Measuring elapsed time using Spring StopWatch

measuring elapsed time using Spring StopWatch

package Core;

import org.springframework.util.StopWatch;

public class ExecutionTimeStopWatch {
 void method() throws InterruptedException
 {
  System.out.println("Execution Start");
  Thread.sleep(2000);
  int b = 12+7*88/9;
  System.out.println("Execution End "+ b);
 }
 
 public static void main(String[] args) {
  try {
   StopWatch watch = new StopWatch();
   
   ExecutionTime obj = new ExecutionTime();
   watch.start();
   obj.method();
   watch.stop();
   System.out.println("Time Taken: "+ watch.getTotalTimeMillis());
  } catch (InterruptedException e) {
   e.printStackTrace();
  }
 }
}