Java Evangelist John Yeary

A quick example of using DomainValidator to validate a domain name.

One of my new colleagues is new to JSF development, and asked for some assistance in creating a JSF <h:selectOneMenu/> which had a bl...

Glass Fish I have been tasked with doing some JAX-RS coding during my day job. I wanted to update my skills for JAX-RS which is one of...

I was recently tasked with updating an embedded application that we use from Apache Tomcat 8.0.0 RC5. Yes, the project used a release candid...

I thought I would publish a simple script on how I split a dataset that looks like below into a CSV file which Excel could work on. The issu...

Secure j_security_check Response Headers Introduction I was recently tasked with resolving a security issue with Apache Tomcat. The is...

I have been looking for a good and simple "Java library to extract links (URLs, email addresses) from plain text". I was searching...

I was working on a couple of SSL based issues when I made a couple of observations. The default self-signed key generation in Java does not ...

Wikipedia  I have been working on testing a feedback loop, and wanted a simple mechanism to do the testing. I was surprised that I cou...

Introduction I was looking for an example of how to implement the java.util.logging (JUL) adapter in a project. This would almost seem to...

Introduction Hibernate validators offer a plethora of validators to make your development work much easier. Some of the common ones that a...

The title seems like a mouthful, and it is. I had some code which I used to demonstrate how to set EL values using a PhaseListener. I was go...

I was trying to come up with a way to validate hostnames and IP addresses. I didn't want to spend time trying to do it myself. I figured...

Cyndi Vasquez sent me this title a while back. I have been so bogged down that I finally got a chance to look at it. Thanks Murach... this i...

I was asking my team to go through their JSF pages, and to update the XML namespaces to use the latest namespace from the JSF 2.2 specificat...

Introduction I want to start by blaming  Markus Eisele  for my misadventures. I was looking at his blog and liked the makeover he gave it....

I was experimenting with how to invoke a @PreDestroy annotated method in a class. This will approach will work with other annotations as ...

I was asked by someone to solve a problem with threads that they were having. They wanted to cancel a Future that was sent to an ExecutorSe...

Illustration: Cathy Wilcox We had a recent security audit and a question was posed about how to check a Class without doing an instance...

I was trying to resolve some issues with building the cassandra gem on Mac OS X 10.9.5. The solution was a multipart solution. You firs...