java - String to String mapping using Spring? -

from external system receive string representation of abbreviations , have make transformation(conversion) string example:

"o" -> open "c" -> closed "e" -> exit 

for object object conversion using spring custom converter

import org.springframework.core.convert.converter.converter; public class converter<source, target> implements converter<source, target>  public final target convert(@nonnull source source) {  ...  } 

but can't create string string converter. not want use external mapping library spring capabilities. can't this. simplest thing can switch

string input = "o"; string result = null; switch(input){  case "o": result ="open"  break; case "c": result ="close"  break; .... 

in matter of fact have on 100 mapings. can spring offer better solution?

when don't have logic execute in switch-case, can use static hashmap<string,string>

  static hashmap<string,string> map = new hashmap<>();   static   {       map.put("o","open");       map.put("c","close");       .....................    } 

instead of switch-case use

     map.get(input); 

if suing java 8, can use

    map.getordefault(input,"");