Java Basics

https://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-006-introduction-to-algorithms-fall-2011/lecture-videos/
https://docs.oracle.com/javase/specs/jvms/se11/html/jvms-2.html#jvms-2.5
https://habr.com/post/277669/ (RU)