What java library is used most in the industry and that is also available on github?

Question

I want to hone my java skills (still bloody beginner). I thought of besides doing small projects, I could work on an open source project in java on github.
does anyone know a java library that is used most in the industry and that is also available on github?

Answer 1

Spring and Struct 2 are most popular framework for Java projects but I would suggest you to first practice on core java skills and then start on Servlets and JSP. These are basic concepts in order to understand these framework.

Answer 2

thanks. will take it into consideration. :)