Building Classes on Top of Other Classes¶
☕ Java 17
Movies and series share a title, a duration and a play button. Instead of writing that twice, Java lets one class build on another: inheritance. Here you'll see how extends works, what a child class really receives, and the rules that shape every class hierarchy.
In this series¶
| # | Page | Reading time |
|---|---|---|
| 1 | extends, and what a child inherits | 3 min |
| 2 | Family rules: final, one parent, Object | 3 min |
| 3 | Lab: a streaming catalog built on inheritance | 4 min |
🎓 OCP 1Z0-829 candidates: exam traps and practice questions (optional)
Prerequisites: classes, fields, methods and access modifiers (Part 1).