We all know that bug. A method looks safe. It returns null once in the wrong path. And the NullPointerException shows up far away from the real cause 😅 Spring Boot 4 does not magically add native ...

Community driven content discussing all aspects of software development from DevOps to design patterns. The Java ternary operator provides an abbreviated syntax to evaluate a true or false condition, ...

For those who are just looking for the commands to run to install Docker and docker compose on Ubuntu, here they are all listed together. We will go into more detail on how these commands work and ...

Err, sorry. Please try again. Null is the term used in computer systems the world over to indicate “no value.” That’s not the same as the number zero, mind you. It’s more like telling the computer ...

At first glance, the conditions arr == null and arr.length == 0 might seem similar. However, they serve entirely different purposes. Let’s dive into the difference between a null array and an empty ...

Shay loves learning new things through personal projects. Outside coding, Shay also loves gaming and playing the piano. A dictionary is a data structure that you can use to store data in your ...

Kotlin offers big advantages over Java for JVM and Android development, and plays nicely with Java in the same projects. Kotlin is a general purpose, free, open source, statically typed “pragmatic” ...

This repository contains *.eea files and example projects how to use this. If you like/use this project, a Star / Watch / Follow on GitHub is appreciated. The project also uses the ...

String key = "YourKey"; String salt = "YourSalt"; byte[] iv = new byte[16]; Encryption encryption = Encryption.getDefault(key, salt, iv); Encryption encryption = new ...

It doesn’t take much Java development experience to learn firsthand what the NullPointerException is about. In fact, one person has highlighted dealing with this as the number one mistake Java ...