Quartz Scheduler

https://www.quartz-scheduler.org/documentation/quartz-2.5.x/
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### QuartzTest.java - Obtain, start, and shutdown scheduler

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/quick-start.html

This example shows the basic lifecycle of a Quartz scheduler: get the default scheduler, start it, and shut it down. Note that the application will not terminate until shutdown() is called because active threads exist.

```java
   
  import org.quartz.Scheduler;
  import org.quartz.SchedulerException;
  import org.quartz.impl.StdSchedulerFactory;
  import static org.quartz.JobBuilder.*;
  import static org.quartz.TriggerBuilder.*;
  import static org.quartz.SimpleScheduleBuilder.*;

  public class QuartzTest {

      public static void main(String[] args) {

          try {
              // Grab the Scheduler instance from the Factory
              Scheduler scheduler = StdSchedulerFactory.getDefaultScheduler();

              // and start it off
              scheduler.start();

              scheduler.shutdown();

          } catch (SchedulerException se) {
              se.printStackTrace();
          }
      }
  }
```

--------------------------------

### Instantiate and start scheduler, schedule job with trigger

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/tutorials/tutorial-lesson-01.html

Creates a StdSchedulerFactory, gets a Scheduler, starts it, defines a JobDetail for HelloJob, creates a Trigger that fires now and every 40 seconds, and schedules the job. Note that the scheduler must be started before triggers fire.

```java
  SchedulerFactory schedFact = new org.quartz.impl.StdSchedulerFactory();

  Scheduler sched = schedFact.getScheduler();

  sched.start();

  // define the job and tie it to our HelloJob class
  JobDetail job = newJob(HelloJob.class)
      .withIdentity("myJob", "group1")
      .build();

  // Trigger the job to run now, and then every 40 seconds
  Trigger trigger = newTrigger()
      .withIdentity("myTrigger", "group1")
      .startNow()
      .withSchedule(simpleSchedule()
          .withIntervalInSeconds(40)
          .repeatForever())
      .build();

  // Tell quartz to schedule the job using our trigger
  sched.scheduleJob(job, trigger);
```

--------------------------------

### Sample log output from Quartz scheduler startup and shutdown

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/quick-start.html

This is the console output when logging is not configured, showing the scheduler creation, initialization, start, and shutdown messages.

```text
[INFO] 21 Jan 08:46:27.857 AM main [org.quartz.core.QuartzScheduler]
Quartz Scheduler v.2.0.0-SNAPSHOT created.

[INFO] 21 Jan 08:46:27.859 AM main [org.quartz.simpl.RAMJobStore]
RAMJobStore initialized.

[INFO] 21 Jan 08:46:27.865 AM main [org.quartz.core.QuartzScheduler]
Scheduler meta-data: Quartz Scheduler (v2.0.0) 'Scheduler' with instanceId 'NON_CLUSTERED'
  Scheduler class: 'org.quartz.core.QuartzScheduler' - running locally.
  NOT STARTED.
  Currently in standby mode.
  Number of jobs executed: 0
  Using thread pool 'org.quartz.simpl.SimpleThreadPool' - with 50 threads.
  Using job-store 'org.quartz.simpl.RAMJobStore' - which does not support persistence. and is not clustered.


[INFO] 21 Jan 08:46:27.865 AM main [org.quartz.impl.StdSchedulerFactory]
Quartz scheduler 'Scheduler' initialized from default resource file in Quartz package: 'quartz.properties'

[INFO] 21 Jan 08:46:27.866 AM main [org.quartz.impl.StdSchedulerFactory]
Quartz scheduler version: 2.0.0

[INFO] 21 Jan 08:46:27.866 AM main [org.quartz.core.QuartzScheduler]
Scheduler Scheduler_$_NON_CLUSTERED started.

[INFO] 21 Jan 08:46:27.866 AM main [org.quartz.core.QuartzScheduler]
Scheduler Scheduler_$_NON_CLUSTERED shutting down.

[INFO] 21 Jan 08:46:27.866 AM main [org.quartz.core.QuartzScheduler]
Scheduler Scheduler_$_NON_CLUSTERED paused.

[INFO] 21 Jan 08:46:27.867 AM main [org.quartz.core.QuartzScheduler]
Scheduler Scheduler_$_NON_CLUSTERED shutdown complete.
```

--------------------------------

### Start the scheduler

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/examples/Example1.html

Starts the scheduler so it can begin firing triggers.

```java
sched.start();
```

--------------------------------

### HelloJob implementation

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/tutorials/tutorial-lesson-03.html

Example job class implementing the Job interface. It must have a no-argument constructor and its execute method is called by the scheduler.

```java
  public class HelloJob implements Job {

    public HelloJob() {
    }

    public void execute(JobExecutionContext context)
      throws JobExecutionException
    {
      System.err.println("Hello!  HelloJob is executing.");
    }
  }
```

--------------------------------

### Example of a Quartz-defined DataSource with HikariCP

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/configuration/ConfigDataSources.html

Shows the properties for a Quartz-created DataSource using HikariCP. Note that the provider property must be set to 'hikaricp' to select HikariCP over c3p0. The example uses an Oracle JDBC driver and includes a connection test query.

```properties
org.quartz.dataSource.myDS.driver = hikaricp
org.quartz.dataSource.myDS.driver = oracle.jdbc.driver.OracleDriver
org.quartz.dataSource.myDS.URL = jdbc:oracle:thin:@10.0.1.23:1521:demodb
org.quartz.dataSource.myDS.user = myUser
org.quartz.dataSource.myDS.password = myPassword
org.quartz.dataSource.myDS.maximumPoolSize = 30
org.quartz.dataSource.myDS.connectionTestQuery = SELECT 1
org.quartz.dataSource.myDS.idleTimeout = 0
```

