多线程通信学习

鉴于上次惨痛的教训，我决定重新认识下java。昨天没事儿的时候把《疯狂java讲义》（李刚著）中关于线程通信的部分例子敲了一遍。coding~
代码：

package thread.pipe;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.PipedReader;

public class ReaderThread extends Thread {
	private PipedReader pr;
	private BufferedReader br;

	public ReaderThread() {
	}

	public ReaderThread(PipedReader pr) {
		this.pr = pr;
		this.br = new BufferedReader(pr);
	}

	public void run() {
		String buf = null;
		try {
			while ((buf = br.readLine()) != null) {
				System.out.println(buf);
			}
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			try {
				if (br != null)
					br.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}
}

package thread.pipe;

import java.io.IOException;
import java.io.PipedWriter;

public class WriterThread extends Thread {
	String[] books = new String[] { "php", "java", "C++", "ajax" };
	private PipedWriter pw;

	public WriterThread() {
	}

	public WriterThread(PipedWriter pw) {
		this.pw = pw;
	}

	public void run() {
		try {
			for (int i = 0; i < 100; i++) {
				pw.write(books[i % 4]+":"+i+ "\n");
			}
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			try {
				if (pw != null)
					pw.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}

}

package thread.pipe;

import java.io.PipedReader;
import java.io.PipedWriter;

public class Test {
	public static void main(String[] args) {
		PipedWriter pw = null;
		PipedReader pr = null;
		try {
			pw=new PipedWriter();
			pr=new PipedReader();
			pr.connect(pw);
			new WriterThread(pw).start();
			new ReaderThread(pr).start();
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
		}
	}
}

PipedWriter、PipedReader做connect链接完成线程之间通信。