Earlier I posted the following question: How can I convert this date in Java?
But now I would like to know how I can convert this string into a date/time.
2010-03-15T16:34:46Z
For example: 03/15/10
UPDATED:
String pattern = "MM/dd/yy 'at' HH:mm";
Date date = new Date();
try {
date = new SimpleDateFormat(pattern).parse(q.getUpdated_at());
} catch (ParseException e) {
e.printStackTrace();
}
dateText.setText(new SimpleDateFormat("MM/dd/yy 'at' hh:mma").format(date));
Gives me a result like:
Mon Mar 15 16:34:50 MST 2010
How can I format it to be
03/15/10 at 4:34PM
?
Both SimpleDateFormat and joda-time DateTimeFormat can parse this, using this pattern:
String pattern = "yyyy-MM-dd'T'HH:mm:ss'Z'";
For example:
Date date = new SimpleDateFormat(pattern).parse(dateString);
And (joda-time):
DateTimeFormatter dtf = DateTimeFormat.forPattern(pattern);
DateTime dateTime = dtf.parseDateTime(s);
Update
You have 2 date formats involved - one for parsing the input, and one for formatting the output. So:
dateText.setText(new SimpleDateFormat("MM/dd/yy 'at' hh:mma").format(date));
(Of course, for the sake of optimization, you can instantiate the SimpleDateFormat only once, and reuse it)
In a nutshell, you want to convert a date in a string format to a date in another string format. You have:
2010-03-15T16:34:46Z
and you want
03/15/10 at 4:34PM
You don't want to end up using java.util.Date object as you initially implied in your question. You also don't want to use its toString() since that returns a fixed format as definied in its javadoc.
The answer of Bozho still applies. Use java.text.SimpleDateFormat. First, you need to parse the date in string format into a Date object so that you can format it back into another string format.
// First parse string in pattern "yyyy-MM-dd'T'HH:mm:ss'Z'" to date object.
String dateString1 = "2010-03-15T16:34:46Z";
Date date = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'").parse(dateString1);
// Then format date object to string in pattern "MM/dd/yy 'at' h:mma".
String dateString2 = new SimpleDateFormat("MM/dd/yy 'at' h:mma").format(date);
System.out.println(dateString2); // 03/15/10 at 4:34PM
If you want to format output string, change following line in your code
dateText.setText(date.toString());
to
dateText.setText(String.format("%1$tm/%1$td/%1$ty at %1$tl:%1$tM%1$Tp", date));
Related
I have a string "1427241600000" and I want it converted to "yyyy-MM-dd" format.
I have tried, but I am not able to parse it, please review the below code
try {
String str = "1427241600000";
SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd");
Date date =sf.parse(str);
System.out.println(date);
} catch (ParseException e) {
e.printStackTrace();
}
I would like to know where I went wrong.
You should try it the other way around. First get the Date out of the milliTime and then format it.
String str = "1427241600000";
SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd");
Date date = new Date(Long.parseLong(str));
System.out.println(sf.format(date));
the conversion is highly dependent on what format the timestamp is in. But i assume the whole thing should actually be a long and is simply the systemtime from when the timestamp was created. So this should work:
String str = ...;
Date date = new Date(Long.parseLong(str));
Use Date date =new Date(Long.parseLong(str)); to convert your String to Date object.
if you are using SimpleDateFormat() the format specified as a parameter to this function should match the format of the date in the String (str in your case). In your case yyyy-MM-dd does not match the format of the time stamp (1427241600000).
You can do it like this:
use a SimpleDateFormat with an appropriate format string (be careful to use the correct format letters, uppercase and lowercase have different meanings!).
DateFormat format = new SimpleDateFormat("MMddyyHHmmss");
Date date = format.parse("022310141505");
Here is the code I am using:
String string = "08/07/2013".replace('/', '-');
Date date = new SimpleDateFormat("yyyy-MM-dd").parse(string);
Why does date return: "Wen Jan 3 00:00:00 EST 14"? It is not at all the date format I told it to use.
Edit: I need this format because a database I am using requires this format.
The format you use to parse the date string, does not match it. You are using yyyy for 08.
Use the following format:
new SimpleDateFormat("dd-MM-yyyy")
and why at all are you replacing the / with -? You can build the pattern for your original string only:
String string = "08/07/2013"
Date date = new SimpleDateFormat("dd/MM/yyyy").parse(string);
and if you want your date string in yyyy-MM-dd format, then you can format the date using DateFormat#format(Date) method:
String formattedDate = new SimpleDateFormat("yyyy-MM-dd").format(date);
See also:
Change date format in a Java string
SimpleDateFormat Java Doc
When you are specifying some Simple Date format using string e.g. "yyyy-MM-dd" , you have to provide your date in same format to get a date object eg. "1991-07-24" .
String mydate = "1991/07/24";
Date formattedDate = new SimpleDateFormat("yyyy/MM/dd").parse(mydate);
now if you want to convert it in any other format, you can do that by FORMATTING this date object into that perticular format..
String dateInOtherFormat = new SimpleDateFormat("dd-MMM-yyyy").format(formatteddate);
and the output of dateInOtherFormat will be ... 24-JUL-1991 .
Ok my sugestion is stupid but if you need this format try this
String[] arr = "08/07/2013".split("/");
String newString = arr[2]+"-"+arr[1]+"-"arr[0];
Date date = new SimpleDateFormat("yyyy-MM-dd").parse(newString);
NOTE If your original strin is in format "MM/dd/YYYY use this:
String newString = arr[2]+"-"+arr[0]+"-"arr[1];
How can i get data in format "YYYY-MM-DD 00:00:00.0" using class Date (it's extremly important to use exactly this class)?
