Constructor threw exception; nested exception is java.lang.NullPointerException

[Santhosh Puttu]

Hi I am trying to use quartz scheduler in my application.
quartz xml is imported in to spring-app-context xml.
My code is as follows :-

Quartz-scheduler.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
	http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
 
	<bean id="runMeTask" class="com.marriott.base.components.batch.quartz.RunMeTask" />
 
 
 
	<!-- Spring Quartz -->
	
	<bean name="runMeJob" class="org.springframework.scheduling.quartz.JobDetailBean">
 
		<property name="jobClass" value="com.marriott.base.components.batch.quartz.RunMeJob" />
 
		<property name="jobDataAsMap">
		  <map>
			<entry key="runMeTask" value-ref="runMeTask" />
		  </map>
		</property>
 
	</bean>

	
	 <!--<bean id="runMeJob" 
            class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean"> 
		<property name="targetObject" ref="runMeTask" /> 
		<property name="targetMethod" value="printMe" /> 
	</bean> -->
	
 
	<!-- Simple Trigger, run every 5 seconds -->
	<bean id="simpleTrigger" 
                class="org.springframework.scheduling.quartz.SimpleTriggerBean">
 
		<property name="jobDetail" ref="runMeJob" />
		<property name="repeatInterval" value="5000" />
		<property name="startDelay" value="70000" />
 
	</bean>
 
	<!-- Cron Trigger, run every 5 seconds -->
	<bean id="cronTrigger" 
                class="org.springframework.scheduling.quartz.CronTriggerBean">
 
		<property name="jobDetail" ref="runMeJob" />
		<property name="cronExpression" value="0/5 * * * * ?" />
 
	</bean>
 
	<bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
		<property name="jobDetails">
			<list>
				<ref bean="runMeJob" />
			</list>
		</property>
 
		<property name="triggers">
			<list>
				<ref bean="simpleTrigger" />
			</list>
		</property>
	</bean>
 
</beans>

RunMeTask.java

/**
 * 
 */
package com.marriott.base.components.batch.quartz;

import java.util.Iterator;
import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.context.support.FileSystemXmlApplicationContext;
import org.springframework.stereotype.Service;

import com.marriott.common.dao.entities.Event;
import com.marriott.rcd.business.event.service.EventService;
import com.marriott.rcd.business.notification.service.NotificationService;

/**
 * @author m1020950
 * 
 */

public class RunMeTask
{
	

	@Autowired
	ApplicationContext applicationContext;
	
	@Autowired
	NotificationService notificationService;

	EventService eventServiceBean = applicationContext.getBean(
			"eventServiceBean", EventService.class);
	
	public RunMeTask() {
		// TODO Auto-generated constructor stub
	}
	
	

	public void jobToBeTriggered() {
		System.out.println("List of Events = ");

		List<Event> listOfEvents = eventServiceBean
				.getOpenEventsForMailSending();
		for (Iterator iterator = listOfEvents.iterator(); iterator.hasNext();) {
			Event event = (Event) iterator.next();
			Integer eventId = event.getEventId(); 
			notificationService.sendPreEventNotification(eventId);
			
		}
		System.out.println("list of events = " + listOfEvents);
	}

}

RunMeJob.java

package com.marriott.base.components.batch.quartz;

import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.quartz.QuartzJobBean;
import org.springframework.stereotype.Service;

/**
 * @author m1020950
 *
 */

public class RunMeJob extends QuartzJobBean
{
	private RunMeTask runMeTask;
	 
	public void setRunMeTask(RunMeTask runMeTask) {
		this.runMeTask = runMeTask;
	}
 
	protected void executeInternal(JobExecutionContext context)
		throws JobExecutionException {
		System.out.println("started");
		runMeTask.jobToBeTriggered();
	}

}

But when i start the server it gives me following error. And my Scheduler wont start at all.

