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    <p>The simplest technique would be to use <code>DateFormat</code>:</p> <pre><code>String input = "Sat Feb 17 2012"; Date date = new SimpleDateFormat("EEE MMM dd yyyy", Locale.ENGLISH).parse(input); long milliseconds = date.getTime(); long millisecondsFromNow = milliseconds - (new Date()).getTime(); Toast.makeText(this, "Milliseconds to future date="+millisecondsFromNow, Toast.LENGTH_SHORT).show(); </code></pre> <p>A more difficult technique (that basically does what <code>DateFormat</code> does for you) involves parsing it yourself (this would <strong>not</strong> be considered <em>best practice</em>):</p> <pre><code>String input = "Sat Feb 17 2012"; String[] myDate = input.split("\\s+"); int year = Integer.parseInt(myDate[3]); String monthString = myDate[1]; int mo = monthString.equals("Jan")? Calendar.JANUARY : monthString.equals("Feb")? Calendar.FEBRUARY : monthString.equals("Mar")? Calendar.MARCH : monthString.equals("Apr")? Calendar.APRIL : monthString.equals("May")? Calendar.MAY : monthString.equals("Jun")? Calendar.JUNE : monthString.equals("Jul")? Calendar.JULY : monthString.equals("Aug")? Calendar.AUGUST : monthString.equals("Sep")? Calendar.SEPTEMBER : monthString.equals("Oct")? Calendar.OCTOBER : monthString.equals("Nov")? Calendar.NOVEMBER : monthString.equals("Dec")? Calendar.DECEMBER : 0; int day = Integer.parseInt(myDate[2]); Calendar c = Calendar.getInstance(); c.set(year, mo, day); long then = c.getTimeInMillis(); Time current_time = new Time(); current_time.setToNow(); long now = current_time.toMillis(false); long future = then - now; Date d = new Date(future); //TODO use d as you need. Toast.makeText(this, "Milliseconds to future date="+future, Toast.LENGTH_SHORT).show(); </code></pre>
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    1. COOr, you could use SimpleDateFormat to do it in 2 lines of code.
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    2. CO@dusktreader, if you are going to down vote and provide a new suggestion, you should at least provide code. My answer is very well thought out and provides a lot of working code. This certainly does not deserve a down vote, and your comment is not productive.
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    3. COThis is a classic example of a poor coding practice I see all the time. This functionality is provided in a very simple and clean interface. Rolling your own is anti-productive. I downvoted because I honestly felt that this was a poor answer, and I even commented to tell you why (which I didn't need to do). Here's the code, even though this is a dead topic that's been closed for half a year: DateFormat format = new SimpleDateFormat("EEE MMM dd yyyy"); long millis = format.parse("Sat Feb 17 2012").getTime();
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