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How to get perfect UTC Time in java/android?

I am trying to get UTC time in my application but unfortunately every time I am getting my current emulator Date and Time Instead of UTC.
Tried,
Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
ZonedDateTime utcTime = ZonedDateTime.now(ZoneOffset.UTC);
DateTime now = DateTime.now(DateTimeZone.UTC);
My code:
//create UTC time
Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
System.out.println("DATETIME ==> " + cal.getTime());
ZonedDateTime utcTime = ZonedDateTime.now(ZoneOffset.UTC);
System.out.println("DATETIME = " + utcTime.format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")));
DateTime now = DateTime.now(DateTimeZone.UTC);
System.out.println("DATETIME = " + now);
Any help highly appreciated.

Try this code:
private String getCurrentDateTimeAccordingToUTC(String format) {
Date date = new Date(System.currentTimeMillis());
SimpleDateFormat simpleDateFormat = new SimpleDateFormat(format);
simpleDateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
return simpleDateFormat.format(date);
}
String date = getCurrentDateTimeAccordingToUTC("dd-MM-yyyy hh:mm:ss a");
Log.e("date--","inUTC--:"+date);

Convert current GMT time into CST timezone using java

I am trying to convert current GMT time to CST time using JDK8. But my code always returns the same time for both the timezones. I also verified getAvailableIDs() has "CST".
Calendar cal = Calendar.getInstance();
TimeZone timeZone = TimeZone.getTimeZone("GMT");
cal.setTimeZone(timeZone);
// System.out.println("GMT time = " + cal.getTime());
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
sdf.setTimeZone(timeZone);
String gmtDateStr = sdf.format(cal.getTime());
System.out.println("Formatted GMT time = " + gmtDateStr);
// To CST
SimpleDateFormat sdf2 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
TimeZone cst = TimeZone.getTimeZone("CST");
sdf2.setTimeZone(cst);
Date cstDate = sdf2.parse(gmtDateStr);
// System.out.println("PARSED CST DATE = " + cstDate);
Calendar cal2 = new GregorianCalendar();
cal2.setTime(cstDate);
cal2.setTimeZone(cst);
String cstDateStr = sdf2.format(cal2.getTime());
// System.out.println("cal2 time = " + cal2.getTime());
System.out.println("FORMATTED CST DATE = " + cstDateStr);
What is wrong here? Can any one provide me an answer?

You don't have to do all of this conversion to get time in your preferred timezone. You can simply do following..
Calendar cal = Calendar.getInstance();
TimeZone timeZone = TimeZone.getTimeZone("GMT");
cal.setTimeZone(timeZone);
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
sdf.setTimeZone(timeZone);
String gmtDateStr = sdf.format(cal.getTime());
System.out.println("Formatted GMT time = " + gmtDateStr);
// To CST
SimpleDateFormat sdf2 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
TimeZone cst = TimeZone.getTimeZone("CST");
sdf2.setTimeZone(cst);
System.out.println("FORMATTED CST DATE = " + sdf2.format(cal.getTime()));

Java 8 java.time doesn't find a zone identified by CST
ZoneId cst = ZoneId.of("CST");
results in java.time.zone.ZoneRulesException: Unknown time-zone ID: CST. This makes sense as there is Central Standard Time in North America, China Standard Time, and possibly other.
If you mean Central Standard Time in North America which is represented by America/Chicago:
ZoneId gmt = ZoneId.of("GMT");
ZoneId cst = ZoneId.of("America/Chicago");
ZonedDateTime gmtTime = ZonedDateTime.now(gmt);
ZonedDateTime cstTime = gmtTime.withZoneSameInstant(cst);

What is wrong with your code is all those calls to Calendar.getTime(). This returns a Date instance, and those objects do not have the concept of a time zone. So it is useless to set the time zone in the Calendar instances because you then discard that info when converting to Date.
Just specify the time zone in your formatter, as in Yogesh Badke's answer.

