https://www.8bitmen.com/java-full-stack-developer-the-complete-roadmap-part-1/

https://www.8bitmen.com/java-full-stack-developer-the-complete-roadmap-part-2/

Learn front end:

• HTML
• CSS
• Javascript
• React
• Angular
• Vue

Backend:

• Core Java
• Spring framework?

Database:

• MySQL
• MongoDB (NoSQL?)