How to extract date and time from a String Timestamp in java

date, datetime, java, mysql

Solution

Use `java.text.SimpleDateFormat` and `java.util.TimeZone`

Which timezone the date string is in? Replace the below `UTC` timezone with that timezone

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
sdf.setTimeZone(TimeZone.getTimeZone("UTC"));
Date date = sdf.parse("2014-02-15 05:18:08");

SimpleDateFormat sdf2 = new SimpleDateFormat("dd-MM-yyyy hh:mm:ss a");
sdf2.setTimeZone(TimeZone.getTimeZone("IST"));
String dateStr = sdf2.format(date); // Output: 15-02-2014 10:48:08 AM

Note: In which format the hour is in (24 hour/ 12 hour) in your input string? The above example assumes that it is in 24 hour format because there in no AM/PM info in the input string.

If the input string is also in 12 hour format then your input string should mention AM/PM info also such as `2014-02-15 05:18:08 PM`. In that case, modify the `sdf` to `new SimpleDateFormat("yyyy-MM-dd hh:mm:ss a")`

======================== Edited: =====================

To answer your next question in comment "How to extract date and time separately"...

SimpleDateFormat sdfDate = new SimpleDateFormat("dd-MM-yyyy");
sdfDate.setTimeZone(java.util.TimeZone.getTimeZone("IST"));

SimpleDateFormat sdfTime = new SimpleDateFormat("hh:mm:ss a");
sdfTime.setTimeZone(java.util.TimeZone.getTimeZone("IST"));

String dateStr = sdfDate.format(date);
String timeStr = sdfTime.format(date);

Problem

I am getting date and time as a `String` `TIMESTAMP` from MySQL from a server in such a format: ``` 2014-02-15 05:18:08 ``` What I want is to extract the Date in `DD-MM-YYYY` format and the time in `HH:MM:SS AM/PM` format. Also the timezone of this timestamp is different and I want it in Indian Timezone(IST). Remember the `timestamp` is of `String` datatype.

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