Reddit clone built using Spring Boot, Spring Security with JWT Authentication, Spring Data JPA with MySQL, Spring MVC. The frontend is built using Angular - You can find the frontend source code here - https://github.com/SaiUpadhyayula/angular-reddit-clone
https://github.com/SaiUpadhyayula/spring-reddit-clone/blob/bdedc07f2ad419063f57fca9cc7827dce5efd96c/pom.xml#L67
There is no need for an "extra" JWT library, when Nimbus JWT library is already included in spring security.
https://docs.spring.io/spring-security/site/docs/current/reference/html5/#oauth2resourceserver-jwt-decoder-bean