Final classes in Java,There have been some discussions about the final keyword applied to classes in Java. To put it simple: when a class is declared final, you can't create a sub ...

Why it is not possible to extend a final class in Java?, 原文链接：Why it is not possible to extend a final class in Java?

The joy of streams,Recently, I have written a class that looked roughly like this: public class Requirement { ... public Requirement(...) { ... } public When getWhen() { ... } publ...

Don't Drink Too Much Reactive Cool Aid,Cross-posting of my blog article. In the last years, the idea of 'reactive server applications' was being promoted heavily, especially by new...

Couple of words about development of a new static analyzer for Java code, PVS-Studio static analyzer team, which until recently was searching for bugs and potential vulnerabilities...

Customize parsing and formatting of dates in Java 8,In Germany, dates have the format dayOfMonth.month.year. So the day of writing this article is: 17.06.2018 How do you deal with ...

Password encoder in Spring Boot 2,Hi, Since Spring boot 2.x there was a few changes in Spring Security, so, I will show you how to encode passwords in Spring boot 2 (which comes wi...

Kotlin - Is it time to switch from Java?,Kotlin is now official part of the Android development. But I am trying to find out if existing Android app should move to kotlin now. I am...

Using our continuous integration tool to continuously integrate our continuous integration tool,During the development of our feature flagging tool Bullet Train, we got to the poin...

What is `map` in a Java Stream,Originally published at www.gunnargissel.com Mapping is how to convert one type of object to another with a stream. Say you have a set of Fruit and y...

Bullet Train: Using feature flags and remote config in CI,Asking a lot of my developer friends, it seems like CI and CD are two practices that people either already employ or wish ...

Filter Null Values from a List with Java8 Lambda,A common task with Java streams is to clean up the input data so later steps can work without thinking too hard. Likely the #1 most...