--------------------------------

### Example of Using a Custom ConnectionProvider Implementation

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/configuration/ConfigDataSources.html

Shows how to configure a custom ConnectionProvider class. After instantiating the class, Quartz can automatically set configuration properties on the instance, bean-style.

```properties
org.quartz.dataSource.myCustomDS.connectionProvider.class = com.foo.FooConnectionProvider
org.quartz.dataSource.myCustomDS.someStringProperty = someValue
org.quartz.dataSource.myCustomDS.someIntProperty = 5
```

--------------------------------

### Example of a Quartz-defined DataSource (with c3p0 default provider)

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/configuration/ConfigDataSources.html

Shows a complete quartz.properties configuration for a DataSource named 'myDS' using the c3p0 provider, including driver, URL, user, password, and maxConnections.

```properties
org.quartz.dataSource.myDS.driver = oracle.jdbc.driver.OracleDriver
org.quartz.dataSource.myDS.URL = jdbc:oracle:thin:@10.0.1.23:1521:demodb
org.quartz.dataSource.myDS.user = myUser
org.quartz.dataSource.myDS.password = myPassword
org.quartz.dataSource.myDS.maxConnections = 30
```

--------------------------------

### Instantiating the Default Scheduler

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/cookbook/CreateScheduler.html

Creates a Scheduler using the default configuration from 'quartz.properties' in the working directory, classpath, or the fall-back default in quartz.jar. The scheduler will not execute jobs until start() is called.

```java
// the 'default' scheduler is defined in "quartz.properties" found
// in the current working directory, in the classpath, or
// resorts to a fall-back default that is in the quartz.jar

SchedulerFactory sf = new StdSchedulerFactory();
Scheduler scheduler = sf.getScheduler();

// Scheduler will not execute jobs until it has been started (though they can be scheduled before start())
scheduler.start();
```

--------------------------------

### CronTrigger Example 1 - fires every 5 minutes

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/tutorials/tutorial-lesson-06.html

Cron expression that fires every 5 minutes.

```cron
0 0/5 * * * ?
```

--------------------------------

### Calendar Example with HolidayCalendar and addCalendar

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/tutorials/tutorial-lesson-04.html

Shows how to instantiate HolidayCalendar, add excluded dates, register it with the scheduler via addCalendar, and create two triggers that use the calendar via modifiedByCalendar to skip holidays.

```java
HolidayCalendar cal = new HolidayCalendar();
cal.addExcludedDate( someDate );
cal.addExcludedDate( someOtherDate );

sched.addCalendar("myHolidays", cal, false);


Trigger t = newTrigger()
    .withIdentity("myTrigger")
    .forJob("myJob")
    .withSchedule(dailyAtHourAndMinute(9, 30)) // execute job daily at 9:30
    .modifiedByCalendar("myHolidays") // but not on holidays
    .build();

// .. schedule job with trigger

Trigger t2 = newTrigger()
    .withIdentity("myTrigger2")
    .forJob("myJob2")
    .withSchedule(dailyAtHourAndMinute(11, 30)) // execute job daily at 11:30
    .modifiedByCalendar("myHolidays") // but not on holidays
    .build();

// .. schedule job with trigger2
```

--------------------------------

### Example of a Datasource referenced from an Application Server

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/configuration/ConfigDataSources.html

Shows the properties for referencing a DataSource managed by an application server via JNDI. The jndiURL property is required, and the other properties are optional for connecting to the JNDI context.

```properties
org.quartz.dataSource.myOtherDS.jndiURL=jdbc/myDataSource
org.quartz.dataSource.myOtherDS.java.naming.factory.initial=com.evermind.server.rmi.RMIInitialContextFactory
org.quartz.dataSource.myOtherDS.java.naming.provider.url=ormi://localhost
org.quartz.dataSource.myOtherDS.java.naming.security.principal=admin
org.quartz.dataSource.myOtherDS.java.naming.security.credentials=123
```

--------------------------------

### Building a SimpleTrigger with Misfire Handling Instruction

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/tutorials/tutorial-lesson-05.html

Shows how to build a SimpleTrigger with a misfire instruction using SimpleScheduleBuilder. The example sets a 5-minute interval, repeats forever, and uses withMisfireHandlingInstructionNextWithExistingCount().

```java
  trigger = newTrigger()
    .withIdentity("trigger7", "group1")
    .withSchedule(simpleSchedule()
        .withIntervalInMinutes(5)
        .repeatForever()
        .withMisfireHandlingInstructionNextWithExistingCount())
    .build();
```

--------------------------------

### Instantiating a Specific Scheduler From a Specific Property File

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/cookbook/CreateScheduler.html

Initializes a StdSchedulerFactory with a properties file name (fileName) before obtaining the Scheduler. The scheduler will not execute jobs until start() is called.

```java
StdSchedulerFactory sf = new StdSchedulerFactory();

sf.initialize(fileName);

Scheduler scheduler = sf.getScheduler();

// Scheduler will not execute jobs until it has been started (though they can be scheduled before start())
scheduler.start();
```

--------------------------------

### Accessing JobDataMap from JobExecutionContext

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/tutorials/tutorial-lesson-03.html

This example shows how to retrieve data from the merged JobDataMap during job execution. It demonstrates getting a string, a float, and an ArrayList from the map, and then modifying the ArrayList.

```java
public class DumbJob implements Job {

    public DumbJob() {
    }

    public void execute(JobExecutionContext context)
      throws JobExecutionException
    {
      JobKey key = context.getJobDetail().getKey();

      JobDataMap dataMap = context.getMergedJobDataMap();  // Note the difference from the previous example

      String jobSays = dataMap.getString("jobSays");
      float myFloatValue = dataMap.getFloat("myFloatValue");
      ArrayList state = (ArrayList)dataMap.get("myStateData");
      state.add(new Date());

      System.err.println("Instance " + key + " of DumbJob says: " + jobSays + ", and val is: " + myFloatValue);
    }
  }
```

