Today I came across the Kotlin Sealed Class which I had never heard of before. After some research, I found that this concept is nothing new and is also available in Scala for example. So, yet another Scala feature JetBrains considered relevant and suitable for Kotlin? I like that :) Read this post if you're interested in more Kotlin features. Actually, this is a quite simple feature, which I'm going to explain in the following. Kotlin Sealed Class - Feature Explanation A sealed class can be subclassed and may include abstract methods, which means that sealed classes are abstract implicitly, although the documentation doesn't clearly say so. To actually make a class "sealed" we have to put the sealed modifier before its name, as we can see here: sealed class MyClass Restriction The…
Java Oracle Certification - Should you consider it? I took the OCA SE 7 Programmer I Certification exam two years ago in 2015, which I passed successfully with a score of 86%. This year I will be taking the second exam of this certification path called OCP SE 7 Programmer II. In this post, I want to reflect why taking these kind of exams isn't a waste of time but can be a great advantage for you as a Java developer. Of course, being certified in whatever area will increase your chances of getting a better job because certificates represent some kind of guaranty of your skills to a company. No doubt about that. (more…)
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