java_Handson/oopspolymorphism.java at master · boomish2005/java_Handson · GitHub

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//compile time polymorphism
class Calculator
{
    int add(int a,int b)
    {
        return a+b;
    }

    double add(double a,double b)
    {
        return a+b;
    }
}

public class Main
 {
    public static void main(String[] args)
    {
        Calculator c=new Calculator();
        System.out.println(c.add(10,20));
        System.out.println(c.add(5.5,4.5));
    }
}

//runtime polymorphism
class Vehicle
{
    void start()
    {
        System.out.println("vehicle");
    }
}

class Car extends Vehicle
{
    void start()
    {
        System.out.println("car");
    }
}

class Bike extends Vehicle
{
    void start()
    {
        System.out.println("bike");
    }
}

public class Main
{
    public static void main(String[] args)
    {
        Vehicle v1=new Car();
        Vehicle v2=new Bike();
        v1.start();
        v2.start();
    }
}