java中求时间间隔(精确到分钟)

long  nowTime = System.currentTimeMillis();
System.out.print("现在的时间是"+nowTime);
SimpleDateFormat dateformat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date datetm = null;
try {
    datetm = dateformat.parse("1980-11-04 18:09:26");
} catch (ParseException e) {
    e.printStackTrace();
}
lateRepayContinual.setCreateTime(datetm);
Date createTime = lateRepayContinual.getCreateTime();
System.out.print("创建时间是多少"+createTime);

long time = nowTime - createTime.getTime();
int minutes = (int) (time / (1000 * 60));
System.out.println("时间间隔是:"+minutes);