Answers for "types of inheritance in java"

Inheritance in java

// Hierarchical inheritance in java
class Animal
{
   void eating()
   {
      System.out.println("animal eating");
   }
}
class Lion extends Animal
{
   void roar()
   {
      System.out.println("lion roaring");
   }
}
public class Dog extends Animal
{
   void bark()
   {
      System.out.println("dog barking");
   }
   public static void main(String[] args)
   {
      Animal obj1 = new Animal();
      obj1.eating();
      Lion obj2 = new Lion();
      obj2.eating();
      obj2.roar();
      Dog obj3 = new Dog();
      obj3.eating();
      obj3.bark();
   }
}

Inheritance in java

// single inheritance example
import java.util.*;
class Animal
{
   void eat()
   {
      System.out.println("Animal is eating.");
   }
}
class Lion extends Animal
{
   void roar()
   {
      System.out.println("lion is roaring.");
   }
   public static void main(String[] args)
   {
      Lion obj = new Lion();
      obj.eat();
      obj.roar();
   }
}

Inheritance in java

// Multiple inheritance in java
interface M
{
   public void helloWorld();
}
interface N
{
   public void helloWorld();
}
// implementing interfaces
public class MultipleInheritanceExample implements M, N
{
   public void helloWorld()
   {
      System.out.println("helloWorld() method");
   }
   public static void main(String[] args) 
   {
      MultipleInheritanceExample obj = new MultipleInheritanceExample();
      obj.helloWorld();
   }
}

Inheritance in java

// Multilevel inheritance in java
class Animal
{
   void eating()
   {
      System.out.println("animal eating");
   }
}
class Lion extends Animal
{
   void roar()
   {
      System.out.println("lion roaring");
   }
}
public class Cub extends Lion
{
   void born()
   {
      System.out.println("cub drinking milk");
   }
   public static void main(String[] args)
   {
      Animal obj1 = new Animal();
      obj1.eating();
      Lion obj2 = new Lion();
      obj2.eating();
      obj2.roar();
      Cub obj3 = new Cub();
      obj3.eating();
      obj3.roar();
      obj3.born();
   }
}

java program to demonstrate multilevel inheritance

Class X
{
   public void methodX()
   {
     System.out.println("Class X method");
   }
}
Class Y extends X
{
public void methodY()
{
System.out.println("class Y method");
}
}
Class Z extends Y
{
   public void methodZ()
   {
     System.out.println("class Z method");
   }
   public static void main(String args[])
   {
     Z obj = new Z();
     obj.methodX(); //calling grand parent class method
     obj.methodY(); //calling parent class method
     obj.methodZ(); //calling local method
  }
}

multilevel inheritance in java

class Car{
   public Car()
   {
	System.out.println("Class Car");
   }
   public void vehicleType()
   {
	System.out.println("Vehicle Type: Car");
   }
}
class Maruti extends Car{
   public Maruti()
   {
	System.out.println("Class Maruti");
   }
   public void brand()
   {
	System.out.println("Brand: Maruti");
   }
   public void speed()
   {
	System.out.println("Max: 90Kmph");
   }
}
class Maruti800 extends Maruti{

   public Maruti800()
   {
	System.out.println("Maruti Model: 800");
   }
   public void speed()
   {
	System.out.println("Max: 80Kmph");
   }
   public static void main(String args[])
   {
	 Maruti800 obj=new Maruti800();
	 obj.vehicleType();
	 obj.brand();
	 obj.speed();
   }
}