issue in converting the date from string to date type

below is the code I have used to add the number of days to the existing date..which gave me string output and I want that to be converted to Date format again...I have tried formating but it gave the out put -->
Date date = sdf.parse(dt);
sysout (date ) --giving me -- Mon May 05 00:00:00 PDT 2008
but I want it as YYYY-MM/DD
sdf.format(date) --Gives me 2008-05-05 which I am looking but it is a string object...but I want this to be converted to DATE type
String dt = "2008-01-01"; // Start date
System.out.println("start date "+dt);
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
Calendar c = Calendar.getInstance();
c.setTime(sdf.parse(dt));
c.add(Calendar.DATE, 125); // number of days to add
dt = sdf.format(c.getTime());
System.out.println("c.getTime() "+c.getTime());
System.out.println("end date "+dt);
Date date = sdf.parse(dt);
System.out.println("last but one date in DATE form -->" +date);
System.out.println("last formatted date in string form "+sdf.format(date));

You created the format right.
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
but you are using it incorrectly. you should use
sdf.format(your_unformated_date);

Here is a sample code that will convert date from String to Date type using SimpleDateFormat Class:
public static void convert()
{
String str="10:25:35";
SimpleDateFormat sdf=new SimpleDateFormat("hh:mm:ss");
System.out.println(sdf.format(str));
}

Timestamp conversion in java

I am converting timestamp to date format yyyy-MM-dd HH:mm:ss.SSS and I am using America/New_York as TimeZone. Whenever I convert the timestamp into the date it shows one hour less than usual date and time. How to resolve this in java?
Here's the code:
String timestamp = "1431941838000";
long time = Long.valueOf(timestamp);
Date currentDate = new Date(time);
DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
TimeZone zone = TimeZone.getTimeZone("America/New_York");
df.setTimeZone(zone);
String finale = df.format(currentDate);

Try to using EST to replace America/New_York like
TimeZone zone = TimeZone.getTimeZone("EST");
Updated
It's My Test code:
String timestamp = "1431941838000";
long time = Long.valueOf(timestamp);
Date currentDate = new Date(time);
DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
TimeZone zoneNewYork = TimeZone.getTimeZone("America/New_York");
df.setTimeZone(zoneNewYork);
String finale = df.format(currentDate);
System.out.println(finale);
TimeZone zoneEst = TimeZone.getTimeZone("EST");
df.setTimeZone(zoneEst);
finale = df.format(currentDate);
System.out.println(finale);
And My result as bellow:
2015-05-18 05:37:18.000
2015-05-18 04:37:18.000

You have an extra point in this line:
TimeZone zone = TimeZone.getTimeZone("America/New_York").;
// ^ here!!!
UPDATE if you dont get any error, the output must be the correct:
EST is UTC - 5 hours. America/New_York is EST in the winter and E*D*T in the summer, so check if String timestamp = "1431941838000"; is winter or summer...
This code works ok:
Calendar calNewYork = Calendar.getInstance();
calNewYork.setTimeZone(TimeZone.getTimeZone("America/New_York"));
System.out.println("Time in New York: " + calNewYork.get(Calendar.HOUR_OF_DAY) + ":"
+ calNewYork.get(Calendar.MINUTE));
Use this to check your time:
long timestamp = "1431941838000";
Calendar calNewYork = Calendar.getInstance();
calNewYork.setTimeZone(TimeZone.getTimeZone("America/New_York"));
calNewYork.setTime(new Date(timestamp));
System.out.println("Time in New York: " + calNewYork.get(Calendar.HOUR_OF_DAY) + ":"
+ calNewYork.get(Calendar.MINUTE));

How to parse "dd-MM" date format to get current year?"

I have to parse "17-Jun" format date using Java.But the problem is when I try to parse "dd-MM" format using SimpleDateFormat it is returning as "Wed Jun 17 00:00:00 IST 1970".Is it possible to get current(2014) year instead of 1970.
My result:
17/JUNE/1970
Expected result:
17/JUNE/2014

Have a look at this..
Calendar c = Calendar.getInstance();
c.set(Calendar.DATE, 17);
c.set(Calendar.MONTH, 5);
c.set(Calendar.YEAR, c.get(Calendar.YEAR));
Date date=new Date(c.getTimeInMillis());
SimpleDateFormat simpleDateformatter = new SimpleDateFormat("dd/mmm/yyyy");
String convertedDate = simpleDateformatter .format(date);
To get year you can just use
Calendar cal = Calendar.getInstance();
cal.get(Calendar.YEAR) will fetch you current year
Hope it helped... :)

