title: error occured instantiating job to be executed in Quartz sheduler
body: <pre><code>package org.quartz;      
  import org.quartz.Scheduler;     
  import org.quartz.JobDetail;    
  import org.quartz.JobKey;    
  import org.quartz.Trigger;    
  import org.quartz.Job;    
  import org.quartz.JobExecutionContext;    
  import org.quartz.JobExecutionException;    
  import org.quartz.SchedulerException;     
  import org.quartz.impl.StdSchedulerFactory;     
  import static org.quartz.JobBuilder.*;     
  import static org.quartz.TriggerBuilder.*;     
  import static org.quartz.SimpleScheduleBuilder.*;    
  import static org.quartz.CronScheduleBuilder.*;    
  import static org.quartz.CalendarIntervalScheduleBuilder.*;    
  import static org.quartz.DateBuilder.*;    
  
  class myJob implements Job {           
      public void execute(JobExecutionContext context)    
        throws JobExecutionException
      {
        System.out.println("Hello!  HelloJob is executing.");
      }
  }
  
  public class schedule{
      public static void main(String args[]) throws Exception{    
           System.out.println("Java working");
  
           try {
                      // Grab the Scheduler instance from the Factory                 
                  JobKey jobKeyA = new JobKey("myJob", "group1");    
                  JobDetail jobA = JobBuilder.newJob(myJob.class)    
                  .withIdentity(jobKeyA).build();
  
                          // Trigger the job to run now, and then every 40 seconds
                  Trigger trigger1 = TriggerBuilder    
                          .newTrigger()    
                          .withIdentity("dummyTriggerName1", "group1")    
                          .withSchedule(
                              CronScheduleBuilder.cronSchedule("0/5 * * * * ?"))
                          .build();
  
                        Scheduler scheduler = new StdSchedulerFactory().getScheduler();
  
                          // and start it off    
                        scheduler.start();
  
                          // Tell quartz to schedule the job using our trigger
  
                        scheduler.scheduleJob(jobA, trigger1);
  
  
              } catch (SchedulerException se) {                   
                  se.printStackTrace();
              }    
      }       
  }
  </code></pre>
  
  <p>And I am getting an error of instantiating job and then obviously All triggers of Job  set to ERROR state.
  What is the reason? 
  and please help it is very important.
  provide me the answer. 
  <strong>Error</strong></p>
  
  <pre><code>[ERROR] 28 Dec 03:03:30.008 PM
  DefaultQuartzScheduler_QuartzSchedulerThread
  [org.quartz.core.ErrorLogger]
  </code></pre>
  
  <p>An error occured instantiating job to be executed. job= 'group1.myJob'</p>
  
  <pre><code>org.quartz.SchedulerException: Problem instantiating class
  'org.quartz.myJob'  [See nested exception:
  java.lang.IllegalAccessException: Class
  org.quartz.simpl.SimpleJobFactory can not access a member of class
  org.quartz.myJob with modifiers ""]
      at org.quartz.simpl.SimpleJobFactory.newJob(SimpleJobFactory.java:58)
      at org.quartz.simpl.PropertySettingJobFactory.newJob(PropertySettingJobFactory.java:69)
      at org.quartz.core.JobRunShell.initialize(JobRunShell.java:127)
      at org.quartz.core.QuartzSchedulerThread.run(QuartzSchedulerThread.java:375)
  Caused by: java.lang.IllegalAccessException: Class
  org.quartz.simpl.SimpleJobFactory can not access a member of class
  org.quartz.myJob with modifiers ""
      at sun.reflect.Reflection.ensureMemberAccess(Reflection.java:102)
      at java.lang.Class.newInstance(Class.java:436)
      at org.quartz.simpl.SimpleJobFactory.newJob(SimpleJobFactory.java:56)
      ... 3 more [INFO] 28 Dec 03:03:30.013 PM
  DefaultQuartzScheduler_QuartzSchedulerThread
  [org.quartz.simpl.RAMJobStore]
  </code></pre>
  
  <p>All triggers of Job group1.myJob set to ERROR state.</p>