import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.SimpleTimeZone;
import java.util.TimeZone;
 
class Ideone {
 
    public static void main(String[] args) throws ParseException {
 
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");
 
        format.setTimeZone(TimeZone.getTimeZone("UTC"));
        Date date1 = format.parse("2016-02-24T17:31:00Z");
        System.out.println(date1.getTime());
 
        format.setTimeZone(new SimpleTimeZone(SimpleTimeZone.UTC_TIME, "UTC"));
        Date date2 = format.parse("2016-02-24T17:31:00Z");
        System.out.println(date2.getTime());
 
    }
 
}

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