最近项目一直会出现时间转换报错,一直不知道是什么问题??? java.lang.NumberFormatException: multiple points at sun.misc.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:1110) at java.lang.Double.parseDouble(Double.java:540) at java.text.DigitList.getDouble(D
1.inner join ,left join 与 right join (from 百度知道) 例表aaid adate1 a12 a23 a3表bbid bdate1 b12 b24 b4 (1)两个表a,b相连接,要取出id相同的字段 select * from a inner join b on a.aid = b.bid 此时的取出的是:1 a1 b12 a2 b2 (2)left join 指:select * from a left jo
/* 时间转换start */ public static void main(String args[]) { Date nowTime = new Date(); System.out.println(nowTime); SimpleDateFormat time = new SimpleDateFormat("yyyy/M/d"); BeanDayTraffic bd = new BeanDayTraffic(); System.out.println(time.format(n