Convert string to date

[Roopesh Rana]

I am trying to convert a string into date

String cDate = "2010-08-26 15:28:18";
SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
				Date date = sdf.parse(cDate);
				long millis = date.getTime();

Exception :

Exception in thread "main" java.text.ParseException: Unparseable date: "2010-08-26 15:28:18"
	at java.text.DateFormat.parse(Unknown Source)
	at ReadFile.modifyData(ReadFile.java:121)
	at ReadFile.main(ReadFile.java:60)

[Wayan Saryada]

Hi Roopesh,

The exception happened because your string date is not valid according to your SimpleDateFormat pattern.

[Roopesh Rana]

Wayan Saryada wrote:Hi Roopesh,

The exception happened because your string date is not valid according to your SimpleDateFormat pattern.

String cDate = "2010-08-26 15:28:18";
DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
Date date = (Date)formatter.parse(cDate);

Exception :

Exception in thread "main" java.lang.ClassCastException: java.time.format.Parsed cannot be cast to java.sql.Date
	at ReadFile.modifyData(ReadFile.java:118)
	at ReadFile.main(ReadFile.java:57)

[Wayan Saryada]

You need to use / import java.util.Date instead of java.sql.Date in your code.

[Roopesh Rana]

Wayan Saryada wrote:You need to use / import java.util.Date instead of java.sql.Date in your code.

Roopesh Rana wrote:  I used java.util.Date as well as java.sql.Date also

Exception :

Exception in thread "main" java.lang.ClassCastException: java.time.format.Parsed cannot be cast to java.util.Date
	at ReadFile.modifyData(ReadFile.java:118)
	at ReadFile.main(ReadFile.java:57)

[Wayan Saryada]

I am sorry, I missed read that you modified your code

You might want to do the following if you are using Java 8 Date Time API:

LocalDateTime localDateTime = LocalDateTime.parse(cDate, formatter);
System.out.println("localDateTime = " + localDateTime);

[Campbell Ritchie]

Stop using the Date class.
Wayan Saryada is right. Use LocalDate or similar; see the Java™ Tutorials. Since Java8 came out over 3½ years ago, you most probably can use LocalDate.

I think you have managed to find the wrong forum and this discussion would fit better in a more general forum, so I shall move you.

[Tim Holloway]

Short answer. Don't feed a date string that's yyyy-mm-dddd to a date formatter that's expecting yyyy/mm/dd.

As has been mentioned, there are more civilised classes available now for date/time handling, but even the older stuff works just fine if you use them properly.