Java 8 reduce is a great method to compute a value from stream of values – reduce collection to value. In this post we’ll explain how reduce in Java work.
Maven use company repository (Nexus)
In this post we’ll show how to configure Maven to download project libraries from your company’s repository/mirror instead of the Internet.
Java XML validate using SchemaFactory
There are a few ways to validate XML file in Java. In this post we show how to use SchemaFactory to validate XML against XSD Schema from file.
Groovy for Java Developers – essentials
In this tutorial you will learn the most common features of Groovy that will allow you to get up and running in just a few minutes!
Bubble Sort is a sorting algorithm that repeatedly goes through an array and swaps adjacent elements that are not in order. In this post we’ll show how to implement it.
Linux head and tail are basic commands for displaying file contents. In this post we’re going to show how to do that on many examples!
Linux cut command by example
The Cut command is a great utility to select parts of lines. In this post we’ll show many example of how to use it.
MongoDB 3 Replica Set configuration consists of a few steps and can be done even on a localhost. In this post we show how to configure two node replication.
MongoDB 3 array query operations are very helpful and simplify digging in nested structures. In this post we’ll show how to create queries that match array elements in various ways.
Towers of Hanoi is a well known puzzle, very often used to teach recursion. In this post we will show how to solve this puzzle recursively.