Java inheritance is used

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();
   }
}

Posted by: Guest on November-23-2020

Source

// 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(); } }

// 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(); } }

Java Inheritance (Subclass and Superclass) In Java, it is possible to inherit attributes and methods from one class to another. We group the "inheritance concept" into two categories: subclass (child) - the class that inherits from another class superclass (parent) - the class being inherited from To inherit from a class, use the extends keyword.

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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