First, we use the SimpleDateFormat class to set the format of date and then get the date object using the parser method, then we use the geteTime method to add time with the date and get a timestamp as a result.
See the example below. In Java 8, it adds a new java. time package that contains several classes to deal with date and time.
Both classes and the other date-time classes I am using in this answer belong to the modern API known as java. time or JSR Or still better, take the output from LocalDate. parse and store it into a database column of datatype date. In both cases the procedure for converting from a LocalDateTime to an Instant is:.
This is fragile, though, since the time zone setting may be changed under our feet by other parts of your program or by other programs running in the same JVM. Validation : This method can be tested with those unit tests: with Junit5 and Hamcrest.
Usually, the string to parse comes with another format. A way to deal with it is to use a formatter to convert it to another format. Here is an example:. I'm sure the solution is that your oldDateString is something like "". Obviously this does not contain any time data lower than days.
If you format this string with your new formatter where should it get the minutes, seconds and milliseconds from? What you'll need to solve this, is the original timestamp incl.
time data before your first formatting. First, convert your date string to date , then convert it to timestamp by using the following set of line:. Stack Overflow for Teams — Start collaborating and sharing organizational knowledge. Create a free Team Why Teams? Learn more about Collectives. Learn more about Teams. Java: Convert String to TimeStamp Ask Question. Asked 8 years, 11 months ago.
Modified 11 days ago. Viewed k times. parse oldDateString ; SimpleDateFormat formatter. format d ; System. valueOf newDateString ; System. println ts ; and I get the following result. valueOf text ; System. println ts ; I get the right result: Thanks for the help. java date datetime timestamp.
Improve this question. edited Sep 5 at Sae 1, 14 14 silver badges 30 30 bronze badges. asked Sep 20, at Dimitra Micha Dimitra Micha 1, 7 7 gold badges 25 25 silver badges 30 30 bronze badges. Nothing is wrong. What do you expect in first case? You are creating timestamp from date so time part of timestamp is not set.
In second case you are creating timestamp from string where time is set. Just use two instances of Simple DateFormat, no need to fiddle with applyPattern.
GyroGearless I am not sure what do u mean? How is it possible not to ApplyPattern? Piro The wrong issue is that I have Timestamp uses it's own format and that format is correct and cannot be changed.
If you need to print formatted timestamp convert it from Timestamp back to Date and format it. Current answers seems to totally miss what you needed since your question is not obvious — Piro.
Show 3 more comments. Sorted by: Reset to default. Highest score default Trending recent votes count more Date modified newest first Date created oldest first. Timestamp parsedDate. Improve this answer. edited Jul 27, at Andre Kampling 5, 2 2 gold badges 16 16 silver badges 45 45 bronze badges. answered Sep 20, at ZaoTaoBao ZaoTaoBao 2, 2 2 gold badges 19 19 silver badges 28 28 bronze badges.
I tried what u suggested but it throws an Exception. Could I fix that? You should use HH to get "Hour in day " as in the question. Add a comment. import java.
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I have following timestamp string " The issue in parsing string through DateTimeFormatter is due to absence of time zone sign before last 4 digits. Logically it is yyyyMMddHH:mm:ss. and is time zone offset e. Not very elegant, but you could split the input by a dot. That would separate the datetime part from the offset and you can concatenate the desired and required sign with the value.
Maybe write a method that takes this input String and a sign to be applied as arguments. Since it seems not possible to parse an unsigned String representation of an offset, you would need something like the following:. The downside is the use of the TemporalAccessor interface, a low-level interface that we should not normally use in application code. I believe that the ParsePosition class is the only class from the old java.
text package that is reused in java. time, which I personally find curious. The answer by deHaar is correct. This answer shows an easier way of solving this problem. Note that the DateTimeFormatter needs to be adjusted accordingly. The benefits of using this alternative solution is as described in the following comment by Ole V.
Just speculating, maybe a minus sign would be present in case of a negative UTC offset. If so, maybe use strDateTime. Stack Overflow for Teams — Start collaborating and sharing organizational knowledge. Create a free Team Why Teams? Learn more about Collectives. Learn more about Teams. convert java timestamp string to java timestamp object Ask Question. Asked 1 year ago. Modified 1 year ago. Viewed times. How can I parse this string to Instant object? java date timezone-offset java.
instant datetimeformatter. Improve this question. edited Aug 30, at Ole V. asked Aug 30, at Kuldeep Singh Kuldeep Singh 23 2 2 bronze badges. Can't you just add the region to the date string? and is time zone offset How would Java know whether that offset were negative or positive? Add a comment. Sorted by: Reset to default. Highest score default Trending recent votes count more Date modified newest first Date created oldest first.
This requires you to know which sign to apply! The code cannot guess it Improve this answer. answered Aug 30, at deHaar deHaar g00se I can't Probably nobody can, but OP could use this example to create a method that passes the String and the desired sign. If OP wants the code to guess the sign, there won't be any possibility of it guessing right in every single case. ParsePosition There are two good answers already.
substring position. getIndex ; if Character. isDigit offsetString. atOffset offset. toInstant ; System. println timestamp ; Output: TZ The downside is the use of the TemporalAccessor interface, a low-level interface that we should not normally use in application code. Demo: import java. Instant; import java. OffsetDateTime; import java.
DateTimeFormatter; import java. ofPattern "uuuuMMddHH:mm:ssXXX", Locale. parse strDateTime, dtf. import java. ofPattern "uuuuMMddHH:mm:ss. XXX", Locale. println instant ; } } ONLINE DEMO The benefits of using this alternative solution is as described in the following comment by Ole V. Arvind Kumar Avinash Arvind Kumar Avinash I had done exactly this way in my first attempt but before posting it finally, I changed my mind.
Let me post it as an alternative solution. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. Not the answer you're looking for?
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