Java Design Issue: Enforce method call sequence

Question

There is a question which was recently asked to me in an interview.

Problem: There is a class meant to profile the execution time of the code. The class

Answer 1

Maybe he expected this 'reconfiguration' and question was not about method sequence at all:

class StopWatch {

   public static long runWithProfiling(Runnable action) {
      startTime = now;
      action.run();
      return now - startTime;
   }
}