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Pascal Petruch
Pascal Petruch
1,479 Points
Posted by Pascal Petruch
Pascal Petruch
1,479 Points

formal parameters don't match when defining enum

Hello everyone,

the compiler says that the formal parameters don't match. There seems to be a problem with the line 4: JCV, SONY, COBY, APPLE;

I can't figure out why. Does anybody know where I made an error?

Kind regards, Pascal

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

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

   private String displayName;

   Brand(String displayName) { 
     this.displayName = displayName;
   }

   public String getDisplayName() { 
     return displayName; 
   }
}

1 Answer

Joseph Wasden
Joseph Wasden
20,406 Points
Joseph Wasden
Joseph Wasden
20,406 Points

The problem is that your ENUMS need to take a parameter. If you look at the constructor your created, it alters the property displayName using the argument passed into the constructor. In the code below, I've passed in an argument of the lowercase spelling for each brand of radio.

see the following example.

package com.example.model;

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

   private String displayName;

   Brand(String displayName) { 
     this.displayName = displayName;
   }

   public String getDisplayName() { 
     return displayName; 
   }
}