Exclude a file from GIT Diff

p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px 'Andale Mono'; color: #29f914; background-color: #000000} span.s1 {font-variant-ligatures: no-common-ligatures} git diff -- . ':(exclude)com/watchmouse/rest/utils/abc.java'git diff -- . ':(exclude)db/irrelevant.php'

DEBUGGING THE DREADED “SEVERE: ERROR LISTENERSTART” AND “SEVERE: ERROR FILTERSTART” TOMCAT ERROR MESSAGES

|Just a quick post that I hope might benefit others. If you have been developing web applications on tomcat for a while you have likely come the two error messages mentioned in the title.SEVERE: Error listenerStartOccurs when an exception is thrown in the contextInitialized method of a ServletContextListenerSEVERE: Error filterStartOccurs when an exception is thrown in … Continue reading DEBUGGING THE DREADED “SEVERE: ERROR LISTENERSTART” AND “SEVERE: ERROR FILTERSTART” TOMCAT ERROR MESSAGES

Schedule a job using Quartz

import org.apache.log4j.Logger;import org.quartz.CronTrigger;import org.quartz.Job;import org.quartz.JobDetail;import org.quartz.JobExecutionContext;import org.quartz.Scheduler;import org.quartz.impl.StdSchedulerFactory;import com.ef.monitoring.FeedUpdaterTasklet;public class FeedBackEmailScheduler implements Job { private static Logger logger = Logger.getLogger(FeedBackEmailScheduler.class); private static Scheduler scheduler; public static void start() throws Exception { scheduler = StdSchedulerFactory.getDefaultScheduler(); JobDetail jobDetail = new JobDetail("FeedBackEmailScheduler", Scheduler.DEFAULT_GROUP, FeedBackEmailScheduler.class); // Run job at each day 10.30 AM and 6.30 PM CronTrigger cTrigger = … Continue reading Schedule a job using Quartz

SEVERE: Exception sending context initialized event to listener instance of class + Null Pointer Exception

If at all you are trying to load the bean before, use like below. This is also useful when you try to get a bean in @weblistener  as well.@Overridepublic void contextInitialized(ServletContextEvent sce) { WebApplicationContextUtils .getRequiredWebApplicationContext(sce.getServletContext()) .getAutowireCapableBeanFactory() .autowireBean(this); //your code goes here}

Scheduler Job using Java8, Better than TimerJob

import java.time.Duration;import java.time.LocalDateTime;import java.time.ZoneId;import java.time.ZonedDateTime;import java.util.concurrent.Executors;import java.util.concurrent.ScheduledExecutorService;import java.util.concurrent.TimeUnit;import javax.servlet.ServletContextEvent;import javax.servlet.ServletContextListener;import javax.servlet.annotation.WebListener;import org.springframework.web.context.support.WebApplicationContextUtils;@WebListenerpublic class BackgroundJobManager implements ServletContextListener { private ScheduledExecutorService scheduler; @Override public void contextInitialized(ServletContextEvent event) { LocalDateTime localNow = LocalDateTime.now(); ZoneId currentZone = ZoneId.of("America/New_York"); ZonedDateTime zonedNow = ZonedDateTime.now(currentZone); ZonedDateTime zonedNext1030AM = zonedNow.withHour(11).withMinute(49).withSecond(0); ZonedDateTime zonedNext630PM = zonedNow.withHour(11).withMinute(50).withSecond(2); System.out.println(zonedNow); System.out.println(zonedNext1030AM); System.out.println(zonedNext630PM); System.out.println(localNow); Duration duration1030AM = Duration.between(zonedNow, zonedNext1030AM); … Continue reading Scheduler Job using Java8, Better than TimerJob