关于jdbc中
今天在使用jdbc时,发现里面有getDate(int,Calendar),java document中说Retrieves the value of the designated JDBC DATE parameter as a java.sql.Date object, using the given Calendar object to construct the date. With a Calendar object, the driver can calculate the date taking into account a custom timezone and locale. If no Calendar object is specified, the driver uses the default timezone and locale
对于date来说怎么可能有时区的概念,不知道这是怎么回事