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  4. Covariant Return Types
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Covariant Return Types

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104 Discussions

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  • bhoomikachourey1
     + 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(); } }

  • suhaniisharma201
     + 0 comments

    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(); } }

  • gouravp386
     + 0 comments

    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()); } }

  • raghav22csu410
     + 0 comments

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

    //Complete the classes below 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 { 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()); } }

  • cfrdocarmo
     + 0 comments

    I am use abstract class:

    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();
}

    }