FAQs on Java Programming Tutorial - 49 - Inheritance

Question 1

1. What is inheritance in Java programming?

Accepted Answer

Ans. Inheritance in Java programming is a mechanism that allows a class to inherit the properties and methods of another class. It enables code reuse and promotes the concept of hierarchical relationships between classes.

Question 2

2. How is inheritance implemented in Java?

Accepted Answer

Ans. In Java, inheritance is implemented using the 'extends' keyword. When a class extends another class, it inherits all the non-private fields and methods of the superclass. The subclass can then access and use these inherited members.

Question 3

3. Can a class inherit from multiple classes in Java?

Accepted Answer

Ans. No, Java does not support multiple inheritance, which means a class can only inherit from a single superclass. However, it can implement multiple interfaces, which provides a way to achieve multiple inheritance-like behavior.

Question 4

4. What is the difference between inheritance and composition in Java?

Accepted Answer

Ans. Inheritance and composition are two ways to establish relationships between classes in Java. Inheritance is an 'is-a' relationship, where a subclass inherits from a superclass. Composition, on the other hand, is a 'has-a' relationship, where a class contains an instance of another class as a member variable. While inheritance promotes code reuse, composition allows for more flexibility and is often preferred over inheritance.

Question 5

5. How can you prevent a class from being inherited in Java?

Accepted Answer

Ans. To prevent a class from being inherited in Java, you can declare it as 'final.' A final class cannot be subclassed. Additionally, you can also make individual methods or fields final to prevent them from being overridden or modified in the subclass.

Java Programming Tutorial - 49 - Inheritance Video Lecture - Java Programming

Java Programming Fundamentals: For Beginners

Top Courses

Best Courses

Programming & Software Development

Schools

Competitive Exams

Study Java Programming Tutorial - 49 - Inheritance on the App