黑马程序员——管道流

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package com.io.file;

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

public class PipedInput_Output_Stream {
	public static void main(String[] args) {
		PipedInputStream pis=new PipedInputStream();
		PipedOutputStream pos=new PipedOutputStream();
		try {
			pis.connect(pos);//使输入流与输出流连接上
		} catch (IOException e) {
			e.printStackTrace();
		}
		//下面是调用两个线程
		Read r=new Read(pis);
		Write w=new Write(pos);
		Thread t1=new Thread(r);
		Thread t2=new Thread(w);
		t1.start();
		t2.start();
	}
}
class Read implements Runnable{
	private PipedInputStream pis;
	public Read(PipedInputStream pis){
		this.pis=pis;
	}
	public void run(){
		int num=0;
		byte[]b=new byte[1024];
		try {
			num=pis.read(b);//走到这里是，如果没有数据，则会产生线程阻塞，让给其他线程执行
			System.out.println(new String(b,0,num));
			pis.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}
class Write implements Runnable{
	private PipedOutputStream pos;
	public Write(PipedOutputStream pos){
		this.pos=pos;
	}
	public void run(){
		try {
			pos.write("aafdafdsa".getBytes());
			pos.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}

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