Enable JMX Remote in Tomcat 7
IntroductionRemote monitoring is essential in a IT infrastructure. Sadly is the standard Java JMX based on port range. Here I will show you to overcome that in Tomcat 7.InstallationDownload...
View ArticleCSRF and Character Encoding Filter in Tomcat 7
In Tomcat 7 there are several interesting filter, which are ready to be used:CsrfPreventionFilter (Cross-Site Request Forgery), for details about CSRF, see OWASP CSRF.SetCharacterEncodingFilter, for...
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Eclipse Top Download Plugins
Eclipse is maybe the most used IDE for java developers, but you also need some plugins to be even more productive. Here are the most downloaded.Subversive / Subclipse - SVN plugins! Who installs it...
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Gang of Four (GoF) Design Pattern
The old book of Gang of Four (GoF) Design Pattern by Erich Gamma, Richard Helm, Ralph Johnson and John Vlissides never get to old. And if you are not familiar with it. Read it!Here is a good site with...
View ArticleJava EE 6 Deployment Descriptors
Contexts and Dependency Injection for Java (CDI) 1.0[META-INF/beans.xml|WEB-INF/beans.xml]Java Persistence API (JPA) 2.0META-INF/persistence.xmlEnterprise JavaBeans (EJB) 3.1META-INF/ejb-jar.xmlJBoss...
View ArticleHibernate Best Practise, JPA 2.0 and Second Level Cache with Infinispan
IntroductionThe technique of using ORM has been becoming the defacto standard, when developing new application, but after passed the level of school books example, the usage of using ORM is not so...
View ArticleMaven RPM Plugins
There are two major maven rpm plugins.rpm-maven-plugin The Codehaus mojo plugin is good and holds good quality as almost all mojo plugins, but has one big disadvantage. It requires rpmbuild linux tool,...
View ArticleHow to Install Tomcat 6 on RHEL 6
A good and accurate guide exists on http://oracle-base.com/articles/linux/apache-tomcat-installation-on-linux.php
View ArticlePuppet IDE Geppetto
When writing puppet modules I would recommend using an IDE when writing puppet code. The IDE from puppetlab is the most mature - Geppetto. Geppetto is fine, but one warning when installing it.DO NOT...
View ArticleCrontab Expression
I do not write contab scheduling expression every day, so I tend to forget the expression syntax. Below is a good site for generating such expressions.http://www.crontab-generator.org/
View ArticleGood intro to AngularJS
Good intro to AngularJS, is built up with examples and short theory introduction.https://github.com/curran/screencasts/tree/gh-pages/introToAngular
View ArticleHow to Create a Bootable USB for Linux ISO
IntroductionThe most generic way to create a bootable USB with a Linux ISO file, is to use the dd command.PrerequisiteOn RHEL/CentOS/Fedora# yum install syslinuxOn Ubuntu/Debian$ sudo apt-get install...
View ArticleUse YubiKey for 2 Factor Authentication on Ubuntu 14.04
To increase the security for your Google Account you can use 2 factor authentication with SMS. But also you can use YubiKey. To get that to work on Ubuntu 14.04 follow the instruction here...
View ArticleWhy EJB?
When people think of Java EE, they think in first hand of EJB, even though the EE specification contains much than EJB. For example Rod Johnson (founder of Spring) pointed out in the Expert One-on-One...
View ArticleJUnit testing CDI and EJB with Mockito, OpenEJB and Arquillian
IntroductionUnit testing EE have previously been hard, but since EE 6 and onward the EE specification has been improved on the test front.Since EE 6 the following has been...
View ArticleUsing Hamcrest with JUnit 4
IntroductionThe latest JUnit 4 comes with a transitive dependency of hamcrest. What hamcrest brings to the table is to increase the readability of the test code. This is important because codes are...
View ArticleGetting Started with Mockito
IntroductionTo create effective unit test, they should be fast. But also you might need to mock object out to be able to write unit tests. The most common library to use for mocking is mockito.Example:...
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What is Docker and Why is it Hot?
What is Docker?It is the possible replacement for Virtualization.What is the Difference between Virtualization and Docker? Below is a good picture from https://www.docker.com/whatisdocker. So the...
View ArticleHow to Log SQL Statements, Parameters and Cache in Hibernate?
IntroductionCurrent implementation of Hibernate are:Hibernate 4.2 implements JPA 2.0 (EE 6)Hibernate 4.3+ implements JPA 2.1 (EE 7)LoggingDo not set logging level in persistence.xml...
View ArticleFast Scala Compilation with Maven and Zinc
If you need faster scala compilation, see http://hohonuuli.blogspot.se/2012/11/fast-scala-compilation-with-maven.html.
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