管道流学习及示例

管道流学习及示例

需要两个线程分别完成读与写，记住：一般情况下 先写入 才能读出来哦！

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

public class PipedStreamStudy {

	/**
	 * @param args
	 */
	public static void main(String[] args) throws Exception{
		
		PipedInputStream pInputStream = new PipedInputStream();
		PipedOutputStream pOutputStream = new PipedOutputStream();
		pInputStream.connect(pOutputStream);
		Thread thread1 = new Thread(new InputPipe(pInputStream));
		Thread thread2 = new Thread(new OutputPipe(pOutputStream));
		thread1.start();
		thread2.start();
	}
}

class InputPipe implements Runnable{
	private PipedInputStream pInputStream = null;
	public InputPipe(PipedInputStream pInputStream){
		this.pInputStream = pInputStream;
	}
	
	@Override
	public void run() {
		// TODO Auto-generated method stub
		
		try {
			byte[] b = new byte[1024];
			int len = pInputStream.read(b);
			String string = new String(b, 0, len);
			System.out.println("string = " + string);
			
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} finally {
			try {
				pInputStream.close();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		
	}
}

class OutputPipe implements Runnable{
	private PipedOutputStream pOutputStream = null;
	public OutputPipe(PipedOutputStream pOutputStream){
		this.pOutputStream = pOutputStream;
	}
	@Override
	public void run() {
		// TODO Auto-generated method stub
		byte[] b = new byte[100];
		try {
			pOutputStream.write("abcdefg".getBytes());
			
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} finally {
			try {
				pOutputStream.close();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
	}
}