Java 日期提前几天

Calendar cal = Calendar.getInstance();
   cal.setTime(employee.getDrivingLicenseFirstDate());
   //cal.add(Calendar.DAY_OF_MONTH, 3);//3天
   cal.add(Calendar.YEAR, 3);//3年
   Date date2 = cal.getTime();
   Date date = new Date();
   int i = date.compareTo(date2);
   if(i < 0){
       return "初领日期 未满3年,禁止报名 ";
   }

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转载自blog.csdn.net/tanzongbiao/article/details/82528662