print?public class Test { 

 

    public static void main(String[] args) { 

        String date1="2013-06-24 12:30:30"; //  

        String date2="2013-06-26 12:30:31";   

        try { 

         if(jisuan(date1,date2)){ 

             System.out.println("可用");  

              

         }else{ 

             System.out.println("已过期"); 

         } 

        } catch (Exception e) { 

            // TODO: handle exception  

        } 

    } 

     

    //判断是否超过24小时  

    public static boolean jisuan(String date1, String date2) throws Exception { 

        java.text.SimpleDateFormat sdf = new java.text.SimpleDateFormat("yyyy-M-d HH:mm:ss"); 

        java.util.Date start = sdf.parse(date1); 

        java.util.Date end = sdf.parse(date2); 

        long cha = end.getTime() - start.getTime(); 

        double result = cha * 1.0 / (1000 * 60 * 60); 

        if(result<=24){ 

             //System.out.println("可用");   

             return true; 

        }else{ 

             //System.out.println("已过期");  

             return false; 

        } 

    } 

     

}