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java线程同步之管道通信

程序员文章站 2024-02-02 08:31:28
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之前看书的时候就看过,线程之间通信的两种方式,共享变量和管道通信,一直不知道管道通信是什么,今天终于看到了,话不多数,直接show the code
public class Pipe {
    public static void main(String[] args) throws IOException, InterruptedException {
        PipedWriter out = new PipedWriter();
        PipedReader in = new PipedReader();
        int recive = 0;
        out.connect(in);
        Thread printThread = new Thread(new PrintThread(in),"printThread");
        TimeUnit.SECONDS.sleep(5);
        printThread.start();
        while ((recive = System.in.read()) != -1){
            out.write(recive);
        }
    }
    static class PrintThread implements Runnable{

        private PipedReader in;

        public PrintThread(PipedReader in) {
            this.in = in;
        }

        public void run() {
            try {
                int recive = 0;
                while ( (recive = in.read())  != -1){
                    System.out.print( (char) recive);
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}

//控制台输出:
123
printThread 1
printThread 2
printThread 3

注意一点就是
        out.connect(in);

这一句,其实很好理解,两个管道要连通才可以生效,不然就会出问题
相关标签: java