Java Courses and different tasks from other courses.
[JB] - Training plan from JetBrains-Academy.
[ZT] - Java Courses by Zaur Tregulov.
[DS] - DevStudy.net course.
[YT] - Lessons from YouTube.
[AX] - Java Courses by Alex Lee.
[SA] - Lessons by Sergey Arkhipov.
[HR] - Tasks from the website hackerrank.com.
[LC] - Tasks from the website leetcode.com.
[PK] - Tasks from the website prog.kiev.ua.
[GH] - Java Courses by GH, Java for Web.
[JM] - Java marathon with youtube channel Alishev
[EP] - Basic java course by EPAM.