what is polymorphism in java Code Example

polymorphism in java

java by Obedient Ocelot on Jan 05 2021 Donate

2

POLYMORPHISM: It is an ability of object to behave in multiple
form. The most common use of polymorphism is Java, when a
parent class reference type of variable is used to refer to a child
class object.
In my framework
  E.g.: WebDriver driver = new ChromeDriver();
We use method overloading and overriding to achieve
Polymorphism.

There are two types of achieving Polymorphism
Upcasting & Downcasting
Upcasting is casting a subtype to a supertype, 
going up in the inheritance tree.
It is done implicitly
 in order to use method available on any
 interface/class, the object should be of
 same class or of class implementing the interface.  
   WebDriver driver = new ChromeDriver();
or
	TakeScreenShot ts = new ChromeDriver();
    
    Downcasting is casting to a subtype, 
going down in the inheritance tree.
It is done to access sub class features.
It has to be done manually

ChromeDriver driver = (ChromeDriver)Webdriver;

java polymorphism

java by MitroGr on May 20 2020 Donate

2

class Animal {
  public void animalSound() {
    System.out.println("The animal makes a sound");
  }
}

class Pig extends Animal {
  public void animalSound() {//override superclass method
    System.out.println("The pig says: wee wee");
  }
}

class Dog extends Animal {
  public void animalSound() {//override superclass method
    System.out.println("The dog says: bow wow");
  }
}

class Main {
  public static void main(String[] args) {
    //You can add all objects inherited from Animal to an Animal type list
    Animal[] animals = new Animal[3]; //Creating the Animal List
    animals[0] = new Animal(); //Add a new animal object to the list
    animals[1] = new Dog(); //Add a new dog object to the list
    animals[2] = new Pig(); //Add a pig object to the list
    for (Animal a: animals){
      a.animalSound(); //This statement prints the correct string no matter the class
    }
  }
}

polymorphism in java

java by Nutty Newt on Oct 23 2020 Donate

1

// Polymorphism in java example
class Shapes
{
   public void sides()
   {
      System.out.println("sides() method.");
   }
}
class Square extends Shapes
{
   public void sides()
   {
      System.out.println("square has four sides.");
   }
}
class Triangle extends Shapes
{
   public void sides()
   {
      System.out.println("triangle has three sides.");
   }
}
class PolymorphismExample
{
   public static void main(String[] args)
   {
      Shapes shape = new Shapes();
      Shapes square = new Square();
      Shapes triangle = new Triangle();
      shape.sides();
      square.sides();
      triangle.sides();
   }
}

Source: www.flowerbrackets.com

polymorphism in java

java by Santino

on Feb 23 2021 Donate

0

Polymorphism in Java is a concept by which we can perform a single action in different ways. Polymorphism is derived from 2 Greek words: poly and morphs. The word "poly" means many and "morphs" means forms. So polymorphism means many forms.

There are two types of polymorphism in Java: compile-time polymorphism and runtime polymorphism. We can perform polymorphism in java by method overloading and method overriding.

If you overload a static method in Java, it is the example of compile time polymorphism. Here, we will focus on runtime polymorphism in java.

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