Do you want to know how to develop your skillset to become a Java Rockstar?

Subscribe to our newsletter to start Rocking right now!

To get you started we give you our best selling eBooks for FREE!

1. JPA Mini Book

2. JVM Troubleshooting Guide

3. JUnit Tutorial for Unit Testing

4. Java Annotations Tutorial

5. Java Interview Questions

and many more ....

 

Validating Class/Package Dependencies with Classycle

java-logo

Classycle is a very nice analyzer and dependency checker for class and package dependencies. It lets you define package groups (components, layers) and express unwanted dependencies such as cycles, or dependencies between particular packages. For example you can specify that you want no package cycles and no dependencies from com.foo.domain.* on com.foo.api.*. All using a very human-friendly, concise format. Then ...

Read More »

The Precious Feature Design Meetings

software-development-2-logo

As we know, meetings is where work goes to die. Discussion about the point of meetings aside, there is one type of meetings that I love. It has many names, depending on who you ask – design review, design overview, feature design. And I see it as the most important meeting in software engineering. What is it? Let’s start with ...

Read More »

BDD is – BDD is not

software-development-2-logo

“I’m the smartest man in Athens because I know that I know nothing.” —Socrates 470-399 BC What BDD is (for me) 1. Conversations BDD is about conversations The conversations help us understand what we are trying to build and identify the behaviours of our application The conversations help us share the knowledge about what we are building Through the conversations we deliberately discover the behaviour ...

Read More »

Break Single Responsibility Principle

software-development-2-logo

Single Responsibility Principle (SRP) is not absolute. It exists to help the code maintainability and readability. But from time to time you may see solutions, patterns that break the SRP and are kind of OK. This is also true for other principles, but this time I would like to talk about SRP. Singleton breaks SRP The oldest and simplest pattern ...

Read More »

Beginner’s Guide to Hazelcast Part 7

hazelcast-logo

This is a continuation of a series explaining how to use Hazelcast.  If one has not read the other six posts, please go to the Table Of Contents and read the other posts. A Different Breed of Map Hazelcast’s MultiMap breaks the normal mold of using java.util.Collection interfaces that have been used in former posts.  In fact, the concept of ...

Read More »

Grails Goodness: Adding Health Check Indicators

grails-logo

With Grails 3 we also get Spring Boot Actuator. We can use Spring Boot Actuator to add some production-ready features for monitoring and managing our Grails application. One of the features is the addition of some endpoints with information about our application. By default we already have a /health endpoint when we start a Grails (3+) application. It gives back ...

Read More »

Pitfalls of Cucumber adoption

software-development-2-logo

It seems like behavior-driven development (or BDD) and its supporting tools are gaining stronger momentum in Java world than ever. Cucumber, as one of the most popular frameworks used to support and automate BDD, seems like the go-to framework to power user acceptance tests (or UATs) without considering the implications of adoption of such a tool. Since using Cucumber was ...

Read More »

Grails Goodness: Log Startup Info

grails-logo

We can let Grails log some extra information when the application starts. Like the process ID (PID) of the application and on which machine the application starts. And the time needed to start the application. The GrailsApp class has a property logStartupInfo which is true by default. If the property is true than some extra lines are logged at INFO ...

Read More »

Integration Testing JBoss Fuse 6.x With Pax Exam, Part I

java-logo

JBoss Fuse is a powerful distributed integration platform with built in features for centralized configuration management, service discovery, versioning, API gateway, load balancing, failover, etc for your integration-focused microservice deployments. JBoss Fuse 6.x is built on top of the Fabric8 1.x opensource project. This blog is the first part in a two-part series on integration testing when building integration microservices ...

Read More »

Do Not Think That One Second is Fast for Query Execution

software-development-2-logo

I keep encountering situations where RDBMS users think that one second for query execution is anything near fast. Most recently, in this Stack Overflow question: Hibernate SQL In clause making CPU usage to 100% The poster’s original question was why a similar query executes in one second when executed in SQL Server Management Studio whereas the (seemingly) same query executes ...

Read More »
Want to take your Java Skills to the next level?
Grab our programming books for FREE!
  • Save time by leveraging our field-tested solutions to common problems.
  • The books cover a wide range of topics, from JPA and JUnit, to JMeter and Android.
  • Each book comes as a standalone guide (with source code provided), so that you use it as reference.
Last Step ...

Where should we send the free eBooks?

Good Work!
To download the books, please verify your email address by following the instructions found on the email we just sent you.