This question already has answers here:
Get Date type object in format in java
(6 answers)
Closed 6 years ago.
I want to convert String to Date using following format: "yyyy-MM-dd"
public class TestProgram {
public static void main(String[] args) {
Calendar cal = Calendar.getInstance();
cal.add(Calendar.DATE, -2);
Date toDelete = new Date(cal.getTimeInMillis());
SimpleDateFormat s = new SimpleDateFormat("yyyy-MM-dd");
String formatDate = s.format(toDelete);
System.out.println( "Date before 2 Days: " + formatDate);
}
}
Current datatype format is String, I want to convert this in Date datatype, how to do that with this format [yyyy-MM-dd].?
What you're looking for is:
//formatDate is String containing date
SimpleDateFormat s = new SimpleDateFormat("yyyy-MM-dd");
Date parsedDate = s.parse(formatDate);
You could do something like this just to get Date format:
String yourdate = "2015-04-08";
Date date = java.sql.Date.valueOf(yourdate);
Alternatively I recommend using Apache/Joda libraries for date manipulation.
Related
This question already has answers here:
Why is Java's SimpleDateFormat not thread-safe? [duplicate]
(9 answers)
Closed 4 years ago.
I am converting Date to string format in yyyy-MM-dd HH:mm:ss format to save in sqlite database
below is object declared for simple date format
public static SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Sometime it prepends pair of zeros in date as you can see in below image
Example Wrong date returns as as below
2018-08-25 02:32:0000
2018-08-25 02:32:0049
2018-0008-25 02:32:50
2018-08-24 0023:32:50
2018-08-0024 23:32:50
I have created custom funtion to correct this wrong date. But I want to know exact cause of this issue.
below is the code
public static String getCurrentDateTime() {
Date d = new Date();
String datetime = sdf.format(d);
if (datetime.length() > 19) {
datetime = correctDate(datetime);
}
return datetime;
}
I'm sure that if you don't use that static instance of SimpleDateFormat you will have no problem:
public static String getCurrentDateTime() {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date d = new Date();
String datetime = sdf.format(d);
return datetime;
}
See these links:
Why is Java's SimpleDateFormat not thread-safe?
"Java DateFormat is not threadsafe" what does this leads to?
SimpleDateFormat is not thread safe that's why you should check if in your calling code there is no issue with that.
This question already has answers here:
How do I convert the date from one format to another date object in another format without using any deprecated classes?
(10 answers)
Closed 4 years ago.
I am facing an issue while converting dd/MM/yyyy format date to ccyy/MM/dd using Java. Can someone, please help me on this? It would be great If I get some example.
Here is my code## Example##
SimpleDateFormat dateFormat1 = new SimpleDateFormat("ddMMyyyy");
Date date1 = new Date();
LocalDate date = DateTimeFormat.forPattern("ddMMyyyy").parseLocalDate(dateFormat1.format(date1));
System.out.println("Century=" + date.getCenturyOfEra());
String usFormat = DateTimeFormat.forPattern("ccyy/MM/dd").print(date);
System.out.println(usFormat);
Thanks in advance.
Actually CCYYMMdd format is same as yyyyMMdd format since CC (century) is year (integer divide by 100) according to ISO 8601 you can read more in this post
converting dd/MM/yyyy date to ccyy/MM/dd date is simple
you can try this approach:
// define date source format
SimpleDateFormat sourceformat = new SimpleDateFormat("dd/MM/yyyy");
// define date target format that you want to convert to it
SimpleDateFormat targetformat = new SimpleDateFormat("yyyy/MM/dd");
// parse the input date as string with source format
// and then format it to the required target format
String dateAsString = "02/08/2018";
Date date = sourceformat.parse(dateAsString);
System.out.println(targetformat.format(date));
Output:
2018/08/02
Here is the solution for this
Date date = new Date();
SimpleDateFormat dateFormat = new SimpleDateFormat("dd/MM/yyyy");
String currentDate = dateFormat.format(date);
System.out.println("currentData::"+currentDate);
DateTime dt = new DateTime(dateFormat.parse(currentDate));
System.out.println("DT::"+dt);
DateTimeFormatter fmt = DateTimeFormat.forPattern("CCYY/MM/DD");
String str = fmt.print(dt);
System.out.println("CC Date::"+str);
This question already has answers here:
Y returns 2012 while y returns 2011 in SimpleDateFormat
(5 answers)
Closed 5 years ago.
