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How to parse 'dd MMM yyyy'

How to convert date fromat from "dd MMM yyyy" to "yyyy-MM-dd"?
I know I have to use SimpleDatFormat but it doesn't work, neither does any solution from similar questions.
I have a date "18 Dec 2015" that I am trying to format but I get this
java.text.ParseException: Unparseable date: "18 Dec 2015"
Here's my code:
public String parseDate(String d) {
String result = null;
Date dateObject = null;
SimpleDateFormat dateFormatter = new SimpleDateFormat("dd MMM yyyy");
try {
dateObject = dateFormatter.parse(d);
dateFormatter.applyPattern("yyyy-MM-dd");
result = dateFormatter.format(dateObject);
} catch (ParseException e) {
System.out.println(e);
}
return result;
}

Did you try
SimpleDateFormat dateFormatter = new SimpleDateFormat("dd-MMM-yyyy");
instead of
SimpleDateFormat dateFormatter = new SimpleDateFormat("dd MMM yyyy");
(note the hyphens, since your pattern doesn't match your input)
Also helpful: using Locale.US as recommended by #ZouZou

You are passing input as "18-Dec-2015" instead of the form "dd MMM yyyy". Try and pass input like 18 Dec 2015 and it should work.

How to convert date string to Date data type [duplicate]

This question already has answers here:
How to parse a date? [duplicate]
(5 answers)
Closed 9 years ago.
I have a
String dateString = "Fri Feb 14 00:00:00 IST 2014";
I need output in Date datatype like 2014-02-14.
Here is the code which is throwing Parse exception.
Need help in this.
public static void main(String args[]){
DateFormat df = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
String dateString = "Fri Feb 14 00:00:00 IST 2014";
Date convertedDate = null;
try {
convertedDate = df.parse(dateString);
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println(convertedDate);
}

Base point is - Input string should match with date pattern
Raised parse exception as becasue wrong pattern, use this date pattern - EEE MMM dd hh:mm:ss z yyyy
DateFormat df = new SimpleDateFormat("EEE MMM dd hh:mm:ss z yyyy");

You have to convert dateString to matching Date format and then you can format that Date what ever the format you want.
Try this
DateFormat df1 = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
DateFormat df2 = new SimpleDateFormat("EEE MMM dd hh:mm:ss z yyyy");
String dateString = "Fri Feb 14 00:00:00 IST 2014";
Date date=df2.parse(dateString); // convert stringDate to matching Date format
System.out.println(df1.format(date));
Out put:
2014-02-14 12:00:00

Try this:
public static void main(String[] args) {
DateFormat df = new SimpleDateFormat("EEE MMM dd hh:mm:ss z yyyy");
String dateString = "Fri Feb 14 00:00:00 IST 2014";
Date convertedDate = null;
try {
convertedDate = df.parse(dateString);
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println(convertedDate);
}

Date format conversion error [duplicate]

This question already has answers here:
SimpleDateFormat ignoring month when parsing
(4 answers)
Closed 9 years ago.
I am facing the problem while converting the date:
Current format is:Thu Sep 05 12:07:46 IST 2013(dow mon dd hh:mm:ss zzz yyyy)
I need to convert in to:09/04/2013 11:38 PM PDT(mm/dd/yyyy hh:mm a zzz)
But i am not able to convert.

Try using SimpleDateFormatter. You have to tell it the input/output format, you can do that based on this description (you can also find a few common examples there).
The code will be something like this:
try {
String input = "Thu Sep 05 12:07:46 IST 2013";
DateFormat formatter = new SimpleDateFormat("I leave this to you :-)))");
System.out.println(formatter.parse(input));
} catch (ParseException e) {
e.printStackTrace();
}
Hope that helps.

You can do this
TimeZone tz = TimeZone.getTimeZone("PST8PDT"); // example
// required format. Remember M is for month, m for miniute
DateFormat df = new SimpleDateFormat("MM/dd/yyyy hh:mm a zzz");
df.setTimeZone(tz);
String text = df.format(new Date());// current time
System.out.println(text);
Also please check this TimeZones in Java

You try to convert dateformat and timeZone as well, so you need to convert the timezone in your code.
SimpleDateFormat sf = new SimpleDateFormat("dow mon dd hh:mm:ss zzz yyyy");
isoFormat.setTimeZone(TimeZone.getTimeZone("PDT"));
Date date = isoFormat.parse("mm/dd/yyyy hh:mm a zzz");
this may help you.

