try{     Date.valueOf(String aString); } catch(Exception ex){     System.err.println("The format of string is not correct"); }
  或者 public class forother {     public static void main(String[] args){                  SimpleDateFormat s=new SimpleDateFormat("yyyy-MM-dd' 'HH:mm:ss");                 String ooo="2005-02-18 15:39:15";         String ppp="2005-02-01 15:25:15";               try{         Date tt=s.parse(ooo);         Date yy=s.parse(ppp);         long aa;         if(tt.getTime()>yy.getTime())             aa=tt.getTime()-yy.getTime();         else             aa=yy.getTime()-tt.getTime();         long date=aa/1000/60/60/24;         System.out.println("***");         System.out.println("hahahha"+date);         System.out.println("*******");         }catch(Exception e){                      }             } }
   
 
  |