Chapter 3.5 - Abstract Classes

Chapter 3.5 - Abstract Classes

• 3.5.1 What Does an Abstract Class Mean? [2 minutes]
• 3.5.2 Abstract Classes [11 minutes]
• 3.5.3 Adding an Interface to Your Project [10 minutes]
• 3.5.4 Abstract Properties [1 minute]
• 3.5.5 Define and Use Abstract Methods [10 minutes]
• 3.5.6 How to use ToString() [8 minutes]
• 3.5.7 How to Downcast an Object [1 minute]
• 3.5.8 Why You Cannot Instantiate an Abstract Class (Last Updated: 7/20/2026)
• 3.5.9 Abstract Classes vs Interfaces (Last Updated: 7/20/2026)
• 3.5.10 Template Method Pattern (Last Updated: 7/20/2026)