LESS TALK, MORE CODE: July 2016

Tuesday

Critical error during deployment: : com.sun.faces.config.ConfigurationException: Factory 'javax.faces.render.RenderKitFactory' was not configured properly

BUG:
I was trying to deploy a JSF (RichFaces) application in JBOSS 7.1.0 and I got following error:

Critical error during deployment: : com.sun.faces.config.ConfigurationException: Factory 'javax.faces.render.RenderKitFactory' was not configured properly

FIX:
Add following parameters to the web.xml:

<listener-class>com.sun.faces.config.ConfigureListener</listener-class>

</listener>

Sunday

Quartz 2 Scheduler example

Quartz helps to schedule a job to run at a specific time.

Download quartz-2.1.5.jar from this location and add to buildpath of your project.
For maven Project:

<dependencies>
 <dependency>
  <groupId>org.quartz-scheduler</groupId>
  <artifactId>quartz</artifactId>
  <version>2.1.5</version>
 </dependency>
</dependencies>

File > New > Other > Dynamic Web Project

Copy quartz.2.1.5.jar under WEB-INF/lib

File > New > Class

package code.more.talk.less;

import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;

public class QuartzJOB implements Job{

   public void execute(JobExecutionContext context)throws JobExecutionException
{
          System.out.println("Hello Quartz!");
}
}

File > New > Folder >> resources

Right click > properties > Java Build Path > Source

Right click on resources folder > New > Other > Properties File

Content of quartz.properties file:

org.quartz.scheduler.instanceName = QuartzJOB
org.quartz.threadPool.threadCount = 3

org.quartz.plugin.jobInitializer.class =org.quartz.plugins.xml.XMLSchedulingDataProcessorPlugin
org.quartz.plugin.jobInitializer.fileNames = quartz.xml
org.quartz.plugin.jobInitializer.failOnFileNotFound = true

Right click on resources folder > New > Other > Xml file

Content of quartz.xml file:

<?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">

<job>

<name>QuartzJOB</name>

<job-class>code.more.talk.less.QuartzJOB</job-class>

</job>

<cron>

<name>QuartzTrigger</name>

<job-name>QuartzJOB</job-name>

<cron-expression>0/5 * * * * ?</cron-expression>

</cron>

</trigger>

</schedule>

</job-scheduling-data>

Add below code to the web.xml:

<context-param>

<param-name>quartz:config-file</param-name>

<param-value>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>true</param-value>

</context-param>

<context-param>

<param-name>quartz:start-on-load</param-name>

<param-value>true</param-value>

</context-param>

<listener-class>

org.quartz.ee.servlet.QuartzInitializerListener

</listener-class>

</listener>

Start application server and see the result:

Wednesday

Writing and running JUnit tests in Eclipse

1. File > New > Project > Java Project

2. File > New > Class

package code.more.talk.less;

public class Calculation {

public int sum (int a, int b) {

return a + b;

}

File > New > Other > JUnit Test Case

CalculationTest class:

package code.more.talk.less;

import org.junit.After;

import org.junit.Assert;

import org.junit.Before;

import org.junit.Test;

public class CalculationTest {

@Before

public void setUp() throws Exception {

System.out.println("Calling Calculation Test");

}

@After

public void tearDown() throws Exception {

System.out.println("Finished Calculation Test");

}

@Test

public void test() {

int result = new Calculation().sum(1, 2);

Assert.assertEquals(3, result);

}

Change test method expected value and run test again. See the testFailure.

@Test

public void test() {

int result = new Calculation().sum(1, 2);

Assert.assertEquals(4, result);

}

File > New > Other > JUnit Test Suite

Add a new method in CalculationTest class:

@Test

public void test2() {

int result = new Calculation().sum(1, 2);

Assert.assertEquals(3, result);

}

> Run AllTests class. You'll see two reults for test(failure) and test2(successful ) methods.

To ignore a test just add an @Ignore: You can add it before or after @Test.
In test suite you can run more then one class. @SuiteClasses({ class1.class , Class2.class })
You can add timeout for the test method. Example:

@Test(timeout=1)

public void test2() {

int result = new Calculation().sum(1, 2);

try {

Thread.sleep(1000);

} catch (InterruptedException e) {

e.printStackTrace();

}

Assert.assertEquals(3, result);

}

Sunday

Install JBoss Application Server 7.1 in Eclipse Kepler

Download Eclipse Kepler from this location. http://www.eclipse.org/downloads/packages/eclipse-ide-java-ee-developers/keplerr
Open Eclipse. Help > Install New Software > Write the following urls according to eclipse version to the “Work With” area.

(Helios): http://download.jboss.org/jbosstools/updates/stable/helios/
(Indigo): http://download.jboss.org/jbosstools/updates/stable/indigo/
(Juno): http://download.jboss.org/jbosstools/updates/stable/juno/
(Kepler): http://download.jboss.org/jbosstools/updates/stable/kepler/