Java之多线程（1）

InterruptCheck.java
public class InterruptCheck extends Object {
        public static void main(String[] args) {
                Thread t = Thread.currentThread();
                System.out.println("Point A: t.isInterrupted()=" + t.isInterrupted());
                t.interrupt();
                System.out.println("Point B: t.isInterrupted()=" + t.isInterrupted());
                System.out.println("Point C: t.isInterrupted()=" + t.isInterrupted());

                try {
                        Thread.sleep(2000);
                        System.out.println("was NOT interrupted");
                } catch ( InterruptedException x ) {
                        System.out.println("was interrupted");
                }
                //在这里因为sleep抛出了异常，所以它清除了中断标志

                System.out.println("Point D: t.isInterrupted()=" + t.isInterrupted());
        }
}

class ThreadTest implements Runnable
{
    private int tickets = 100 ;
    public void run()
    {
        while(true)
        {
            //假如一个线程未执行完，而另一线程又运行此代码，则会出现不同步问题
            //为说明问题，将线程延迟
            if(tickets>0)
            {

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