Multiple inheritance in java with example programs pdf

Multiple inheritance in java with example programs pdf

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Multiple inheritance in Java refers to the ability of a class or interface to inherit properties from multiple parent classes. In Java, interfaces can have multiple inheritance, but abstract classes can only have single inheritance.

Here are some key points to note about multiple inheritance in Java:

Here is an example of implementing multiple interfaces in Java:

// Define two interfaces
interface Animal {
void eat();
}
interface Mammal {
void nurse();
}
// Define a class that implements both interfaces
class Dog implements Animal, Mammal {
public void eat() {
System.out.println("Dog is eating.");
}
public void nurse() {
System.out.println("Dog is nursing.");
}
}
public class Main {
public static void main(String[] args) {
Dog myDog = new Dog();
myDog.eat();  // Output: Dog is eating.
myDog.nurse(); // Output: Dog is nursing.
}
}

This example shows how a class can implement multiple interfaces and inherit methods from each.

For more information, you can refer to the following PDF documents:

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What is inheritance in Java with an example?

I'd be happy to explain inheritance in Java with an example.

Inheritance is a fundamental concept in object-oriented programming (OOP) that allows one class to inherit the properties and behavior of another class. The inheriting class, also known as the subclass or derived class, inherits all the fields and methods of the parent class, which is also known as the superclass or base class. This allows for code reuse and facilitates the creation of a hierarchy of classes.

Here's an example to illustrate this concept:

// Animal class (superclass)
public class Animal {
protected String name;
public Animal(String name) {
this.name = name;
}
public void eat() {
System.out.println(name + " is eating.");
}
}
// Dog class (subclass)
public class Dog extends Animal {
public Dog(String name) {
super(name);
}
@Override
public void eat() {
System.out.println("Woof! I'm eating!");
}
}

In this example, the Animal class is the superclass, and the Dog class is the subclass. The Dog class extends the Animal class using the extends keyword.

The Dog class inherits all the fields and methods of the Animal class, including the constructor, the name field, and the eat() method. However, the Dog class also overrides the eat() method to provide its own implementation specific to dogs (i.e., "Woof! I'm eating!").

To demonstrate inheritance in action, we can create instances of the Animal and Dog classes:

public class Main {
public static void main(String[] args) {
Animal animal = new Animal("Generic Animal");
animal.eat(); // Output: Generic Animal is eating.
Dog dog = new Dog("Fido");
dog.eat(); // Output: Woof! I'm eating!
}
}

In the Main class, we create an instance of the Animal class and call its eat() method. The output is "Generic Animal is eating.", which shows that the animal object is indeed an instance of the Animal class.

We then create an instance of the Dog class (with name "Fido") and call its eat() method. The output is "Woof! I'm eating!", which demonstrates that the dog object is a specialization of the Animal class, with its own implementation of the eat() method.

This example illustrates the power of inheritance in Java: by creating a hierarchy of classes, we can reuse code and create more specific implementations that inherit the common properties and behavior from their parent classes.