Recently I’ve rediscovered Class.cast(object) that can be used to cast objects to a type. In Java 8 streams the method allows to do a nice Java casting trick.
Java 8 flatMap practical example
In this post we’ll show a practical example of processing tree-like structure using streams and Java 8 flatMap.
Create Java Streams
There are many ways to create Java Streams and for each of them we’ll show examples. This flexibility is needed especially when combined with flatMap!
Java 8 Comparators with Method References
Java 8 Comparators with Method References in action. We mix Java 8 static and default methods with method references to sort objects by multiple fields using chained Comparators!
Java 8 Functional Interfaces
Java 8 Functional Interfaces is very important concept, because they are heavily used with Lambda Expressions and Streams to simplify code. Let’s take a deep dive!
Java 8 interfaces default and static methods
In Java 8 interfaces default and static methods are major changes that allow to extend existing code without breaking anything. It should be the first step into Java 8.
Generate random numbers concurrently – ThreadLocalRandom
Until Java 7 there was no simple and effective way to generate random numbers concurrently. Here we show ThreadLocalRandom to generate random numbers in a thread-safe way.
Java 8 regex match group – named capturing groups
Java 8 regular expressions have been improved with names for capturing groups. In this post we show how to used them to improve Java code maintainability!
Java 8 remove selected item from Collection
In Java 8 remove selected item from Collection? It can be done in at least two ways both of which we are going to implement here. Let’s code!
Java ThreadLocal – thread data separation
One way to prevent concurrent modifications from different Threads is to given them their own local data. Java ThreadLocal allows to do thread data separation.
