java 获取时间差

获取时间差

public static void main(String[] args) {        // TODO Auto-generated method stub        DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");          Date d1=new Date();           try {            System.out.println("这里停留一段时间~");            //停留一段时间            Thread.sleep(10000);        } catch (InterruptedException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }        Date d2=new Date();          long diff = d2.getTime() - d1.getTime();           System.out.println("时间差："+df.format(d2)+" - "+df.format(d1)+" = "+(double)diff/1000+" s");      }