Common practice to stop thread - checking flag or checking interrupt status

Question

Hello all, from the official document from Sun http://java.sun.com/j2se/1.4.2/docs/guide/misc/threadPrimitiveDeprecation.html , I was understand that the common practice to stop a thread is to
   private class StockMonitor extends Thread {
        public StockMonitor() {
            thread = this;
        public void run() {
            final Thread thisThread = Thread.currentThread();
            while(thisThread == thread) {
        public void _stop() {
            thread = null;
        private volatile Thread thread;
    }However, the need to have an extra flag is rather cumbersome. Hence, is it a common practice which we can stop a thread by checking its interrupt status? What is the pros and cons of the two methods?
Thanks
    private class StockMonitor extends Thread {
        public StockMonitor() {
            thread = this;
        public void run() {
            final Thread thisThread = Thread.currentThread();
            while(thisThread.isInterrupted()) {
        public void _stop() {
            interrupt();
    }

Answer 1

However, I thought checking thisThread.isInterrupted() is enough? As the following case...
public void run()
    while(Thred.currentThread().isInterrupted())
        // Do something
        try {
            Thread.sleep(1000);
        catch(InterruptedException exp) {
            // Must break while loop from here. This is because interrupted
            // flag had been reset. If not, we will not able to
            // exit this while loop.
            break;
    }So, is there any need for a boolean type status flag? Can you please provide me any case, where it is impossible to achieve by just using checking thisThread.isInterrupted() checking?
Message was edited by:
KwangHooi