--------------------------------

### Define job and trigger, and schedule job

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/quick-start.html

This example shows how to define a job tied to a class, create a trigger that runs now and repeats every 40 seconds, and schedule the job with the trigger. You need to allow time for the job to execute before calling shutdown(), e.g., Thread.sleep(60000).

```java
   
  // define the job and tie it to our HelloJob class
  JobDetail job = newJob(HelloJob.class)
      .withIdentity("job1", "group1")
      .build();

  // Trigger the job to run now, and then repeat every 40 seconds
  Trigger trigger = newTrigger()
      .withIdentity("trigger1", "group1")
      .startNow()
            .withSchedule(simpleSchedule()
              .withIntervalInSeconds(40)
              .repeatForever())
      .build();

  // Tell quartz to schedule the job using our trigger
  scheduler.scheduleJob(job, trigger);
```

--------------------------------

### Instantiating a Specific Scheduler From Specific Properties

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/cookbook/CreateScheduler.html

Initializes a StdSchedulerFactory with a Properties object (schedulerProperties) before obtaining the Scheduler. The scheduler will not execute jobs until start() is called.

```java
StdSchedulerFactory sf = new StdSchedulerFactory();

sf.initialize(schedulerProperties);

Scheduler scheduler = sf.getScheduler();

// Scheduler will not execute jobs until it has been started (though they can be scheduled before start())
scheduler.start();
```

--------------------------------

### Setting Properties on a Custom ThreadPool

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/configuration/ConfigThreadPool.html

Example configuration for a custom thread pool implementation. Properties are set reflectively by naming them with the prefix 'org.quartz.threadPool.' followed by the property name.

```properties
org.quartz.threadPool.class = com.mycompany.goo.FooThreadPool
org.quartz.threadPool.somePropOfFooThreadPool = someValue
```

--------------------------------

### Getting data from JobDataMap during job execution

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/tutorials/tutorial-lesson-03.html

Example DumbJob that retrieves JobKey and JobDataMap from the execution context, then reads primitive values using getString and getFloat.

```java
public class DumbJob implements Job {

    public DumbJob() {
    }

    public void execute(JobExecutionContext context)
      throws JobExecutionException
    {
      JobKey key = context.getJobDetail().getKey();

      JobDataMap dataMap = context.getJobDetail().getJobDataMap();

      String jobSays = dataMap.getString("jobSays");
      float myFloatValue = dataMap.getFloat("myFloatValue");

      System.err.println("Instance " + key + " of DumbJob says: " + jobSays + ", and val is: " + myFloatValue);
    }
  }
```

--------------------------------

### Basic quartz.properties configuration

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/quick-start.html

A minimal Quartz configuration file that sets the scheduler name to 'MyScheduler', uses 3 threads in the thread pool, and stores all data in memory using RAMJobStore. This is a good starting point before moving to a database-backed job store.

```java
org.quartz.scheduler.instanceName = MyScheduler
org.quartz.threadPool.threadCount = 3
org.quartz.jobStore.class = org.quartz.simpl.RAMJobStore
```

--------------------------------

### Define jobs and triggers in jobs.xml

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/cookbook/JobInitPlugin.html

Self-explanatory example of a jobs.xml file that declaratively defines a job and a cron trigger. The job includes a job-data-map with entries, and the trigger fires every night at 4:30 am using the cron expression '0 30 4 * * ?'.

```xml

<?xml version='1.0' encoding='utf-8'?>
<job-scheduling-data xmlns="http://www.quartz-scheduler.org/xml/JobSchedulingData"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://www.quartz-scheduler.org/xml/JobSchedulingData http://www.quartz-scheduler.org/xml/job_scheduling_data_1_8.xsd"
  version="1.8">

    <schedule>
        <job>
            <name>my-very-clever-job</name>
            <group>MYJOB_GROUP</group>

            <description>The job description</description>
            <job-class>com.acme.scheduler.job.CleverJob</job-class>
            <job-data-map allows-transient-data="false">

                <entry>
                    <key>burger-type</key>
                    <value>hotdog</value>
                </entry>
                <entry>

                    <key>dressing-list</key>
                    <value>ketchup,mayo</value>
                </entry>
            </job-data-map>
        </job>

        <trigger>
            <cron>
                <name>my-trigger</name>
                <group>MYTRIGGER_GROUP</group>
                <job-name>my-very-clever-job</job-name>

                <job-group>MYJOB_GROUP</job-group>
                <!-- trigger every night at 4:30 am -->
                <!-- do not forget to light the kitchen's light -->
                <cron-expression>0 30 4 * * ?</cron-expression>

            </cron>
        </trigger>
    </schedule>
</job-scheduling-data>

```

--------------------------------

### JobListener Interface Definition

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/tutorials/tutorial-lesson-07.html

Defines the org.quartz.JobListener interface with methods for job execution start, veto, and completion events. Implement this interface to receive job-related events.

```java
public interface JobListener {

    public String getName();

    public void jobToBeExecuted(JobExecutionContext context);

    public void jobExecutionVetoed(JobExecutionContext context);

    public void jobWasExecuted(JobExecutionContext context,
            JobExecutionException jobException);

}
```

--------------------------------

### Create a SchedulerListener by extending SchedulerListenerSupport

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/cookbook/SchedulerListeners.html

Extend SchedulerListenerSupport and override methods for events you're interested in, such as schedulerStarted, schedulerShutdown, and jobScheduled. The example defines a class MyOtherSchedulerListener in package foo.

```java
package foo;

import org.quartz.Trigger;
import org.quartz.listeners.SchedulerListenerSupport;

public class MyOtherSchedulerListener extends SchedulerListenerSupport {

    @Override
    public void schedulerStarted() {
        // do something with the event
    }

    @Override
    public void schedulerShutdown() {
        // do something with the event
    }

    @Override
    public void jobScheduled(Trigger trigger) {
        // do something with the event
    }

}
```

