In this repo you can see all design patterns implemented in Java.
Credits
https://www.youtube.com/watch?v=MqddY6Ochkc&list=PLbIBj8vQhvm0VY5YrMrafWaQY2EnJ3j8H
https://refactoring.guru/pt-br/design-patterns/java
https://github.dev/iluwatar/java-design-patterns