java - Inserting enum values into HashMap -

i doing program in need insert enum values hashmap. can that? tried out in many ways, failed.

can please me? through program need implement hashmap containing 4 threadpools (whose names act key) corresponding have threapoolexcecutor object.

below given code :

public class mythreadpoolexcecutorpgm {     enum threadpoolname     {         dr,         pq,         event,         miscelleneous;     }     private static string threadname;     private static hashmap<string, threadpoolexecutor> threadpoolexecutorhash;      public mythreadpoolexcecutorpgm(string p_threadname) {         threadname = p_threadname;      }      public static void fillthreadpoolexecutorhash() {         int poolsize = 3;         int maxpoolsize = 3;         long keepalivetime = 10;         threadpoolexecutor tp = null;         threadpoolexecutorhash = new hashmap<string, threadpoolexecutor>();          threadpoolname poolname ;         tp = new threadpoolexecutor(poolsize, maxpoolsize, keepalivetime,                 timeunit.seconds, new arrayblockingqueue<runnable>(5));          threadpoolexecutorhash.put(poolname,tp);    //here failing implement currect put()       } 

you may want consider using enummap instead of hashmap here. enummap faster , more space-efficient hashmap when using enumerated values, seems precisely you're doing here.