--------------------------------

### Create three SimpleTriggers with different priorities

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/examples/Example14.html

Creates three triggers that all start 5 seconds from now but have different priorities (1, default 5, and 10) and repeat at different intervals. The priorities act as tie-breakers when triggers compete for the single thread.

```java
// Calculate the start time of all triggers as 5 seconds from now
Date startTime = futureDate(5, IntervalUnit.SECOND);

// First trigger has priority of 1, and will repeat after 5 seconds
Trigger trigger1 = newTrigger()
    .withIdentity("PriorityNeg5Trigger5SecondRepeat")
    .startAt(startTime)
    .withSchedule(simpleSchedule().withRepeatCount(1).withIntervalInSeconds(5))
    .withPriority(1)
    .forJob(job)
    .build();

// Second trigger has default priority of 5 (default), and will repeat after 10 seconds
Trigger trigger2 = newTrigger()
    .withIdentity("Priority5Trigger10SecondRepeat")
    .startAt(startTime)
    .withSchedule(simpleSchedule().withRepeatCount(1).withIntervalInSeconds(10))
    .forJob(job)
    .build();

// Third trigger has priority 10, and will repeat after 15 secondsTrigger trigger3 = newTrigger()
    .withIdentity("Priority10Trigger15SecondRepeat")
    .startAt(startTime)
    .withSchedule(simpleSchedule().withRepeatCount(1).withIntervalInSeconds(15))
    .withPriority(10)
    .forJob(job)
    .build();
```

--------------------------------

### CronTrigger Example 2 - fires every 5 minutes at 10 seconds after the minute

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/tutorials/tutorial-lesson-06.html

Cron expression that fires every 5 minutes, at 10 seconds after the minute (e.g., 10:00:10 am, 10:05:10 am).

```cron
10 0/5 * * * ?
```

--------------------------------

### Using Setter Injection with JobDataMap

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/tutorials/tutorial-lesson-03.html

This example demonstrates how to use setter methods to receive JobDataMap values. The default JobFactory will automatically call these setters when the job is instantiated, allowing for cleaner execute() code.

```java
public class DumbJob implements Job {


    String jobSays;
    float myFloatValue;
    ArrayList state;

    public DumbJob() {
    }

    public void execute(JobExecutionContext context)
      throws JobExecutionException
    {
      JobKey key = context.getJobDetail().getKey();

      JobDataMap dataMap = context.getMergedJobDataMap();  // Note the difference from the previous example

      state.add(new Date());

      System.err.println("Instance " + key + " of DumbJob says: " + jobSays + ", and val is: " + myFloatValue);
    }

    public void setJobSays(String jobSays) {
      this.jobSays = jobSays;
    }

    public void setMyFloatValue(float myFloatValue) {
      this.myFloatValue = myFloatValue;
    }

    public void setState(ArrayList state) {
      this.state = state;
    }

  }
```

--------------------------------

### Set connection validation query in quartz.properties

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/faq.html

Specify a validation query for a Quartz-managed data source to detect failed connections. The example uses 'select 0 from dual', which is efficient for Oracle; other databases require an appropriate query.

```properties
org.quartz.dataSource.myDS.validationQuery=select 0 from dual
```

--------------------------------

### Schedule a Job with Quartz (Java)

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/cookbook/ScheduleJob.html

Use this snippet to schedule a job that fires immediately and does not repeat. It defines a job instance with identity 'job1' in group 'group1', creates a trigger with identity 'trigger1' in group 'group1' that starts now, and schedules the job with the scheduler. Note: the code uses 'job' in the schedule call, but the variable is defined as 'job1'.

```java
// Define job instance
JobDetail job1 = newJob(ColorJob.class)
    .withIdentity("job1", "group1")
    .build();

// Define a Trigger that will fire "now", and not repeat
Trigger trigger = newTrigger()
    .withIdentity("trigger1", "group1")
    .startNow()
    .build();

// Schedule the job with the trigger
sched.scheduleJob(job, trigger);
```

--------------------------------

### Build a trigger for a specific moment in time, then repeating every ten seconds ten times

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/tutorials/tutorial-lesson-05.html

Creates a trigger that fires at a start time and then repeats every 10 seconds for 10 repeats (total 11 firings). Uses a JobDetail handle for the job.

```java
  trigger = newTrigger()
    .withIdentity("trigger3", "group1")
    .startAt(myTimeToStartFiring)  // if a start time is not given (if this line were omitted), "now" is implied
    .withSchedule(simpleSchedule()
        .withIntervalInSeconds(10)
        .withRepeatCount(10)) // note that 10 repeats will give a total of 11 firings
    .forJob(myJob) // identify job with handle to its JobDetail itself
    .build();
```

--------------------------------

### Using SimpleTrigger with 48-hour interval

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/cookbook/BiDailyTrigger

Creates a SimpleTrigger that starts at 3:00 PM tomorrow and repeats every 48 hours. Note that due to daylight saving time shifts, the firing time may not always be 3:00 PM.

```java
trigger = newTrigger()
    .withIdentity("trigger3", "group1")
    .startAt(tomorrowAt(15, 0, 0)  // first fire time 15:00:00 tomorrow
    .withSchedule(simpleSchedule()
            .withIntervalInHours(2 * 24) // interval is actually set at 48 hours' worth of milliseconds
            .repeatForever())
    .build();
```

