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Topic: java.sql.date 的日期计算问题

1.java.sql.date 的日期计算问题	Copy to clipboard
Posted by: jerry010 Posted on: 2004-09-05 22:05 通过java.sql.date可以计算日期的，可是遇到一个问题：就是8月31日等几个月末使用java.sql.date(date.getYear,date.getMonth+1,date.getDate)得出月份的结果是下两个月的返回值，如2004/08/31-->2004/10 何故啊？如何解决？谢谢

2.Re:java.sql.date 的日期计算问题 [Re: jerry010]	Copy to clipboard
Posted by: why Posted on: 2004-09-05 22:33 1. java.sql.Date(int year, int month, int day) is deprecated. use java.util.Calendar 2. 2004/08/31 --(month + 1)--> 2004/09/31 but 2004/09 does not have the 31st day, so the result is 2004/10/01

3.Re:java.sql.date 的日期计算问题 [Re: jerry010]

Posted by: why
Posted on: 2004-09-06 08:28

java.sql.Date(date.getYear(),date.getMonth()+1,date.getDate())

you don't have to add 1 to date,getMonth()
since both java.sql.Date(int,int,int) and java.util.Date(int,int,int) expects the month value from 0 to 11

check http://java.sun.com/j2se/1.4.2/docs/api/java/sql/Date.html#Date(int,%20int,%20int)
and http://java.sun.com/j2se/1.4.2/docs/api/java/util/Date.html#Date(int,%20int,%20int)