Error using SimpleDateFormat

问题

I'm trying to use the SimpleDateFormat class to parse a DateTime out of this string:

05-Jul-2012 11:38:02,442 UTC AM

I tried the following format string:

SimpleDateFormat dateformatYYYYMMDD = new SimpleDateFormat("dd-MMM-yyyy HH:mm:ss,SSS z a");

Date temp = dateformatYYYYMMDD.parse(time);

But it generates the error:

Error: Unparseable date: ""

If I use zZ I get : Error: Unparseable date: "05-Jul-2012 11:38:02,442 UTC AM"

Any hints on how to get around this?

回答1:

That works fine for me when I try to run:

String time = "05-Jul-2012 11:38:02,442 UTC AM";
SimpleDateFormat dateformatYYYYMMDD = new SimpleDateFormat("dd-MMM-yyyy HH:mm:ss,SSS z a");
Date temp = dateformatYYYYMMDD.parse(time);

Are you sure time is set to something?

回答2:

The code you've given works fine for me. Perhaps the problem is your locale? Try specifying it when you create the SimpleDateFormat:

SimpleDateFormat format =new SimpleDateFormat("dd-MMM-yyyy HH:mm:ss,SSS z a",
                                              Locale.US);

That way it will try to find US month and am/pm designator names.

回答3:

Try this...

System.out.println(new SimpleDateFormat("dd-MMM-yyyy HH:mm:ss,SSS z a",
                                              Locale.US).format(new Date()));

回答4:

I'm not able to reproduce your error. Are you sure you are using:

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

来源：https://stackoverflow.com/questions/11507845/error-using-simpledateformat

标签

java

parsing

simpledateformat