2013-03-23 12:43:35|INFO|o.s.o.j.LocalContainerEntityManagerFactoryBean|localhost-startStop-1|Closing JPA EntityManagerFactory for persistence unit 'default'
2013-03-23 12:43:35|ERROR|o.s.web.context.ContextLoader|localhost-startStop-1|Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'runMeTask' defined in ServletContext resource [/WEB-INF/spring/quartz-scheduler.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.marriott.base.components.batch.quartz.RunMeTask]: Constructor threw exception; nested exception is java.lang.NullPointerException
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:997) ~[spring-beans-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:943) ~[spring-beans-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:485) ~[spring-beans-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) ~[spring-beans-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294) ~[spring-beans-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225) ~[spring-beans-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291) ~[spring-beans-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) ~[spring-beans-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:605) ~[spring-beans-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:925) ~[spring-context-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:472) ~[spring-context-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:383) ~[spring-web-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:283) ~[spring-web-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:111) [spring-web-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4791) [catalina.jar:7.0.34]
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5285) [catalina.jar:7.0.34]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) [catalina.jar:7.0.34]
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559) [catalina.jar:7.0.34]
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549) [catalina.jar:7.0.34]
	at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source) [na:1.6.0_38]
	at java.util.concurrent.FutureTask.run(Unknown Source) [na:1.6.0_38]
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source) [na:1.6.0_38]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [na:1.6.0_38]
	at java.lang.Thread.run(Unknown Source) [na:1.6.0_38]
Caused by: org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.marriott.base.components.batch.quartz.RunMeTask]: Constructor threw exception; nested exception is java.lang.NullPointerException
	at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:162) ~[spring-beans-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:87) ~[spring-beans-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:990) ~[spring-beans-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	... 23 common frames omitted
Caused by: java.lang.NullPointerException: null
	at com.marriott.base.components.batch.quartz.RunMeTask.<init>(RunMeTask.java:35) ~[marriott-rcd-business.jar:na]
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.6.0_38]
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) ~[na:1.6.0_38]
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) ~[na:1.6.0_38]
	at java.lang.reflect.Constructor.newInstance(Unknown Source) ~[na:1.6.0_38]
	at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:147) ~[spring-beans-3.1.3.RELEASE.jar:3.1.3.RELEASE]
	... 25 common frames omitted
Mar 23, 2013 12:43:35 PM org.apache.catalina.core.StandardContext listenerStart
SEVERE: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'runMeTask' defined in ServletContext resource [/WEB-INF/spring/quartz-scheduler.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.marriott.base.components.batch.quartz.RunMeTask]: Constructor threw exception; nested exception is java.lang.NullPointerException
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:997)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:943)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:485)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:605)
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:925)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:472)
	at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:383)
	at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:283)
	at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:111)
	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4791)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5285)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
	at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
	at java.util.concurrent.FutureTask.run(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)
Caused by: org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.marriott.base.components.batch.quartz.RunMeTask]: Constructor threw exception; nested exception is java.lang.NullPointerException
	at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:162)
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:87)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:990)
	... 23 more
Caused by: java.lang.NullPointerException
	at com.marriott.base.components.batch.quartz.RunMeTask.<init>(RunMeTask.java:35)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
	at java.lang.reflect.Constructor.newInstance(Unknown Source)
	at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:147)
	... 25 more
Mar 23, 2013 12:43:35 PM org.apache.catalina.core.StandardContext startInternal
SEVERE: Error listenerStart
Mar 23, 2013 12:43:35 PM org.apache.catalina.core.StandardContext startInternal
SEVERE: Context [/webapp] startup failed due to previous errors
Mar 23, 2013 12:43:35 PM org.apache.catalina.core.ApplicationContext log
INFO: Closing Spring root WebApplicationContext
Mar 23, 2013 12:43:35 PM org.apache.catalina.loader.WebappClassLoader clearReferencesJdbc
SEVERE: The web application [/webapp] registered the JDBC driver [com.mysql.jdbc.Driver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.
Mar 23, 2013 12:43:35 PM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: The web application [/webapp] appears to have started a thread named [Abandoned connection cleanup thread] but has failed to stop it. This is very likely to create a memory leak.
Mar 23, 2013 12:43:35 PM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: The web application [/webapp] appears to have started a thread named [net.sf.ehcache.CacheManager@58fe12] but has failed to stop it. This is very likely to create a memory leak.
Mar 23, 2013 12:43:35 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["http-bio-8080"]
Mar 23, 2013 12:43:35 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["ajp-bio-8009"]
Mar 23, 2013 12:43:35 PM org.apache.catalina.startup.Catalina start

[Mark Spritzler]

Something doesn't line up.

Here is your exception

Caused by: java.lang.NullPointerException
at com.marriott.base.components.batch.quartz.RunMeTask.<init>(RunMeTask.java:35)

So line 35 in RunMeTask.

You don't have a line 35 with code in that class. There is line 34 that runs into line 35.

So I think maybe you don't have the same code running as posted?

Anyway. Why are you injecting the ApplciationContext into the RunMeTask. Why not just @Autowired in the Service class you want instead?

Mark