io流管道流

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();
	}
}
class Read implements Runnable{
	private PipedInputStream in;
	Read(PipedInputStream in){
		this.in=in;
	}
	
	public void run() {
		try {
			System.out.println("读取前。。。没有数据阻塞");
			byte [] by = new byte[1024];
			System.out.println("读到数据。。。阻塞结束");
			int len = in.read(by);
			String s = new String(by,0,len);
			System.out.println(s);
		}
		catch(IOException e) {
			throw new RuntimeException("管道读取失败");
		}
	}	
}
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，等待六秒后");
				Thread.sleep(6000);
				out.write("Piped lai  la ".getBytes());
				out.close();
			}
			catch(Exception e) {
				throw new RuntimeException("管道输出流失败");
			}
		
		}
}