Thunk.java

/** uses the initialize-on-demand holder class idom. */
public class Thunk {

   public T get() {
      return ComputeHolder.result;
   }

  private static class ComputeHolder {
    static final T result = doCompute();
  
    static T doCompute() {
       T t= // some computation
       return t;
    }
  }


}

ps. i work for kaching :)