I am trying to parse string into a date using the following code:
public static Date dateFormatter(String s)
{
SimpleDateFormat ft = new SimpleDateFormat ("MMddYYYY");
Date excelDate=null;
try
{
excelDate = ft.parse(s);
Date formatString = ft.format(excelDate);
System.out.println("Date to be printed in Excel is :" +formatString);
return excelDate;
}
catch(Exception ae)
{
System.out.println("No date");
}
return excelDate;
}
I am passing in the argument "04202017".
This function is not working for me. I am not able to figure out what I am doing wrong. Can anybody please help me?
You have to use ft.parse(s); instead of format(excelDate). Format is the other way (Date -> String)
DateFormat.parse(String)
And you dont have to parse the Date back to a String.
Corrected code:
public static Date dateFormatter(String s) {
SimpleDateFormat ft = new SimpleDateFormat ("MMddYYYY");
Date excelDate = null;
try {
excelDate = ft.parse(s);
System.out.println("Date to be printed in Excel is :" +excelDate);
return excelDate;
} catch(Exception ae) {
System.out.println("No date");
}
return excelDate;
}
You already parsed String s to excelDate with date format that you want. So i think it's good and enough to print just excelDate.
System.out.println("Date to be printed in Excel is :" +excelDate);
Like that.
And also change MMddYYYY to MMddyyyy.
Try parse method instead of format
For String to Date, use:
SimpleDateFormat.parse(String);
For Date to String, use:
SimpleDateFormat.format(date);
However, in your code, you already parsed the String and assigned into excelDate on this line:
excelDate = ft.parse(s);
try this one:
String string = "march 9, 2017";
DateFormat format = new SimpleDateFormat("MMMM d, yyyy", Locale.ENGLISH);
Date date = format.parse(string);
System.out.println(date);
It would be nice to use Java 1.8's new time classes (which are in java.time.* package).
public static void main(String[] args)
{
LocalDateTime dateTime = LocalDateTime.now();
DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
// To String
String dateString = dateTime.format(formatter);
System.out.println(dateString);
// To LocalDateTime
LocalDateTime parsedLocalDateTime = LocalDateTime.parse(dateString, formatter);
}
This question already has answers here:
Parsing ISO-8601 DateTime with offset with colon in Java
(4 answers)
Closed 6 years ago.
I just needed a sample code block or suggestion to convert the following date string to utc time and find difference with current time in java?
date string "2016-03-21T15:58:36-04:00"
Thanks in advance
You need to format the date string in following way:
String string = "2016-03-21T15:58:36-04:00";
DateFormat format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSXXX", Locale.ENGLISH);
Date date = format.parse(string);
Then you just need to use Date APIs to find the time difference.
public static long getMillisFrom(String inStrDate) {
DateFormat ISO_DATE_FORMAT = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'", Locale.ENGLISH);
Date inDate = ISO_DATE_FORMAT.parse(inStrDate);
Date curDate = new Date();
long diffMillis = curDate().getTime() - inDate.getTime();
return diffMillis
}
This question already has answers here:
Parse String to Date with Different Format in Java
(10 answers)
Illegal pattern character 'T' when parsing a date string to java.util.Date
(4 answers)
Android Studio Convert ISO string to "America/New_York" when adding to event to calendar
(1 answer)
Change date format in a Java string
(22 answers)
Closed 9 years ago.
Hi i have the following string:2012-05-20T09:00:00.000Z
and i want to format it to be like 20/05/2012, 9am
How to do so in java?
Thanks
If you are looking for a solution to your particular case, it would be:
Date date = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'").parse("2012-05-20T09:00:00.000Z");
String formattedDate = new SimpleDateFormat("dd/MM/yyyy, Ka").format(date);
use SimpleDateFormat to first parse() String to Date and then format() Date to String
package newpckg;
import java.util.Date;
import java.text.ParseException;
import java.text.SimpleDateFormat;
public class StrangeDate {
public static void main(String[] args) {
// string containing date in one format
// String strDate = "2012-05-20T09:00:00.000Z";
String strDate = "2012-05-20T09:00:00.000Z";
try {
// create SimpleDateFormat object with source string date format
SimpleDateFormat sdfSource = new SimpleDateFormat(
"yyyy-MM-dd'T'hh:mm:ss'.000Z'");
// parse the string into Date object
Date date = sdfSource.parse(strDate);
// create SimpleDateFormat object with desired date format
SimpleDateFormat sdfDestination = new SimpleDateFormat(
"dd/MM/yyyy, ha");
// parse the date into another format
strDate = sdfDestination.format(date);
System.out
.println("Date is converted from yyyy-MM-dd'T'hh:mm:ss'.000Z' format to dd/MM/yyyy, ha");
System.out.println("Converted date is : " + strDate.toLowerCase());
} catch (ParseException pe) {
System.out.println("Parse Exception : " + pe);
}
}
}