(fp.bugs 3060) System.in.read() blocks other threads

From: ###@###.### (Delong Yu)



System.in.read() blocks other threads. If it is suspended in jdb, the other
threads are running fine, but once it is resumed, all the other threads stop.

Here is an example (modified Clock.java):

ance and flashes a lot. (YUCK).
mport java.awt.Graphics;
import java.util.Date;
import java.io.IOException;

public class Clock extends java.applet.Applet implements Runnable {

    Thread clockThread;
        AnotherThread anotherThread;
        OneMoreThread oneMoreThread;

    public void start() {
        if (clockThread == null) {
            clockThread = new Thread(this, "Clock");
            clockThread.start();
        }
        if (oneMoreThread == null) {
            oneMoreThread = new OneMoreThread();
            oneMoreThread.start();
        }
        if (anotherThread == null) {
            anotherThread = new AnotherThread();
            anotherThread.start();
        }
    }
    public void run() {
        while (clockThread != null) {
            repaint();
            try {
                clockThread.sleep(1000);
            } catch (InterruptedException e){
            }
        }
    }
    public void paint(Graphics g) {
        Date now = new Date();
        g.drawString(now.getHours() + ":" + now.getMinutes() + ":" + now.getSeconds()
, 5, 10);
    }
    public void stop() {
        clockThread.stop();
        clockThread = null;
    }
}

class AnotherThread extends Thread {


        public AnotherThread () {
        }

        public void run () {

                try {
                        while(true) {
                                System.in.read();
                                System.out.println("read a byte");
                        }
                } catch(IOException e) {
                }

        }
}

class OneMoreThread extends Thread {


        public OneMoreThread () {
        }

        public void run () {

                try {
                        while(true) {
                                System.out.println("before sleep");
                                this.sleep(1000);
                        }
                }
                catch(InterruptedException e) {
                        System.err.println("InterruptedException " +e );
                }

        }
}