--------------------------------

### Schedule Job #2 every other minute at 15 seconds

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/examples/Example3.html

Defines a job and a cron trigger with expression "15 0/2 * * * ?" to run every other minute starting at 15 seconds past the minute, then schedules it.

```java
job = newJob(SimpleJob.class)
    .withIdentity("job2", "group1")
    .build();

trigger = newTrigger()
    .withIdentity("trigger2", "group1")
    .withSchedule(cronSchedule("15 0/2 * * * ?"))
    .build();

sched.scheduleJob(job, trigger);
```

--------------------------------

### Configure QuartzInitializerServlet in web.xml

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/cookbook/ServletInitScheduler.html

Adds a start-up servlet to web.xml to initialize Quartz. Uses an init parameter for shutdown-on-unload and sets load-on-startup to 2. The servlet class is org.quartz.ee.servlet.QuartzInitializerServlet.

```xml
   
...
	<servlet>
	  <servlet-name>QuartzInitializer</servlet-name>
	  <servlet-class>org.quartz.ee.servlet.QuartzInitializerServlet</servlet-class>
	  <init-param>

	    <param-name>shutdown-on-unload</param-name>
	    <param-value>true</param-value>
	  </init-param>
	  <load-on-startup>2</load-on-startup>

	</servlet>
...

```

--------------------------------

### Configure QuartzInitializerListener in web.xml

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/cookbook/ServletInitScheduler.html

Adds a context listener to web.xml to initialize Quartz. Uses context parameters for config file path, shutdown-on-unload, wait-on-shutdown, and start-scheduler-on-load. The listener class is org.quartz.ee.servlet.QuartzInitializerListener.

```xml
   
...
     <context-param>
         <param-name>quartz:config-file</param-name>
         <param-value>/some/path/my_quartz.properties</param-value>
     </context-param>
     <context-param>
         <param-name>quartz:shutdown-on-unload</param-name>
         <param-value>true</param-value>
     </context-param>
     <context-param>
         <param-name>quartz:wait-on-shutdown</param-name>
         <param-value>false</param-value>
     </context-param>
     <context-param>
         <param-name>quartz:start-scheduler-on-load</param-name>
         <param-value>true</param-value>
     </context-param>
...
     <listener>
         <listener-class>
             org.quartz.ee.servlet.QuartzInitializerListener
         </listener-class>
     </listener>
...

```

--------------------------------

### Build a trigger for a specific moment in time, with no repeats

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/tutorials/tutorial-lesson-05.html

Creates a SimpleTrigger that fires once at a specific start time, identifying the job by name and group strings.

```java
  SimpleTrigger trigger = (SimpleTrigger) newTrigger()
    .withIdentity("trigger1", "group1")
    .startAt(myStartTime) // some Date
    .forJob("job1", "group1") // identify job with name, group strings
    .build();
```

--------------------------------

### Using CalendarIntervalTrigger with 90-minute interval

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/cookbook/NinetyMinTrigger.html

Creates a trigger with identity 'trigger3' in group 'group1', starts immediately, and repeats every 90 minutes using calendarIntervalSchedule().

```java
trigger = newTrigger()
    .withIdentity("trigger3", "group1")
    .startNow()
    .withSchedule(calendarIntervalSchedule()
            .withIntervalInMinutes(90))
    .build();
```

--------------------------------

### Create SimpleTrigger for next even minute

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/examples/Example1.html

Computes a run time at the next even minute and creates a SimpleTrigger with identity 'trigger1' in group 'group1' that starts at that time.

```java
// compute a time that is on the next round minute
Date runTime = evenMinuteDate(new Date());

// Trigger the job to run on the next round minute
Trigger trigger = newTrigger()
    .withIdentity("trigger1", "group1")
    .startAt(runTime)
    .build();
```

--------------------------------

### Define a job and trigger using Quartz builder DSL

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/tutorials/tutorial-lesson-02.html

Shows how to create a JobDetail and Trigger using the fluent builder API, then schedule the job with the scheduler. The job is tied to HelloJob.class, named 'myJob' in group 'group1', and the trigger runs now and every 40 seconds.

```java
  // define the job and tie it to our HelloJob class
  JobDetail job = newJob(HelloJob.class)
      .withIdentity("myJob", "group1") // name "myJob", group "group1"
      .build();

  // Trigger the job to run now, and then every 40 seconds
  Trigger trigger = newTrigger()
      .withIdentity("myTrigger", "group1")
      .startNow()
      .withSchedule(simpleSchedule()
          .withIntervalInSeconds(40)
          .repeatForever())
      .build();

  // Tell quartz to schedule the job using our trigger
  sched.scheduleJob(job, trigger);
```

--------------------------------

### Using SimpleTrigger with 90-minute interval

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/cookbook/NinetyMinTrigger.html

Creates a trigger with identity 'trigger3' in group 'group1', starts immediately, and repeats every 90 minutes indefinitely using simpleSchedule().

```java
trigger = newTrigger()
    .withIdentity("trigger3", "group1")
    .startNow()
    .withSchedule(simpleSchedule()
            .withIntervalInMinutes(90)
            .repeatForever())
    .build();
```

--------------------------------

### Configure Quartz to use TerracottaJobStore

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/tutorials/tutorial-lesson-09.html

Sets the JobStore class to TerracottaJobStore and specifies the Terracotta server URL. This provides scaling and robustness without a database.

```properties
org.quartz.jobStore.class = org.terracotta.quartz.TerracottaJobStore
org.quartz.jobStore.tcConfigUrl = localhost:9510
```

--------------------------------

### General pattern for defining a Quartz plugin

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/configuration/ConfigPlugins.html

Shows the general configuration pattern for defining a Quartz plugin. The class must have a no-arg constructor, and properties are set reflectively. Only primitive data type values (including Strings) are supported.

```properties
org.quartz.plugin.NAME.class = com.foo.MyPluginClass
org.quartz.plugin.NAME.propName = propValue
org.quartz.plugin.NAME.prop2Name = prop2Value
```

