package  ua.com.silverpoint.salers.actions.email;
 public   class  testCron  extends  HttpServlet{
     private   static  Crontab crontab= null ;

     private  CrontabParser cp =  new  CrontabParser();
     private  CrontabEntryBean[] ceb =  new  CrontabEntryBean[ 1 ];


     public   void   init(){
         try {
            ProjectProperties conf = ProjectPropertiesManager.getProjectProperties("jcrontab");
            Jcrontab j =  new  Jcrontab();
            crontab= Crontab.getInstance();
            crontab.init(conf);

            ceb[ 0 ] = cp.marshall("* * * * * ua.com.silverpoint.salers.actions.email.HelloWorld");
            ceb[ 0 ].setYears("*");
            ceb[ 0 ].setSeconds("*");
            ceb[ 0 ].setBusinessDays(true);
            ceb[ 0 ].setId( 0 );
        }
         catch (Exception e){
            System.out.println(e.toString());
        }
    }

     public   void  doGet(HttpServletRequest request, HttpServletResponse response)  throws  IOException, ServletException {
        response.setContentType("text/html");
        PrintWriter out = response.getWriter();
   }
}

 package  ua.com.silverpoint.salers.actions.email;
 public   class  HelloWorld {
      public   static   void  main(String [] args)  throws  Exception {
         System.out.println("HelloWorld");
     }
}

<servlet>
  	<servlet-name>Cron</servlet-name>
  	<servlet- class >ua.com.silverpoint.salers.actions.email.testCron</servlet- class >
    <load-on-startup> 1 </load-on-startup>
  </servlet>

  <servlet-mapping>
  	<servlet-name>Cron</servlet-name>
  	<url-pattern>/Cron</url-pattern>
  </servlet-mapping>

 public   class  SimpleTest  extends  TestCase {
   private  CrontabParser cp =  new  CrontabParser();
   static   private  Crontab crontab =  null ;
   private  CrontabEntryBean[] ceb =  new  CrontabEntryBean[ 3 ];

   public  SimpleTest(String name) {
     super (name);
  }

   protected   void  setUp()  throws  Exception {
    crontab = Crontab.getInstance();
    crontab.getInstance().init();
        
    ceb[ 0 ] = cp.marshall("* * * * * org.jcrontab.tests.test testing");
    ceb[ 0 ].setYears("*");
    ceb[ 0 ].setSeconds("0");
    ceb[ 0 ].setBusinessDays(true);
    ceb[ 0 ].setId( 0 );

    // skipped
  }

  // skipped

   public   void  testCrontabParser()  throws  Exception {
    CrontabParser cp =  new  CrontabParser();
    CrontabEntryBean ceb = cp.marshall("* * * * * org.jcrontab.tests.TaskTest");
    System.out.println("this is the bean resulting from " +
                           " * * * * * org.jcrontab.tests.TaskTest \n" + 
    ceb.toXML());
  }
}