SimpleDateFormat sdf=new SimpleDateFormat("hh:mm"); Date time = sdf.parse(activityVO.getActivity().getActiveStartTime()); Date time2 = sdf.parse(activityVO.getActivity().getActiveEndTime()); sdf = null; Calendar instance = Calendar.getInstance(); instance.setTime(time); long timeInMillis1 = instance.getTimeInMillis(); instance = null; time = null; Calendar instance2 = Calendar.getInstance(); instance2.setTime(time2); long timeInMillis2 = instance2.getTimeInMillis(); instance2 = null; time2 = null; double hours = (timeInMillis2 - timeInMillis1)/1000/60/60.0; DecimalFormat df = new DecimalFormat("##.#"); String dff=df.format(hours); df = null;
Java里计算两个同一天的时间间隔的小时数,并保留一位小数
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转载自2018scala.iteye.com/blog/2261638
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