SimpleDateFormat不正确的结果 [英] Improper result of SimpleDateFormat

问题描述

我想转换 Tue Jun 01 00:00:00 IST 112 into 01-Jun-2012 / p>

我使用

 日历calendar = new GregorianCalendar（year，6， Calendar.DAY_OF_MONTH）; 
 Date maxDate = new Date（）; 
 maxDate = calendar.getTime（）; 
 calendar.set（Calendar.DAY_OF_MONTH，calendar.getActualMinimum（Calendar.DAY_OF_MONTH））; 
 SimpleDateFormat s = new SimpleDateFormat（dd-mmm-yyyy）; 
 s.format（maxDate）; 
  

但是我得到 30-000-0112

解决方案

使用CAPITAL M为月，

 code> SimpleDateFormat s = new SimpleDateFormat（dd-MMM-yyyy）; 
  

另外你先设置日期，然后重设日历，我猜你不想做什么所以可能需要将其更改为如下

  Date maxDate = new Date（）; 
 calendar.set（Calendar.DAY_OF_MONTH，calendar.getActualMinimum（Calendar.DAY_OF_MONTH））; 
 maxDate = calendar.getTime（）; 
 SimpleDateFormat s = new SimpleDateFormat（dd-MMM-yyyy）; 
 s.format（maxDate）; 
  

查看

• SimpleDateFormat API文档

I want to convert Tue Jun 01 00:00:00 IST 112 into 01-JUN-2012

I used

 Calendar calendar = new GregorianCalendar(year, 6, Calendar.DAY_OF_MONTH); 
     Date maxDate=new Date();
     maxDate=calendar.getTime();  
     calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMinimum(Calendar.DAY_OF_MONTH)); 
      SimpleDateFormat s=new SimpleDateFormat("dd-mmm-yyyy");
       s.format(maxDate);

But I get 30-000-0112

解决方案

Use CAPITAL M for month,

 SimpleDateFormat s=new SimpleDateFormat("dd-MMM-yyyy");

Also you are setting date first and then you are resetting calendar which I guess not what you want to do so may be you need to change it to as follows

Date maxDate=new Date();
calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMinimum(Calendar.DAY_OF_MONTH)); 
maxDate=calendar.getTime();  
SimpleDateFormat s=new SimpleDateFormat("dd-MMM-yyyy");
s.format(maxDate);

See

• SimpleDateFormat API doc

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