Inheritance in Java 🚀
By Bhau Automation • Java Tutorial for Beginners
🎯 What You Will Learn
- What is inheritance in Java?
- How inheritance works in Java
- Types of inheritance
- Real Java inheritance examples
- Java interview questions on inheritance
💡 Inheritance is one of the most important OOPs concepts in Java programming.
📌 What is Inheritance in Java?
Inheritance is a mechanism in Java where one class acquires the properties and methods of another class.
Inheritance helps in:
- Code reusability
- Reducing duplicate code
- Method overriding
- Improving maintainability
🛠️ Syntax of Inheritance
class Parent {
}
class Child extends Parent {
}
⚙️ How Inheritance Works?
The child class inherits properties and methods from the parent class using the extends keyword.
💻 Java Inheritance Example
class Animal {
void sound() {
System.out.println("Animal makes sound");
}
}
class Dog extends Animal {
void bark() {
System.out.println("Dog barks");
}
}
public class InheritanceDemo {
public static void main(String[] args) {
Dog d = new Dog();
d.sound();
d.bark();
}
}
📚 Types of Inheritance in Java
- Single Inheritance
- Multilevel Inheritance
- Hierarchical Inheritance
- Hybrid Inheritance (through interfaces)
🌐 Real-World Example
A Car class can inherit properties from a Vehicle class.
- Vehicle → speed()
- Car → musicSystem()
🔥 Advantages of Inheritance
- Code reusability
- Cleaner code structure
- Supports polymorphism
- Easy maintenance
❓ Common Interview Questions
Q: Which keyword is used for inheritance in Java?
A: The extends keyword is used.
Q: Does Java support multiple inheritance using classes?
A: No, Java supports multiple inheritance through interfaces only.
🎥 Watch Complete Video Tutorial
👉 Watch Inheritance in Java Tutorial
🎓 Key Takeaways
- Inheritance promotes code reusability
- Child class inherits parent class features
- extends keyword is used in Java inheritance
- Important OOPs concept for interviews
- Foundation for advanced Java concepts
⚡ Pro Tip: Practice inheritance programs regularly to understand OOPs concepts deeply for interviews and development projects.
🚀 Created with ❤️ by Bhau Automation