I tried to do everything i can think of:
SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");
df.format(date)
and
String pattern = "yyyy-MM-dd HH:mm:ss.S";
SimpleDateFormat format = new SimpleDateFormat(pattern);
try {
Date date = format.parse("2011-01-18 00:00:00.0");
} catch (ParseException e) {
e.printStackTrace();
}
byt when i print date using logger i get this format "Tue Sep 30 00:00:00 MSK 1913".
Try this
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.S");
Date date = format.parse("2011-01-18 00:00:00.0");
System.out.println(format.format(date));
Are you sure you want the hours, minutes, secs to be zeroes?
Or do you mean the pattern yyyy-MM-dd HH:mm:ss ?
The date class is always independent of the formatting. It only needs to be translated when you print it, like this:
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String out = df.format(date)
System.out.println(out);
Or do you want to strip the time out of the date object? or something.
You are confused by Date.toString() and SimpleDateFormat.format()
An object of Date (java.util.Date) has no format information. If you call date.toString(), (which is called by your logger), you got default representation of this object, you have seen what it is.
However, SimpleDateFormat.format() will give you a string as return value, this value will format the Date object with a pattern defined by SimpleDateFormat.
In your code, you first parsed the string, with certain pattern, to get the date object. If it was successful, you got the Date object, here, for this date object, you don't have any format information, even if you have defined a pattern to parse the input string. If you want to print/output (to string again) the date object, you have to use the SimpleDateFormat.format() method.
I hope the below one will solve your problem when you need to do for dynamic dates.
Date today = new Date();
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd 00:00:00");
String formattedDate = sdf.format(today);
System.out.println(formattedDate);
//Above line output (formatted String object) is 2017-12-29 00:00:00
System.out.println(format.format(formattedDate));
//Above line output(parsed Date object) is Fri Dec 29 00:00:00 IST 2017
For Date object you can't get the output as yyyy-MM-dd 00:00:00, but you will get this format in String object type.
HI,
I am converting String to Date format. But it returns wrong dates. for example,
String startDate = "08-05-2010"; // (MM/dd/yyyy)
I want to convert this to "Date" object like this, 05-JUL-10
How to do that? I tried like this
SimpleDateFormat dateFormat = new SimpleDateFormat("dd-MMM-yy");
scal1.setTime(dateFormat.parse((startDate)));
but i am getting "Unparseable date:" .
If you want to convert a date string of one format to another format, you can use format() and parse() methods of SimpleDateFormat class
First you need to parse the string to a date object using parse() method setting the source pattern and then format the date object using format() method setting the target pattern:
SimpleDateFormat sourceFormat = new SimpleDateFormat("MM-dd-yyyy");
Date sourceFormatDate = sourceFormat.parse("08-05-2010");
SimpleDateFormat destFormat = new SimpleDateFormat("dd-MMM-yy");
String destFormatDateString = destFormat.format(sourceFormatDate);
System.out.println(destFormatDateString); // 05-Aug-10
Unless you've left something out, it looks like you're trying to parse it with the wrong format, i.e. you have an mm-dd-yyyy, and you're trying to parse it with the format dd-MMM-yy. Try a separate date format for what you're parsing from what you're encoding.
SimpleDateFormat format = new SimpleDateFormat(“yyyy-MM-dd”);
String strDate = “2007-12-25″;
Date date = null;
try {
date = format.parse(strDate);
} catch (ParseException ex) {
ex.printStackTrace();
}
The format dd-MMM-yy you use to parse the string is wrong; the format should be dd-MM-yyyy.
String startDate = "08-05-2010";
DateFormat dateFormat = new SimpleDateFormat("dd-MM-yyyy");
Date date = dateFormat.parse((startDate));
Note that Date objects themselves do not have a format: a Date objects just represents a date and time value, just like an int is just a number, and doesn't have any inherent formatting information. If you want to display the Date in a certain format, you'll have to use a DateFormat object again to format it:
DateFormat dateFormat = new SimpleDateFormat("dd-MMM-yy");
System.out.println(dateFormat.format(date));
// output: 08-May-10
How can I take a string in a format such as: 2008-06-02 00:00:00.0 and convert it to: 02-Jun-2008?
Can I somehow take the original string, convert it to a Date object, then use a formatter to get the final output (rather than parsing the string myself)? Thanks!
You can use SimpleDateFormat to convert between a String and a Date object and vice versa based on a pattern. Click the API link, you'll see patterns being explained in detail. A 4-digit year can be represented with yyyy, a 3-character month abbreviation can be represented with MMM and so on.
First you need to parse the String of the first format into a Date object:
SimpleDateFormat sdf1 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
Date date = sdf1.parse(inputString);
Then you need to format the Date into a String of the second format:
SimpleDateFormat sdf2 = new SimpleDateFormat("dd-MMM-yyyy", Locale.ENGLISH);
String outputString = sdf2.format(date);
Note that you need to take the Locale into account as well to get the month to be printed in English, else it will use the platform's default locale to translate the month.
Use 2 instances of SimpleDateFormat class. One for converting your input string to date and second to convert date back to string but in another format.
Here is an example of using SimpleDateFormat.
DateFormat startFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.S");
DateFormat endFormat = new SimpleDateFormat("dd-MM-yyyy");
String outputString = null;
try {
Date date = startFormat.parse(inputString);
outputString = endFormat.format(date);
} catch(ParseException pe) {
throw new IllegalArgumentException(inputString + " is not properly formated.", pe);
}
You can definitely use SimpleDateFormat class like others have recommended.
Another suggestion if it applies in your case. If you are getting this data from a sql query you can also use to_char() method to format it in the query itself. For example: to_char(column_name,'DD-MON-YYYY')