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- Covariant Return Types
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Covariant Return Types
Covariant Return Types
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class Flower {
} }
class Jasmine extends Flower{ String whatsYourName(){ return "Jasmine"; } }
class Lily extends Flower{ String whatsYourName(){ return "Lily"; } }
class Region { public Flower yourNationalFlower(){ return new Flower(); } }
class WestBengal extends Region{ public Jasmine yourNationalFlower(){ return new Jasmine(); } }
class AndhraPradesh extends Region{ public Lily yourNationalFlower(){ return new Lily(); } }
class Flower {
}
class Jasmine extends Flower{ String whatsYourName(){ return "Jasmine"; } }
class Lily extends Flower{ String whatsYourName(){ return "Lily"; } }
class Region { public Flower yourNationalFlower(){ return new Flower(); } }
class WestBengal extends Region{ public Jasmine yourNationalFlower(){ return new Jasmine(); } }
class AndhraPradesh extends Region{ public Lily yourNationalFlower(){ return new Lily(); } }
class Flower { String whatsYourName(){ return "I hava many names and types"; } }
class Jasmine extends Flower{ String whatsYourName(){ return "Jasmine"; } }
class Lily extends Flower{ String whatsYourName(){ return "Lily"; } }
class Region { public Flower yourNationalFlower(){ return new Flower(); } }
class WestBengal extends Region{ public Jasmine yourNationalFlower(){ return new Jasmine(); } }
class AndhraPradesh extends Region{ public Lily yourNationalFlower(){ return new Lily(); } }
import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader;
//Complete the classes below abstract class Flower { public abstract String whatsYourName();
}
class Jasmine extends Flower { @Override public String whatsYourName(){ return "Jasmine"; } }
class Lily extends Flower{ @Override public String whatsYourName(){ return "Lily"; } }
abstract class Region { public abstract Flower yourNationalFlower(); }
class WestBengal extends Region{ @Override public Jasmine yourNationalFlower(){ return new Jasmine(); } }
class AndhraPradesh extends Region { @Override public 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()); } }
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()); } }