But how many developers understand how HashMap works internally? A few days ago, I read a lot of the source code for java.util.HashMap (Java 7 followed by Java 8) to gain a deeper understanding of ...

This article was originally posted on my blog. You should also read my Java 11 Tutorial (including new language and API features from Java 9, 10 and 11).

Objective: The physical fitness and functional movement capabilities of university students are fundamental to their long-term health, yet traditional physical education models may have limitations in ...