Question

There are two kinds of interface polymorphism. Explain each with the use of Java snippets to show polymorphic behavior. (Your code doesn't have to implement any algorithmic logic, just the essential set up needed to support your explanation.)

Answer 1

Static polymorphism

public class StaticPolymorphism {
        public static int sum(int a,int b) {
                return a+b;
        }
        public static int sum(int a,int b,int c) {
                return a+b+c;
        }
        public static void main(String[] args) {
                System.out.println(sum(10,20));
                System.out.println(sum(10,20,25));
                
        }
}

Dynamic polymorphism

interface Shape{
   double area();
}
class Circle implements Shape{
   private double radius;

   public Circle(double aRadius) {
       super();
       radius = aRadius;
   }

   @Override
   public double area() {
       return Math.PI * radius * radius;
   }
  
}
public class DynamicPolymorphism {
   public static void main(String[] args) {
       Shape s = new Circle(10);
       System.out.println(s.area());
   }
}

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