Chapter 4: Java Interfaces

Defining contracts with interfaces: declaration, implementation, interface inheritance, and how interfaces relate to abstract classes.

7 Topics

• 4.1 Purpose of Interfaces
• 4.2 When to use them
• 4.3 Interface Declaration
• 4.4 Implementing an Interface
• 4.5 Interface Inheritance
• 4.6 Interfaces and Abstract Classes
• 4.7 Code Examples & Exercises