如何检查日期是否超过七天
我想检查两个日期是否超过一周,例如,检查两个日期是否有七天,
此时数据范围应仅在一周内(7天)。
我试过这样的事,
import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Date; public class IsDateRangeExceedsWeek { public static void main( String[] args ) { try{ SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); Date fromDate = sdf.parse("2015-05-01"); Date toDate = sdf.parse("2015-05-07"); System.out.println(sdf.format(fromDate)); System.out.println(sdf.format(toDate)); if(fromDate.compareTo(toDate)>0){ System.out.println("From Date should be less than To Date"); } else if(fromDate.compareTo(toDate)==0){ System.out.println("From Date is equal to To Date"); } }catch(ParseException ex){ ex.printStackTrace(); } } }
有人可以帮忙吗?
最简单的方法是使用Jodatime并使用
Days.daysBetween(start, end).getDays()
另一种解决方案是使用日历,添加7天并再次进行比较。
Calendar c=Calendar.getInstance(); c.setTime(fromDate); c.add(Calendar.DATE,7); if(c.getTime().compareTo(toDate)<0){ It's more than 7 days. }
使用Java 8及更高版本中内置的java.time类:
LocalDate from = LocalDate.parse("2015-05-01"); LocalDate to = LocalDate.parse("2015-05-07"); long days = ChronoUnit.DAYS.between(from, to); // 6 days long weeks = ChronoUnit.WEEKS.between(from, to); // 0 weeks
你可以尝试这样:
if(Days.daysBetween(fromDate,toDate ).getDays()>7)
检查JodaTime API