在 Java 运行期间更新 Spring HashMap

Question

What is the best way to implement the cache to hold singleton objects that gets created dynamically during java runtime with spring DI?

I was trying to do as in my code snippet, but it does not work.

Class GenericTranslator {


    @Resource
    private Map<String, LanguageTranslator> languageTranslators;


    public String translate(String input, string language){
           LanguageTranslator lt
          if(objects.containsKey(language)){
                lt = languageTranslators.get(language);
          } else{
           //LanguageTranslator creation is costly and memory consuming
             lt = initLanguageTranslator(language);
             languageTranslators.put(keyName, newObject)
          }
        return lt.translate(input);

   }
}