Today I found out, there is a super short way to return a ResponseEntity in Spring boot. Usually you want to fetch data from a repository using some kind of interface. Let’s say you use the: It provides a method to find an entity by its ID: As you can see it returns an optional… Continue reading The Shortest way to return a Response Entity in Spring Boot
Tag: Java
The Singleton Design Pattern and how to implement it in Java
The Singletone design pattern is one of many famous design pattern used in software developent.
Sometimes you need to ensure that a class in your java project only has one single instance in your whole program or application. The singleton pattern is suitable for this purpose. In this post, i will show you how to implement it and describe which value it offers you in your program.
Java 17 and NullPointerExceptions
For my first blogpost I decided to write about a new small feature in Java 17. The new NullPointerException.Actually this is not new. But the content is much more informative than usual.