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
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.