--------------------------------

### Sample configuration of JobInitializationPlugin

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/configuration/ConfigPlugins.html

Configures the XMLSchedulingDataProcessorPlugin, which reads jobs and triggers from an XML file and adds them to the scheduler during initialization. It can also delete existing data. The fileNames property points to the XML file, and failOnFileNotFound is set to true.

```properties
org.quartz.plugin.jobInitializer.class = \
  org.quartz.plugins.xml.XMLSchedulingDataProcessorPlugin
org.quartz.plugin.jobInitializer.fileNames = \
  data/my_job_data.xml
org.quartz.plugin.jobInitializer.failOnFileNotFound = true
```

--------------------------------

### Standby and restart a Quartz scheduler

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/cookbook/SchedulerStandby.html

Call scheduler.standby() to pause trigger firing and job execution. Call scheduler.start() to resume. The comment notes that start() was previously invoked on the scheduler.

```java
   
// start() was previously invoked on the scheduler

scheduler.standby();

// now the scheduler will not fire triggers / execute jobs

// ...

scheduler.start();

// now the scheduler will fire triggers and execute jobs
```

--------------------------------

### HelloJob execute method

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/examples/Example1.html

Implements the Job interface's execute method to log a 'Hello World' message with the current date/time. This is the job that runs when the trigger fires.

```java
public void execute(JobExecutionContext context) throws JobExecutionException {
    // Say Hello to the World and display the date/time
    _log.info("Hello World! - " + new Date());
}
```

--------------------------------

### Quartz properties for clustered JDBC JobStore

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/configuration/ConfigJDBCJobStoreClustering.html

Use this configuration to set up a Quartz scheduler cluster with the JDBC JobStore. It sets the scheduler instance name and ID, configures a SimpleThreadPool with 25 threads, enables clustering with a check-in interval of 20000 ms, and defines an Oracle data source. The job store uses the OracleDelegate and the QRTZ_ table prefix.

```properties
#============================================================================
# Configure Main Scheduler Properties  
#============================================================================

org.quartz.scheduler.instanceName = MyClusteredScheduler
org.quartz.scheduler.instanceId = AUTO

#============================================================================
# Configure ThreadPool  
#============================================================================

org.quartz.threadPool.class = org.quartz.simpl.SimpleThreadPool
org.quartz.threadPool.threadCount = 25
org.quartz.threadPool.threadPriority = 5

#============================================================================
# Configure JobStore  
#============================================================================

org.quartz.jobStore.misfireThreshold = 60000

org.quartz.jobStore.class = org.quartz.impl.jdbcjobstore.JobStoreTX
org.quartz.jobStore.driverDelegateClass = org.quartz.impl.jdbcjobstore.oracle.OracleDelegate
org.quartz.jobStore.useProperties = false
org.quartz.jobStore.dataSource = myDS
org.quartz.jobStore.tablePrefix = QRTZ_

org.quartz.jobStore.isClustered = true
org.quartz.jobStore.clusterCheckinInterval = 20000

#============================================================================
# Configure Datasources  
#============================================================================

org.quartz.dataSource.myDS.driver = oracle.jdbc.driver.OracleDriver
org.quartz.dataSource.myDS.URL = jdbc:oracle:thin:@polarbear:1521:dev
org.quartz.dataSource.myDS.user = quartz
org.quartz.dataSource.myDS.password = quartz
org.quartz.dataSource.myDS.maxConnections = 5
org.quartz.dataSource.myDS.validationQuery=select 0 from dual
```

--------------------------------

### CronTrigger Example 3 - fires at 10:30, 11:30, 12:30, 13:30 on Wednesdays and Fridays

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/tutorials/tutorial-lesson-06.html

Cron expression that fires at 10:30, 11:30, 12:30, and 13:30 on every Wednesday and Friday.

```cron
0 30 10-13 ? * WED,FRI
```

--------------------------------

### Static Imports for Matchers and Keys

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/tutorials/tutorial-lesson-07.html

Static imports for matcher and key classes to make matcher definitions cleaner. Use these imports to simplify the listener registration code.

```java
import static org.quartz.JobKey.*;
import static org.quartz.impl.matchers.KeyMatcher.*;
import static org.quartz.impl.matchers.GroupMatcher.*;
import static org.quartz.impl.matchers.AndMatcher.*;
import static org.quartz.impl.matchers.OrMatcher.*;
import static org.quartz.impl.matchers.EverythingMatcher.*;
...etc.
```

--------------------------------

### Create SimpleTrigger with 10-second interval

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/cookbook/TenSecTrigger.html

Use SimpleTrigger to schedule a trigger that fires every 10 seconds, repeating forever. The trigger is built with identity 'trigger3' in group 'group1' and starts immediately.

```java
trigger = newTrigger()
    .withIdentity("trigger3", "group1")
    .startNow()
    .withSchedule(simpleSchedule()
            .withIntervalInSeconds(10)
            .repeatForever())
    .build();
```

--------------------------------

### Using CalendarIntervalTrigger with 2-day interval

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/cookbook/BiDailyTrigger

Creates a CalendarIntervalTrigger that starts at 3:00 PM tomorrow and repeats every 2 calendar days, preserving the time of day across daylight saving changes.

```java
trigger = newTrigger()
    .withIdentity("trigger3", "group1")
    .startAt(tomorrowAt(15, 0, 0)  // 15:00:00 tomorrow
    .withSchedule(calendarIntervalSchedule()
            .withIntervalInDays(2)) // interval is set in calendar days
    .build();
```

--------------------------------

### Set org.quartz.jobStore.class to RAMJobStore

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/configuration/ConfigRAMJobStore.html

Selects RAMJobStore as the scheduler's job store by setting the 'org.quartz.jobStore.class' property. All scheduling information is stored in memory and lost when the process terminates.

```properties
org.quartz.jobStore.class = org.quartz.simpl.RAMJobStore
```

