Category Archives: Language basics

7 different ways how to get NumberFormatException in Java

Posted on May 5, 2022 by Andrej Buday

This article will show you the NumberFormatException, how you are getting it and what you should do to handle the exception properly. Continue reading →

Posted in Language basics | Tagged exception, Java, Java 8, NumberFormatException | Leave a comment

Flattening Stream Collections in Java

Posted on March 1, 2022 by Andrej Buday

This article is about flattening the list of element list with use of Java 8 stream feature flatMap and forEach Continue reading →

Posted in Language basics | Tagged collections, Java, Java 8 | Leave a comment

What does the double star operator mean in Python?

Posted on February 1, 2022 by Andrej Buday

In some Python code, you might spot double stars standing next to each other. What do those two stars mean, and what is their job? We will answer all the questions in this article. Continue reading →

Posted in Language basics | Tagged **kwargs, double star, double-asterisk, method arguments, power operator, Python, Python functions, two stars | Leave a comment

How to join List String elements with a comma

Posted on January 1, 2022 by Andrej Buday

In this article, we will see three different ways to print string elements of the list into one coherent text. Continue reading →

Posted in Language basics | Tagged brute force, Java 8 | Leave a comment

How to convert a Map to an Array in Java

Posted on March 12, 2021 by Andrej Buday

This tutorial is about several approaches to converting Java’s Map interface implementations into the Java array. Continue reading →

Posted in Language basics | Tagged array, Collection, conversion, HashMap, Java, LinkedHashMap, Map, TreeMap | Leave a comment

How to initialize an array with zero values in Java

Posted on March 1, 2021 by Andrej Buday

This article will look at how to fill up Java array with default values effectively on an array creation. Continue reading →

Posted in Language basics | Tagged array, performance, primitive type, reference type | Leave a comment

Bit manipulation operators in Java

Posted on December 12, 2020 by Andrej Buday

Java offers a possibility for bit manipulation with bit operators in its code. This article will go through all the operators with real-life Continue reading →