如何在java中将日期格式从YYMMDD更改为YYYY-MM-DD?
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How to change the date format from YYMMDD to YYYY-MM-DD in java?
提问by Abhi
I am getting the date format from the machine readable code as YYMMDD, how can i change it into YYYY-MM-DD ? for example am getting 871223(YYMMDD) i wand to change it into 1987-12-23(YYYY-MM-DD) is it possible ? can anyone help me with some sample codes?
我从机器可读代码中获取日期格式为 YYMMDD,如何将其更改为 YYYY-MM-DD ?例如我得到 871223(YYMMDD) 我想把它改成 1987-12-23(YYYY-MM-DD) 有可能吗?谁能帮我一些示例代码?
采纳答案by Wilson
The code goes something like this:
代码是这样的:
SimpleDateFormat fromUser = new SimpleDateFormat("dd/MM/yyyy");
SimpleDateFormat myFormat = new SimpleDateFormat("yyyy-MM-dd");
try {
String reformattedStr = myFormat.format(fromUser.parse(inputString));
} catch (ParseException e) {
e.printStackTrace();
}
回答by Sanjeev
Simple steps to follow and achieve what you want:
遵循并实现您想要的简单步骤:
for example date is:
例如日期是:
String date = "871223";
Create SimpleDateFormatwith source pattern
使用源模式创建SimpleDateFormat
SimpleDateFormat sdf = new SimpleDateFormat("yyMMdd");
get the date object by parsing the date
通过解析日期获取日期对象
Date d1 = sdf.parse(date);
Change the pattern to the target one
将模式更改为目标模式
sdf.applyPattern("yyyy-MM-dd");
Format as per the target pattern
按照目标模式格式化
System.out.println(sdf.format(d1));
Hope this helps.
希望这可以帮助。