--------------------------------

### JobExceptionExample - Schedule BadJob1 with SimpleTrigger

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/examples/Example6.html

Schedules BadJob1 to run every 3 seconds indefinitely using a SimpleTrigger with repeatForever().

```java
JobDetail job = newJob(BadJob1.class)
    .withIdentity("badJob1", "group1")
    .build();

SimpleTrigger trigger = newTrigger()
    .withIdentity("trigger1", "group1")
    .startAt(startTime)
    .withSchedule(simpleSchedule()
            .withIntervalInSeconds(3)
            .repeatForever())
    .build();

Date ft = sched.scheduleJob(job, trigger);
```

--------------------------------

### JobExceptionExample - Schedule BadJob2 with SimpleTrigger

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/examples/Example6.html

Schedules BadJob2 to run every 3 seconds indefinitely using a SimpleTrigger with repeatForever().

```java
job = newJob(BadJob2.class)
    .withIdentity("badJob2", "group1")
    .build();

trigger = newTrigger()
    .withIdentity("trigger2", "group1")
    .startAt(startTime)
    .withSchedule(simpleSchedule()
            .withIntervalInSeconds(3)
            .repeatForever())
    .build();

ft = sched.scheduleJob(job, trigger);
```

--------------------------------

### Create Scheduler with StdSchedulerFactory

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/examples/Example14.html

Creates a Scheduler instance using a specific Quartz properties file. The properties file configures a RAM-based scheduler with a single thread.

```java
SchedulerFactory sf = new StdSchedulerFactory(
    "org/quartz/examples/example14/quartz_priority.properties");
Scheduler sched = sf.getScheduler();
```

--------------------------------

### Static imports for Quartz builder DSL

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/tutorials/tutorial-lesson-02.html

Lists the static imports needed to use the Quartz builder DSL methods (JobBuilder, SimpleScheduleBuilder, CronScheduleBuilder, CalendarIntervalScheduleBuilder, TriggerBuilder, DateBuilder).

```java
import static org.quartz.JobBuilder.*;
import static org.quartz.SimpleScheduleBuilder.*;
import static org.quartz.CronScheduleBuilder.*;
import static org.quartz.CalendarIntervalScheduleBuilder.*;
import static org.quartz.TriggerBuilder.*;
import static org.quartz.DateBuilder.*;
```

--------------------------------

### Configure JDBCJobStore with the Table Prefix

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/tutorials/tutorial-lesson-09.html

Sets the tablePrefix property to QRTZ_ to inform the JobStore which table prefix is used.

```properties
org.quartz.jobStore.tablePrefix = QRTZ_
```

--------------------------------

### Get Triggers of a Job with getTriggersOfJob

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/cookbook/JobTriggers.html

Use this snippet to retrieve all triggers associated with a specific job. The job is identified by its name and group using the jobKey method. The method returns a List of Trigger objects.

```java
List<Trigger> jobTriggers = sched.getTriggersOfJob(jobKey("jobName", "jobGroup"));
```

--------------------------------

### Configure a Global JobListener

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/configuration/ConfigListeners.html

Defines a global JobListener in the Quartz configuration file. The class must have a no-arg constructor, and properties are set reflectively with primitive data types (including Strings) supported.

```properties
org.quartz.jobListener.NAME.class = com.foo.MyListenerClass
org.quartz.jobListener.NAME.propName = propValue
org.quartz.jobListener.NAME.prop2Name = prop2Value
```

--------------------------------

### Configure XMLSchedulingDataProcessorPlugin in quartz.properties

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/cookbook/JobInitPlugin.html

Excerpt from quartz.properties that enables the XMLSchedulingDataProcessorPlugin. The fileNames property points to jobs.xml; failOnFileNotFound controls exception on missing files; scanInterval sets reload interval in seconds (0 disables); wrapInUserTransaction should be true when using JobStoreCMT.

```java

#===================================================
# Configure the Job Initialization Plugin
#===================================================

org.quartz.plugin.jobInitializer.class = org.quartz.plugins.xml.XMLSchedulingDataProcessorPlugin
org.quartz.plugin.jobInitializer.fileNames = jobs.xml
org.quartz.plugin.jobInitializer.failOnFileNotFound = true
org.quartz.plugin.jobInitializer.scanInterval = 10
org.quartz.plugin.jobInitializer.wrapInUserTransaction = false

```

--------------------------------

### Create indexes on Quartz tables

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/faq.html

SQL statements to create indexes on Quartz tables, especially on the TRIGGER table's NEXT_FIRE_TIME and TRIGGER_STATE fields, and on all columns of the FIRED_TRIGGERS table. These indexes can improve JDBCJobStore performance.

```sql
create index idx_qrtz_t_next_fire_time on qrtz_triggers(NEXT_FIRE_TIME);
create index idx_qrtz_t_state on qrtz_triggers(TRIGGER_STATE);
create index idx_qrtz_t_nf_st on qrtz_triggers(TRIGGER_STATE,NEXT_FIRE_TIME);
create index idx_qrtz_ft_trig_name on qrtz_fired_triggers(TRIGGER_NAME);
create index idx_qrtz_ft_trig_group on qrtz_fired_triggers(TRIGGER_GROUP);
create index idx_qrtz_ft_trig_name on qrtz_fired_triggers(TRIGGER_NAME);
create index idx_qrtz_ft_trig_n_g on \
    qrtz_fired_triggers(TRIGGER_NAME,TRIGGER_GROUP);
create index idx_qrtz_ft_trig_inst_name on qrtz_fired_triggers(INSTANCE_NAME);
create index idx_qrtz_ft_job_name on qrtz_fired_triggers(JOB_NAME);
create index idx_qrtz_ft_job_group on qrtz_fired_triggers(JOB_GROUP);
create index idx_qrtz_t_next_fire_time_misfire on \
    qrtz_triggers(MISFIRE_INSTR,NEXT_FIRE_TIME);
create index idx_qrtz_t_nf_st_misfire on \
    qrtz_triggers(MISFIRE_INSTR,NEXT_FIRE_TIME,TRIGGER_STATE);
create index idx_qrtz_t_nf_st_misfire_grp on \
    qrtz_triggers(MISFIRE_INSTR,NEXT_FIRE_TIME,TRIGGER_GROUP,TRIGGER_STATE);
```

