java - Accessing enum arguments outside of constructor? -

i'm having trouble trying fill static map values arguments of enum. example of i'm trying here:

public enum lettersandnumbers {      a(1, 2),      b(2, 3);       private static hashmap<integer, integer> numbers = new hashmap<integer, integer();       private lettersandnumbers(int numberone, int numbertwo) {}        // somehow put arguments "numberone" , "numbertwo" map       public static integer getnumbertwo(int numberone) {           return numbers.get(numberone);      } } 

is there way access these variables in static block, or elsewhere outside of constructor? have been looking around while now, find nothing on it.

thanks in advance.

you need store numberone , numbertwo in enum fields. can use static initialization block iterate values() , store them in map. like,

public enum lettersandnumbers {     a(1, 2), b(2, 3);     private int numberone;     private int numbertwo;     private static map<integer, integer> numbers = new hashmap<>();     static {         (lettersandnumbers lan : lettersandnumbers.values()) {             numbers.put(lan.numberone, lan.numbertwo);         }     }      private lettersandnumbers(int numberone, int numbertwo) {         this.numberone = numberone;         this.numbertwo = numbertwo;     }      public static integer getnumbertwo(int numberone) {         return numbers.get(numberone);     } }