Java管道流

管道流的主要作用可以用于两个线程之间的通信，有管道输出流 PipeOutputStream和管道输入流 PipeInputStream。然后通过connect将两个管道连接起来。

import java.io.PipedInputStream;
import java.io.PipedOutputStream;

class Send implements Runnable{
	private PipedOutputStream pos = null;

	public Send() {
		// TODO Auto-generated constructor stub
		pos = new PipedOutputStream();
	}

	@Override
	public void run() {
		// TODO Auto-generated method stub
		String str = "Hello world!";
		try {
			pos.write(str.getBytes());
		} catch (Exception e) {
			// TODO: handle exception
			e.printStackTrace();
		}

		try {
			pos.close();
		} catch (Exception e) {
			// TODO: handle exception
			e.printStackTrace();
		}
	}

	public PipedOutputStream getPos() {
		return pos;
	}
}

class Receive implements Runnable{
	private PipedInputStream pis = null;

	public Receive() {
		// TODO Auto-generated constructor stub
		pis = new PipedInputStream();
	}

	public PipedInputStream getPis() {
		return pis;
	}

	@Override
	public void run() {
		// TODO Auto-generated method stub
		byte[] b = new byte[1024];
		int len = 0;
		try {
			len = pis.read(b);
		} catch (Exception e) {
			// TODO: handle exception
			e.printStackTrace();
		}

		try {
			pis.close();
		} catch (Exception e) {
			// TODO: handle exception
			e.printStackTrace();
		}

		System.out.println(new String(b, 0, len));
	}	

}

public class PipeDemo01 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Send s = new Send();
		Receive r = new Receive();
		try {
			s.getPos().connect(r.getPis());
		} catch (Exception e) {
			// TODO: handle exception
			e.printStackTrace();
		}

		new Thread(s).start();
		new Thread(r).start();
	}

}