Skip to content
Free public beta until December 4, 2026: every course is open, no card needed. After that, the first chapter of each course stays free and full access is a one-time $39 ($19 for up to 100 founding members chosen for helpful feedback). Your progress is kept. How the beta works

hiding

A subclass static method (or field) with the same name as the superclass's; the declared type picks which.

Static methods and fields are not overridden; a same-signature static in a subclass hides the superclass's, and the binding uses the declared type.

Read the full section →