JGym.IO was born in the COVID-19 lockdown days, when we were stuck at home with nowhere to go. What better time to do some mental gymnastics with fellow Java enthusiasts?

Dr Heinz M. Kabutz

Your instructor is Dr Heinz M. Kabutz, author of The Java Specialists’ Newsletter and founder of JCrete®. Heinz has instructed thousands of Java programmers since 1999 on tough subjects like performance, concurrency and design. Heinz was one of the first elected Java Champions (2005).