--------------------------------

### CronTrigger Example 4 - fires every half hour between 8-10 am on the 5th and 20th of every month

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/tutorials/tutorial-lesson-06.html

Cron expression that fires every half hour between 8 am and 10 am on the 5th and 20th of every month. Note: does not fire at 10:00 am.

```cron
0 0/30 8-9 5,20 * ?
```

--------------------------------

### Putting data into JobDataMap while building JobDetail

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/tutorials/tutorial-lesson-03.html

Shows how to add serializable data to JobDataMap using usingJobData() when building a JobDetail for DumbJob.

```java
  // define the job and tie it to our DumbJob class
  JobDetail job = newJob(DumbJob.class)
      .withIdentity("myJob", "group1") // name "myJob", group "group1"
      .usingJobData("jobSays", "Hello World!")
      .usingJobData("myFloatValue", 3.141f)
      .build();
```

--------------------------------

### Static imports for Quartz builders

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/tutorials/tutorial-lesson-06.html

Static imports required for using TriggerBuilder, CronScheduleBuilder, and DateBuilder in a DSL-style.

```java
import static org.quartz.TriggerBuilder.*;
import static org.quartz.CronScheduleBuilder.*;
import static org.quartz.DateBuilder.*:
```

--------------------------------

### Implement JobListener interface

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/cookbook/JobListeners.html

Create a custom JobListener by implementing the JobListener interface. The listener must provide a name and implement the three callback methods: jobToBeExecuted, jobWasExecuted, and jobExecutionVetoed.

```java
package foo;

import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.quartz.JobListener;

public class MyJobListener implements JobListener {

    private String name;

    public MyJobListener(String name) {
        this.name = name;
    }

    public String getName() {
        return name;
    }

    public void jobToBeExecuted(JobExecutionContext context) {
        // do something with the event
    }

    public void jobWasExecuted(JobExecutionContext context,
            JobExecutionException jobException) {
        // do something with the event
    }

    public void jobExecutionVetoed(JobExecutionContext context) {
        // do something with the event
    }
}
```

--------------------------------

### Static imports for TriggerBuilder, SimpleScheduleBuilder, and DateBuilder

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/tutorials/tutorial-lesson-05.html

Required static imports to use the DSL-style builders for creating SimpleTrigger instances.

```java
import static org.quartz.TriggerBuilder.*;
import static org.quartz.SimpleScheduleBuilder.*;
import static org.quartz.DateBuilder.*:
```

--------------------------------

### Define job instance with JobDataMap

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/cookbook/DefineJobWithData.html

Creates a JobDetail instance using the static newJob method, setting the job identity and adding a JobDataMap entry with usingJobData. This is the standard way to define a job with input data.

```java
// Define job instance
JobDetail job1 = newJob(MyJobClass.class)
    .withIdentity("job1", "group1")
    .usingJobData("someProp", "someValue")
    .build();
```

--------------------------------

### Static import for JobBuilder DSL

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/tutorials/tutorial-lesson-03.html

Use this static import to enable the fluent DSL style when building JobDetail instances with JobBuilder.

```java
import static org.quartz.JobBuilder.*;
```

--------------------------------

### Set Job #1 parameters

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/examples/Example4.html

Sets the favorite color to 'Green' and initializes the execution count to 1 for Job #1.

```java
job1.getJobDataMap().put(ColorJob.FAVORITE_COLOR, "Green");
job1.getJobDataMap().put(ColorJob.EXECUTION_COUNT, 1);
```

--------------------------------

### Configure a Global TriggerListener

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/configuration/ConfigListeners.html

Defines a global TriggerListener in the Quartz configuration file. The class must have a no-arg constructor, and properties are set reflectively with primitive data types (including Strings) supported.

```properties
org.quartz.triggerListener.NAME.class = com.foo.MyListenerClass
org.quartz.triggerListener.NAME.propName = propValue
org.quartz.triggerListener.NAME.prop2Name = prop2Value
```

--------------------------------

### Build a trigger that will fire now, then repeat every five minutes, until the hour 22:00

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/tutorials/tutorial-lesson-05.html

Creates a trigger that fires immediately and repeats every 5 minutes until 22:00, using repeatForever() and endAt with DateBuilder's dateOf.

```java
  trigger = newTrigger()
    .withIdentity("trigger7", "group1")
    .withSchedule(simpleSchedule()
        .withIntervalInMinutes(5)
        .repeatForever())
    .endAt(dateOf(22, 0, 0))
    .build();
```

--------------------------------

### Configure JDBCJobStore with the name of the DataSource to use

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/tutorials/tutorial-lesson-09.html

Sets the dataSource property to myDS, which must be defined elsewhere in the Quartz properties.

```properties
org.quartz.jobStore.dataSource = myDS
```

--------------------------------

### Set Job #2 parameters

Source: https://www.quartz-scheduler.org/documentation/quartz-2.5.x/examples/Example4.html

Sets the favorite color to 'Red' and initializes the execution count to 1 for Job #2.

```java
job2.getJobDataMap().put(ColorJob.FAVORITE_COLOR, "Red");
job2.getJobDataMap().put(ColorJob.EXECUTION_COUNT, 1);
```
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