teststop.java

java2 primer plus一书源程序

/*
 * TestStop.java
 *
 * Created on September 25, 2002, 12:08 PM
 */

package ch18;

/**
 *
 * @author  Stephen Potts
 */
public class TestStop extends Thread
{
    private volatile boolean stopping;
    private Thread secondThread;
    
    /** Creates a new instance of TestStop */
    public TestStop()
    {
    }
    
    public void run()
    {
        secondThread = Thread.currentThread();
        stopping = false;
        
        int counter = 0;
        
        while( !stopping)
        {
            System.out.println("counter = " + counter);
            counter++;
            
            try
            {
                Thread.sleep(1000);
            }catch (InterruptedException ie)
            {
                System.out.println("Sleep interrupted in run()");
            }
            
        }
    }
    
    public void stopIt()
    {
        this.stopping = true;
    }
    
    public static void main(String[] args)
    {
        TestStop ts = new TestStop();
        Thread t = new Thread(ts);
        t.start();
        
        //Delay for a few seconds to let the other thread get going
        try
        {
            Thread.sleep(2500);
        }catch (InterruptedException ie)
        {
            System.out.println("Sleep interrupted in main()");
        }
        
        System.out.println("About to stop the other thread");
        ts.stopIt();
        System.out.println("Exiting from Main");
        
    }
}