
        Thread t1 = new Thread(p);
        t1.run();
        c.run();
    }
}

class Producer implements Runnable {
    PipedOutputStream pos;
    Producer(PipedOutputStream pos) {
        this.pos = pos;
    }

    public void run() {
        try{
            pos.write("welcome you!".getBytes());
        }catch(Exception e) {
            e.printStackTrace();
        }
    }
}
class Consumer extends Thread {
    PipedInputStream pis;
    Consumer(PipedInputStream pis) {
        this.pis = pis;
    }
    public void run() {
        byte[] buf = new byte[100];
        try{
            int length = pis.read(buf);
            System.out.println(new String(buf, 0, length));
        }
        catch(Exception e) {
            e.printStackTrace();
        }
    }
}