Try this
Calendar c = Calendar.getInstance();
c.set(Calendar.DATE, 17);
c.set(Calendar.MONTH, 5);
c.set(Calendar.YEAR, c.get(Calendar.YEAR));
Date d=new Date(c.getTimeInMillis());
SimpleDateFormat formatter = new SimpleDateFormat("dd- mmm");
String conDate = formatter.format(d);

Do like this
Date date = new SimpleDateFormat("dd-MMM-yyyy").parse("17-Jun-"+ Calendar.getInstance().get(Calendar.YEAR));

You'll have to write a utility method, there isn't anything in SimpleDateFormat that will interpret a non-existant year as the current year. Something like this:
public static Date parseDate(String dateString) throws ParseException {
//determine current year
Calendar today = Calendar.getInstance();
int currentYear = today.get(Calendar.YEAR);
//parse input
SimpleDateFormat format = new SimpleDateFormat("dd-MMM");
Date parsed = format.parse(dateString);
// set current year on parsed value
Calendar cal = Calendar.getInstance();
cal.setTime(parsed);
cal.set(Calendar.YEAR, currentYear);
return cal.getTime();
}

Try this:
SimpleDateFormat dfDate = new SimpleDateFormat("dd-MM-yyyy");
java.util.Date d = null;
try {
d = dfDate.parse("17-Jun-"+ Calendar.getInstance().get(Calendar.YEAR));
} catch (java.text.ParseException e) {
e.printStackTrace();
}
System.out.println(""+d );
your problem will be solved.

java.time
In Java 8 you can do something like:
DateTimeFormatter dtf = DateTimeFormatter.ofPattern("d-MMM");
MonthDay md = MonthDay.parse("17-Jun", dtf);
LocalDate d = LocalDate.now().with(md);
System.out.println(d.getDayOfMonth());
System.out.println(d.getMonthValue());
System.out.println(d.getYear());

I guess the simplest way is to do this:
DateFormat dateFormat = new SimpleDateFormat("yyyy/MMM/dd");
Date date = new Date();
System.out.println("Time is: " + dateFormat.format(date) );
This gives you exactly what you want. also see
http://docs.oracle.com/javase/tutorial/i18n/format/simpleDateFormat.html

Little late, but if you really don't want to use Calendar at all - as I gather from your comments to the correct answers above - (not recommended with the usage of deprecated methods, but still):
SimpleDateFormat format = new SimpleDateFormat("dd-MMM");
Date date = format.parse("17-JUN");
date.setYear(new Date().getYear());
System.out.println(date);
Output:
Tue Jun 17 00:00:00 IST 2014

All answers given here are more or less correct, but I notice that one detail aspect is still overlooked, namely if the combination of day and months fits to current year (february 29 problem). So I would suggest a strict parsing like following:
String ddMMM = "17-Jun";
SimpleDateFormat sdf = new SimpleDateFormat("dd-MMM-yyyy");
sdf.setLenient(false); // in order to check for "29-Feb"
TimeZone tz = TimeZone.getDefault(); // or change to your specific time zone
Date date =
sdf.parse(ddMMM + "-" + new GregorianCalendar(tz).get(Calendar.YEAR));

Try,
String s2 = "Wed Jun 17 00:00:00 1970";
SimpleDateFormat sdf1 = new SimpleDateFormat("E MMM dd hh:mm:ss yyyy");
SimpleDateFormat sdf2 = new SimpleDateFormat("dd/MMM/yyyy");
try {
Date d1 = sdf1.parse(s2);
System.out.println(d1);
String s3 = sdf2.format(d1);
System.out.println("Before Changing :: "+s3);
Calendar cal = Calendar.getInstance();
cal.setTime(d1);
cal.add(Calendar.YEAR, 2014-1970);
d1 = cal.getTime();
String s4 = sdf2.format(d1);
System.out.println("After Changing :: "+s4);
} catch (ParseException e) {
e.printStackTrace();
}
Output
Before Changing :: 17/Jun/1970
After Changing :: 17/Jun/2014