type of inheritance in java

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();
   }
}

Posted by: Guest on September-08-2020

it is used to define relationship between two class, which a child class occurs all the properties and behaviours of a parent class. Provides code reusability. Ex: in my framework I have a TestBase class which I store all my reusable code and methods. My test execution classes and elements classes will extend the TestBase in order to reuse the code.

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