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  4. Covariant Return Types
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Covariant Return Types

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109 Discussions

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  • jhoneder
     + 0 comments
    import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

//Complete the classes below
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();
    }
}


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 = switch (s) {
            case "WestBengal" -> new WestBengal();
            case "AndhraPradesh" -> new AndhraPradesh();
            default -> new Region();
        };
        Flower flower = region.yourNationalFlower();
        System.out.println(flower.whatsYourName());
    }
}

  • carnoxen
     + 0 comments

    attached image must be changed

    one flower's name is Lotus

  • harikagollapall1
     + 0 comments

    java conarient return type hacker rank solution

  • hannelevanska6
     + 0 comments

    Covariant return types make method overriding flexible, like mapping states to flowers. Saw some cool Java insights on Top Digital Marketing Agencies Uk.

  • shivaniraskar99
     + 0 comments

    class Flower {

    String whatsYourName(){
return "I have 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(); } }