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Java Build a JavaFX Application Build a Pomodoro App Enums

Posted by Lloyd Heath
Lloyd Heath
10,993 Points

JavaFX Enum challenge 2/2

Having trouble coming up with the correct solution to this challenge. I am not sure what the error message is telling me:

./com/example/model/Brand.java:4: error: constructor Brand in enum Brand cannot be applied to given types; JVC, ^ required: Brand found: no arguments reason: actual and formal argument lists differ in length

I tried to providing arguments to the enum values (eg. SONY(Sony), COBY(Coby)...) whic generate different types of errors. I've looked at other examples in the Java documentation and Stack Overflow as well as other sites and what I am doing seems like it should work; so, I am thinking that it is something minor. If anyone could help and point me in the right direction; it would be greatly appreciative. Thanks.

com/example/model/Brand.java 
package com.example.model;

public enum Brand {
  JVC,
  SONY,
  COBY,
  APPLE;

    private Brand displayName;

    Brand(Brand Sony) {
        displayName = Sony;
    }

    public Brand getDisplayName() {
        return displayName;
    }
}

2 Answers

Emil Rais
Emil Rais
26,873 Points
Emil Rais
Emil Rais
26,873 Points 
public enum Brand {
  // This is where the different instances of the Brand enumeration are declared
  JVC,
  SONY,
  COBY,
 APPLE;

  // This is the enum constructor
  Brand(Brand Sony) {
  }
}

The enum constructor should match the declarations. Right now you pass nothing to the enums when you create them, but the constructor expects to receive a Brand. This is how you pass your information along to the enum.

public enum Brand {
  JVC("JVC"),
  SONY("Sony"),
  COBY("Coby"),
  APPLE("Apple");

  Brand(String name) {
  }
}

Notice how the string argument is passed to the enumerations and how the constructor has been changed to accept a String. I also renamed the constructor parameter to better align with what it was going to contain. The rest you seem to have all figured out. Happy coding.

Lloyd Heath
Lloyd Heath
10,993 Points
Lloyd Heath
Lloyd Heath
10,993 Points

Thank you Emil; I haven't had a chance to try it yet but you have cleared up my confusion. Thanks again.