關於JAVA中DateFormat的問題
數據庫：mysql
表：   data_store_table  
字段：DateTime
字段類型：TIMESTAMP
默認值：CURRENT_TIMESTAMP
String   sql= "select   max(`DateTime`),min(`DateTime`)   from   data_store_table   where   Work_Order= "+Work_Order;
ResultSet   rs=condb.executeQuery(sql);
if(rs!=null&&rs.next()){
java.util.Date   max=rs.getTimestamp(1);
java.util.Date   min=rs.getTimestamp(2);

System.out.println(max);
System.out.println(min); DateFormat   df=new   SimpleDateFormat( "yyyy-MM-dd   hh:mm:ss ");
String   from=df.format(min);
String   to=df.format(max);
System.out.println(to);
System.out.println(from);
}


DateFormat   發生錯誤
max:2007-03-20   14:09:39.0
min:2007-03-19   09:54:11.0
to:2007-03-20   02:09:39  
from:2007-03-19   09:54:11



------解决方案--------------------
将hh:mm:ss换成HH:mm:ss就解决了
hh代表12小时制，HH代表24小时制

System.out.println(min);DateFormat df=new SimpleDateFormat( "yyyy-MM-dd HH:mm:ss ");