如何检查检查日期是否为正确的格式？

解决方法

下面的例子演示了如何使用String类的matches()方法检查日期是否是在一个适当的格式。

public class Main {
   public static void main(String[] argv) {
      boolean isDate = false;
      String date1 = "8-05-1988";
      String date2 = "08/04/1987" ;
      String datePattern = "\d{1,2}-\d{1,2}-\d{4}";
      isDate = date1.matches(datePattern);
      System.out.println("Date :"+ date1+": matches with
      the this date Pattern:"+datePattern+"Ans:"+isDate);
      isDate = date2.matches(datePattern);
      System.out.println("Date :"+ date2+": matches with 
      the this date Pattern:"+datePattern+"Ans:"+isDate);
   }
}

结果

上面的代码示例将产生以下结果。

Date :8-05-1988: matches with the this date Pattern:
d{1,2}-d{1,2}-d{4}Ans:true
Date :08/04/1987: matches with the this date Pattern:
d{1,2}-d{1,2}-d{4}Ans:false