/[projects]/miscJava/Test3/src/dk/thoerup/schedulesamples/JavaTimer.java
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revision 780 by torben, Tue Jun 1 05:51:53 2010 UTC revision 781 by torben, Tue Jun 1 12:41:41 2010 UTC
# Line 6  Line 6 
6  package dk.thoerup.schedulesamples;  package dk.thoerup.schedulesamples;
7    
8  import java.io.IOException;  import java.io.IOException;
9    import java.util.Calendar;
10    import java.util.Timer;
11    import java.util.TimerTask;
12    
13  import javax.servlet.ServletException;  import javax.servlet.ServletException;
14  import javax.servlet.http.HttpServlet;  import javax.servlet.http.HttpServlet;
15  import javax.servlet.http.HttpServletRequest;  import javax.servlet.http.HttpServletRequest;
# Line 16  import javax.servlet.http.HttpServletRes Line 20  import javax.servlet.http.HttpServletRes
20   */   */
21  public class JavaTimer extends HttpServlet {  public class JavaTimer extends HttpServlet {
22          private static final long serialVersionUID = 1L;          private static final long serialVersionUID = 1L;
23              
24            class MyTask extends TimerTask {
25                    String str;
26                    int count = 0;
27                    
28                    public MyTask(String s) {
29                            str = s;
30                    }
31                    
32                    @Override
33                    public void run() {
34                            System.out.println("MyTask : " + str);
35                            
36                            count++;
37                            if (count >=10)
38                                    this.cancel(); //cancel efter 10 runs                  
39                    }
40            
41                    
42            }
43            
44            Timer timer = new Timer();
45    
46            @Override
47          protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {          protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
48                    //schedule a single run,, run after 3 seconds
49                    //timer.schedule(new MyTask("1"), 3000);
50                    
51                    
52                    //continuous execution first execution after 2 seconds and then with 1 second intervals
53                    //timer.schedule(new MyTask("2"), 2000, 1000);
54                    
55                    //schedule a single run at a specific time
56                    Calendar cal = Calendar.getInstance();
57                    cal.set(2010, 5, 1, 14, 40, 0); //months are zero indexed              
58                    timer.schedule(new MyTask("3"), cal.getTime() );                
59                    
60            
61                    response.getWriter().print("ok");
62          }          }
63    
64  }  }
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