Learned Java in my college only in the 6th semester and since then never stop learning it.
Also completed a few online courses on Youtube and a few Udemy courses.
Course certificates listed below.
https://www.udemy.com/certificate/UC-e522feaf-2fb6-4498-bbba-54cf4758e744/
https://www.udemy.com/certificate/UC-6abe4965-8022-4a52-b248-f8f2c25dd23c/