Java 8 : Functional VS Traditional

The business logic is the same : Given a String expression composed of visits / time like : “1/24h,1..3/3h,5/*” Then…

Read More »

Java yield-like using Stream API

Several programming languages, such as Ruby or Python to name a few, provides the yield command. Yield provides an effective…

Read More »

Oracle’s Latest Java 8 Update Broke Your Tools — How Did it Happen?

If you’ve been keeping up with the news in the Java world lately, you’ve probably heard that the latest Java…

Read More »

Default Methods: Java 8’s Unsung Heros

A few weeks ago I wrote a blog saying that developers learn new languages because they’re cool. I still stand…

Read More »

Testing code for excessively large inputs

When writing unit tests we mostly focus on business correctness. We do our best to exercise happy path and all…

Read More »

The lepidopterist’s curse: Playing with java.time

Pop quiz: What will be the output of this little program?                  …

Read More »

Spring 4.1 and Java 8: java.util.Optional

As of Spring 4.1 Java 8’s java.util.Optional, a container object which may or may not contain a non-null value, is…

Read More »

Clean JUnit Throwable-Tests with Java 8 Lambdas

Recently I was involved in a short online discussion on twitter and google+ which concerned the question why the arrival…

Read More »

Grouping, sampling and batching – custom collectors in Java 8

Continuing first article, this time we will write some more useful custom collectors: for grouping by given criteria, sampling input, batching…

Read More »