O&B Insights: #java

September 13, 2016 - Learn the common pitfalls/mistakes encountered that caused some problems in Java-based systems that use JPA. From my experience, both in helping teams and conducting training,...

September 13, 2016 - Learn how transactions work in plain-vanilla JDBC and how Spring manages JDBC-based transactions. I’ve been meaning to write about this for quite some time now....

October 5, 2015 - Lorenzo simplifies BLOB handling. Read on to find out how. Whenever I search the web for storing and retrieving BLOBs to and from a database,...

September 30, 2014 - Lorenzo continues the discussion on DDD, this time with a focus on persistence of value objects. One of my colleagues asked an interesting question about my...

September 14, 2014 - Lorenzo discusses DDD using a cargo shipping scenario. I’ve always found the cargo shipping example used in Eric Evan’s book to be quite useful in learning DDD. Here are some...

July 14, 2014 - It’s common to see a java.util.List being used for a to-many mapping (with ORM). And it’s also common to need to get an element in that list using some...

July 1, 2014 - I’ve been conducting training classes (with Orange and Bronze) that cover topics like TDD, design patterns (GoF), patterns of enterprise application architecture (based on PoEAA book...

February 22, 2014 - Let’s talk about how we improved code readability and gained domain knowledge in creating ISO 8583 messages in jPOS. At first, we were writing code like this. And...

February 10, 2014 - I just realized that TDD is a great way to pick up where you left off when you have distractions. There’s a lot of articles...

August 13, 2013 - Ria shows us why you should wrap a list inside a list implementation if you’re planning to modify it. I was trying to get the...