HackerrankJava0043.java

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class HackerrankJava0043 {

	public static void main(String[] args) throws IOException {
		// Covariant Return Types
		// https://www.hackerrank.com/challenges/java-covariance/problem?isFullScreen=true

		BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
		String s = reader.readLine().trim();
		Region region = null;
		switch (s) {
		case "WestBengal":
			region = new WestBengal();
			break;
		case "AndhraPradesh":
			region = new AndhraPradesh();
			break;
		}
		Flower flower = region.yourNationalFlower();
		System.out.println(flower.whatsYourName());
	}

}

// -------------------------------------------------------------------------------------------------
// --- You need to add this lines for solution hackerrank provides all other lines for challange ---
// -------------------------------------------------------------------------------------------------
class Flower {
	public String whatsYourName() {
		return "I have many names and types.";
	}
}

class Jasmine extends Flower {
	@Override
	public String whatsYourName() {
		return "Jasmine";
	}
}

class Lily extends Flower {
	@Override
	public String whatsYourName() {
		return "Lily";
	}
}

class Region {
	public Flower yourNationalFlower() {
		return new Flower();
	}
}

class WestBengal extends Region {
	@Override
	public Flower yourNationalFlower() {
		return new Jasmine();
	}
}

class AndhraPradesh extends Region {
	@Override
	public Flower yourNationalFlower() {
		return new Lily();
	}
}
// -------------------------------------------------------------------------------------------------
// -------------------------------------------------------------------------------------------------
// -------------------------------------------------------------------------------------------------