try {
DateFormat dffrom = new SimpleDateFormat("E MMM dd hh:mm:ss zzz yyyy");
DateFormat dfto = new SimpleDateFormat("MM/dd/yyyy HH:mm:ss a zzz");
Date date = dffrom.parse("Thu Sep 05 12:07:46 IST 2013");
String s = dfto.format(date);
System.out.println(s);
} catch (ParseException e) {
}
OutPut
09/05/2013 00:07:46 AM IST
update
try {
DateFormat dffrom = new SimpleDateFormat("E MMM dd hh:mm:ss zzz yyyy");
DateFormat dfto = new SimpleDateFormat("MM/dd/yyyy HH:mm:ss a zzz");
TimeZone zone = TimeZone.getTimeZone("America/Los_Angeles");
dfto.setTimeZone(zone);
Date date = dffrom.parse("Thu Sep 05 12:07:46 IST 2013");
String s = dfto.format(date);
System.out.println(s);
} catch (ParseException e) {
}
output
09/04/2013 11:37:46 AM PDT

Parsing String with spaces to Date, lead to ParseException

I have date strings in this form Thu Aug 02 00:00:00 GMT+00:00 2012
I have tried to use this method to parse these String in a Date object
public Date fromStringToDate(String data) {
Date result;
SimpleDateFormat sdf = new SimpleDateFormat("yyyy MM dd HH:mm:ss");
try {
result = sdf.parse(data);
return result;
} catch (ParseException e) {
e.printStackTrace();
return null;
}
}
But doesn't works and I get this error
java.text.ParseException: Unparseable date: "Thu Aug 02 00:00:00 GMT+00:00 2012"
I suppose that the problem is caused by a wrong SimpleDateFormat, but I don't know the right syntax to fix it.

You need to adjust the date format to the given string:
EEE MMM dd HH:mm:ss Z yyyy
Make sure use the correct placeholders, case sensitive, etc. Take a look to the Date and Time Patterns.
Sorry, I had a mistake with the 'z' pattern, 'Z' is:
SimpleDateFormat sdf = new SimpleDateFormat("EEE MMM dd HH:mm:ss Z yyyy", Locale.US);
Take a look to Locale.US, it is important to apply because the months and and days are in english.

Use this date formatting:
SimpleDateFormat sdf = new SimpleDateFormat("EEE MMM dd HH:mm:ss z yyyy")

SimpleDateFormat timezone parsing

I'm having a tough time parsing this date its the +0 at the end that is causing a problem, does anyone know whats wrong with my format string?? If I remove the +0 from the date string and the Z from the format string it works fine, unfortunately for my application that isn't an option.
public class Main {
/**
* #param args
*/
public static void main(String[] args) {
SimpleDateFormat dateFormater = new SimpleDateFormat("E, dd MMM yyyy kk:mm:ss zZ");
try {
Date d = dateFormater.parse("Sun, 04 Dec 2011 18:40:22 GMT+0");
System.out.println(d.toLocaleString());
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

One approach is to use normal string-manipulation techniques to translate your string from a form that you're expecting to a form that SimpleDateFormat will understand. You haven't said exactly what range of time-zone formats are acceptable, but one possibility is something like this:
private static Date parse(String dateString) throws ParseException
{
final SimpleDateFormat dateFormat =
new SimpleDateFormat("E, dd MMM yyyy kk:mm:ss Z");
dateString = dateString.replaceAll("(GMT[+-])(\\d)$", "$1\\0$2");
dateString = dateString.replaceAll("(GMT[+-]\\d\\d)$", "$1:00");
return dateFormat.parse(dateString);
}
That would support GMT plus-or-minus a one-or-two-digit hour offset, in addition to still supporting anything already supported by SimpleDateFormat, such as EST or GMT+1030.
Alternatively, if you know it will always be GMT, then you can just set the time-zone on the formatter, and ignore the time-zone in the string:
private static Date parse(String dateString) throws ParseException
{
final SimpleDateFormat dateFormat =
new SimpleDateFormat("E, dd MMM yyyy kk:mm:ss");
dateFormat.setTimeZone(TimeZone.getTimeZone("GMT"));
return dateFormat.parse(dateString);
}
You can also split the difference. I notice that the time-zone format in your string matches what's expected by TimeZone.getTimeZone(). Is that intentional? If so, you can grab that time-zone format out of the string, pass it to dateFormat.setTimeZone beforehand, and then ignore it during actual parsing:
private static Date parse(final String dateString) throws ParseException
{
final SimpleDateFormat dateFormat =
new SimpleDateFormat("E, dd MMM yyyy kk:mm:ss");
if(dateString.indexOf("GMT") > 0)
dateFormat.setTimeZone
(
TimeZone.getTimeZone
(dateString.substring(dateString.indexOf("GMT")))
);
return dateFormat.parse(dateString);
}

If the format is that consistent, you could append 0:00 to the date string.
String dateString = "Sun, 04 Dec 2011 18:40:22 GMT+0";
SimpleDateFormat sdf = new SimpleDateFormat("E, dd MMM yyyy kk:mm:ss z", Locale.ENGLISH);
Date date = sdf.parse(dateString + "0:00");
System.out.println(date);
(note that I fixed the SimpleDateFormat construction to explicitly specify the locale which would be used to parse the day of week and month names, otherwise it may fail on platforms which does not use English as default locale; I also wonder if you don't actually need HH instead of kk, but that aside)