We're halfway through 2016 and gender gap in the tech field remains to be an issue. But how much has improved? Realistically, we're a long way from achieving equality but that doesn't mean solutions do not exist.
In this tutorial we will discuss about the introduction to Apache Flink, What is Flink, Why and where to use Flink. This Flink tutorial will answer the question why Apache Flink is called 4G of Big Data? The tutorial also briefs about Flink APIs and features.
Lambda expressions are the most popular feature of Java 8. They introduce functional programming concepts to Java, which is a completely object-oriented and imperative programming language. How functional programming languages work is beyond the scope of this article, but we will extract a feature that will make the difference obvious for us who work with OOP.
How functional programming languages work is beyond the scope of this article, but we will extract a feature that will make the difference obvious to us who work with OOP.
We’re proud to be supporting the State of the Developer Nation Survey run by our friends at VisionMobile! This is the 12th developer survey, focusing on a 360 view of developer tools, skills and salaries.
The survey features questions on topics like programming languages, platforms, app categories, new technologies, revenue models, IoT verticals - and of course - tools. It’s a survey made by developers, so the questions will be relevant plus you will get to learn something new - and it only takes 15 minutes!
Today's tip is to avoid inheritance. For good reasons, there can only be one super class for any given Java class. Furthermore, exposing abstract or base classes in your API that are supposed to be inherited by client code is a very big and problematic API commitment. Avoid API inheritance altogether, and instead consider providing static interface methods that take one or several lambda parameters and apply those given lambdas to a default internal API implementation class.
This also creates a much clearer separation of concerns. For example, instead of inheriting from a public API class AbstractReader and overriding abstract void handleError(IOException ioe), it is better to expose a static method or a builder in the Reader interface that takes a Consumer<IOException> and applies it to an internal generic ReaderImpl.
Java continues to evolve despite having been around for 20 years. If you're looking for the bleeding edge, Java might not be your best bet. However, if you're an existing Java developer, no need to worry about your marketability.