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Convert indian time zone to local time

In my app I am getting time from server in API in IST timezone, I want to show time in device's local time zone.
Below is my code for this but it seems its not working.
SimpleDateFormat serverSDF = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
SimpleDateFormat utcSDF = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
SimpleDateFormat localSDF = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
serverSDF.setTimeZone(TimeZone.getTimeZone("Asia/Calcutta"));
utcSDF.setTimeZone(TimeZone.getTimeZone("UTC"));
localSDF.setTimeZone(TimeZone.getDefault());
Date serverDate = serverSDF.parse(dateString);
String utcDate = utcSDF.format(serverDate);
Date localDate = localSDF.parse(utcDate);
From server I am getting time "2018-02-28 16:04:12" in IST and the code above displays "Wed Feb 28 10:34:12 GMT+05:30 2018".

The other answer uses GMT+05:30, but it's much better to use a proper timezone such as Asia/Kolkata. It works now because India currently uses the +05:30 offset, but it's not guaranteed to be the same forever.
If someday the government decides to change the country's offset (which already happened in the past), your code with a hardcoded GMT+05:30 will stop working - but a code with Asia/Kolkata (and a JVM with the timezone data updated) will keep working.
But today there's a better API to manipulate dates, see here how to configure it: How to use ThreeTenABP in Android Project
This is better than SimpleDateFormat, a class known to have tons of problems: https://eyalsch.wordpress.com/2009/05/29/sdf/
With this API, the code would be:
String serverDate = "2018-02-28 16:04:12";
DateTimeFormatter fmt = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
LocalDateTime istLocalDate = LocalDateTime.parse(serverDate, fmt);
// set the date to India timezone
String output = istLocalDate.atZone(ZoneId.of("Asia/Kolkata"))
// convert to device's zone
.withZoneSameInstant(ZoneId.systemDefault())
// format
.format(fmt);
In my machine, the output is 2018-02-28 07:34:12 (it varies according to the default timezone of your environment).
Although it seems complicated to learn a new API, in this case I think it's totally worth it. The new API is much better, easier to use (once you learn the concepts), less error-prone, and fix lots of problems of the old API.
Check Oracle's tutorial to learn more about it: https://docs.oracle.com/javase/tutorial/datetime/

Update: Check this answer by #istt which uses modern Java8 date-time api.
You don't need to change format in UTC first. You can simply use:
SimpleDateFormat serverSDF = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
SimpleDateFormat localSDF = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
serverSDF.setTimeZone(TimeZone.getTimeZone("Asia/Kolkata"));
localSDF.setTimeZone(TimeZone.getDefault());
String localDate = localSDF.format(serverSDF.parse(dateString));

Android 12 hours Time Format getting wrong

I am using
DateFormat dateFormat = new SimpleDateFormat("MM-dd-yyyy hh:mm a");
String dateAsString = dateFormat.format(gmt);
And getting String 06-06-2017 08:15 a.m.
Why I am getting a.m. instated of AM or PM?

The AM/PM/a.m. actually depends on the device. Try the same code on other devices and you might get to see a different result. If you need AM/PM only, then you need to do it manually by replacing the dots and converting it to uppercase.

It depends on the locale. If you use SimpleDateFormat (which you may not want to do, see below), I recommend you give it an explicit locale. The one you construct uses the device’s default, which explains why you get different results on different devices. If you want that, use new SimpleDateFormat("MM-dd-yyyy hh:mm a", Locale.getDefault()) so the reader knows you have thought about it. To make sure you get AM and PM, use for example new SimpleDateFormat("MM-dd-yyyy hh:mm a", Locale.ENGLISH).
Why would you not want to use SimpleDateFormat? I consider it long outdated since the much better replacement for the Java 1.0 and 1.1 classes came out with Java 8 in 2014. They have also been backported to Android Java 7 in the ThreeTenABP. Get this and write for example:
LocalDateTime gmt = LocalDateTime.of(2017, Month.JUNE, 6, 8, 15);
DateTimeFormatter dateTimeFormat = DateTimeFormatter.ofPattern("MM-dd-uuuu hh:mm a",
Locale.ENGLISH);
String dateAsString = gmt.format(dateTimeFormat);
The result is
06-06-2017 08:15 AM
To make explicit that the time is in GMT, you may use an OffsetDateTime with offset ZoneOffset.UTC.
Link: How to use ThreeTenABP in Android Project.

SQLite Datetime Conversion?

I m developing android application. I need to convert datetime into date. I want to convert '25-07-2013 11:44AM' (datetime) into '25-07-2013' (date).
I am trying this function to convert SELECT date('25-07-2013 11:44AM'), but it was not working.Please suggest some solution for this problem.

According to this page, it does not seem that am/pm times are supported in date SQLite function (this should be noted as h or K according to the date format specification of Java at least; also it is explicitly mentioned %H hour: 00-24). Maybe experiment if using 24 hour clock will not trigger the issue.

I am not sure if you are search for Java code or SQL code , but if it is Java code then solution could be this :
String date = "25-07-2014 11:44AM";
SimpleDateFormat dateFormat = new SimpleDateFormat("dd-MM-yyyy");
String newDate = dateFormat.format(dateFormat.parse(date));
System.out.println(newDate);
If in case your are looking for SQL code let me know I will share that as well.

get date format from given date in android

Hello i am new in android. Can anybody help me to find how i get date format Sun 15th July from 2012-07-15? I found examples but each of it is for various different date-formats. Please help me to find this.

try to get idea from my another answer in [Convert Date time in “April 6th, 2012 ” format][1]
[1]: Convert Date time in "April 6th, 2012 " format here you can only change the April to Sun and 2012 to month.
Like:-
DateFormatSymbols symbols = new DateFormatSymbols();
symbols.setShortWeekdays(new String[]{"Sun","Mon"....});
SimpleDateFormat format = new SimpleDateFormat("EE", symbols);
from this code you will get Days in "Sun,Mon,Tue..." Short Format
So pass this symbols in your SimpleDateFormat class.

date format in android

I am stuck in one date format
i want my date should look like this, 18th Mar 2011
and it can be 1st, 2nd,3rd that means i want to resolve for all the aspects
Plz help me out for this ASAP
Thanks in advance to all.

I think you want to change date in a 18th, 2nd, 1st, 3rd dated way, if i am not wrong then you can use simpleDateFormat class to convert date in different formats.
Before using SimpleDateFormat, just refer the SDK documentation: http://developer.android.com/reference/java/text/SimpleDateFormat.html.
To have day number with nd, th, rd (i.e. 2nd, 4th, 3rd, etc.), you can use:
F - day of week in month (Number) - 2 (2nd Wed in July)
(given in the documentation).
For example using SimpleDateFormat:
String dateStr = "03/08/2010";
SimpleDateFormat curFormater = new SimpleDateFormat("dd/MM/yyyy");
Date dateObj = curFormater.parse(dateStr);
SimpleDateFormat postFormater = new SimpleDateFormat("MMMM dd, yyyy");
String newDateStr = postFormater.format(dateObj);

This is the term you are looking for: Quantity Strings (Plurals)
here is a link for it in the documentation:
Plurals
Here is a link with examples:
Examples
And One more:
Android Pluralization not working, need help
Hope this helps. so you just need to reformat the string with the date by using the examples provided and thats it.