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class Lily extends Flower{
String whatsYourName(){
return "Lily";
}
}
class Region {
Flower yourNationalFlower(){
return new Flower();
}
}
class WestBengal extends Region{
Jasmine yourNationalFlower(){
return new Jasmine();
}
}
class AndhraPradesh extends Region {
Lily yourNationalFlower(){
return new Lily();
}
}
public class Solution {
public static void main(String[] args) throws IOException {
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());
}
}
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Covariant Return Types
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import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader;
//Complete the classes below class Flower { String whatsYourName(){
}
class Jasmine extends Flower { String whatsYourName(){ return "Jasmine"; } }
class Lily extends Flower{ String whatsYourName(){ return "Lily"; } }
class Region { Flower yourNationalFlower(){ return new Flower(); } }
class WestBengal extends Region{ Jasmine yourNationalFlower(){ return new Jasmine(); } }
class AndhraPradesh extends Region { Lily yourNationalFlower(){ return new Lily(); } }
public class Solution { public static void main(String[] args) throws IOException { 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()); } }