Using enum as key for map [closed]

Question

I want to use enum as keys and a object as value. Here is the sample code snippet:

public class DistributorAuditSection implements Comparable<DistributorAuditSection>{             private Map questionComponentsMap;         public Map getQuestionComponentsMap(){            return questionComponentsMap;        }         public void setQuestionComponentsMap(Integer key, Object questionComponents){            if((questionComponentsMap == null)  || (questionComponentsMap != null && questionComponentsMap.isEmpty())){               this.questionComponentsMap = new HashMap<Integer,Object>();            }            this.questionComponentsMap.put(key,questionComponents);        } } 

It is now a normal hashmap with integer keys and and object as values. Now I want to change it to Enummap. So that I can use the enum keys. I also don't know how to retrieve the value using Enummap.

Answer 1

It the same principle as Map Just Declare enum and use it as Key to EnumMap.

public enum Color {     RED, YELLOW, GREEN }  Map<Color, String> enumMap = new EnumMap<Color, String>(Color.class); enumMap.put(Color.RED, "red"); String value = enumMap.get(Color.RED); 

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