我正在尝试从数据库中获取时间戳值,将它们转换为日历,然后将它们转换回时间戳,但它们会失去精度。
这是重现问题的代码
import java.sql.Timestamp;
import java.util.Calendar;
public class Test {
public static void main(String[] args)
{
Timestamp timestamp = new Timestamp(112, 10, 5, 15, 39, 11, 801000000);
System.out.println("BEFORE "+timestamp.toString());
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(timestamp.getTime());
timestamp = new Timestamp(calendar.getTimeInMillis());
System.out.println("AFTER "+timestamp.toString());
}
}
这是转换的示例结果
BEFORE 2012-10-18 14:30:13.362001
AFTER 2012-10-18 14:30:13.362
它失去了精确性。我该怎么做才能保持十进制值不变?