実行時間

public class Timing {
  public static void main(String[] args) {
    long start = System.currentTimeMillis();
    try {
      Thread.sleep(3000);
    } catch (InterruptedException e) {
      e.printStackTrace();
    }
    long stop = System.currentTimeMillis();
    System.out.println("実行時間:" + (stop - start));
  }
}


>実行時間:3000