Complete Java SE 8 Developer Bootcamp - Inheritance: Part 2

The video tutorial explains the concepts of composition and inheritance in object-oriented programming (OOP). It introduces the 'has a' rule for composition and the 'is a' rule for inheritance, using examples to illustrate these relationships. The tutorial focuses on Java's single inheritance model, highlighting the use of the 'extends' keyword to establish inheritance. It discusses the benefits of inheritance, such as code reuse, and explains the limitations of single inheritance in Java. The video also covers inheritance chains, subtypes, and the concept of parent-child relationships in class hierarchies.

What rule does composition follow in object-oriented programming?

• The 'creates a' rule

• The 'uses a' rule

• The 'is a' rule

• The 'has a' rule

In Java, which keyword is used to establish an inheritance relationship?

• implements

• inherits

• uses

• extends

What is one of the main benefits of using inheritance in Java?

• It reduces code duplication

• It allows for multiple inheritance

• It limits code reuse

• It increases code complexity

Which of the following is true about Java's inheritance model?

• Java supports multiple inheritance

• Java does not support inheritance

• Java uses interfaces to achieve multiple inheritance

• Java allows a class to extend multiple classes

What is a superclass in the context of inheritance?

• A class that implements an interface

• A class that is extended by another class

• A class that extends another class

• A class that has no subclasses

In an inheritance chain, what can a class have?

• No subtypes

• Multiple subtypes

• No supertypes

• Multiple supertypes

Which of the following is an example of a subtype in an inheritance chain?

• A class that is a standalone entity

• A class that is not part of the chain

• A class that implements an interface

• A class that extends another class