Study 1Z0-829 Java 17 OOP and Inheritance: key concepts, common traps, and exam decision cues.
This is where Java design becomes dispatch and type-safety reasoning. The exam expects you to know what the declared type allows, what the runtime type does, and how nested type forms differ.
| Lesson | Focus |
|---|---|
| 3.1 Classes and Inheritance | Learn how the exam tests member rules, polymorphism, interface contracts, and nested-class behavior. |
| If the question is really about… | Go first to… |
|---|---|
| member declarations, constructors, or inheritance | 3.1 Classes and Inheritance |
| default methods, abstract types, or interfaces | 3.1 Classes and Inheritance |
| nested, local, or anonymous classes | 3.1 Classes and Inheritance |