DateConversion.java

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;
import java.util.TimeZone;

public class DateConversion {
    public static String convertToFullDate(String date) {
        String newDate;
        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd", Locale.getDefault());
        try {
            Date d = dateFormat.parse(date);
            SimpleDateFormat timeFormat = new SimpleDateFormat("dd MMM", Locale.getDefault());
            newDate = timeFormat.format(d);
        } catch (ParseException e) {
            return "";
        }
        return newDate;
    }

    public static long getLongDate(String strDate) {
        long duration = 0;
        SimpleDateFormat timeFormat = new SimpleDateFormat("yyyy-MM-dd", Locale.getDefault());
        timeFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
        try {
            Date date = timeFormat.parse(strDate);
            duration = date.getTime();

        } catch (ParseException e) {
            e.printStackTrace();
        }
        return duration;
    }


    public static String convertDateToString(long milliSecond) {
        return convertDateToString(milliSecond, "yyyy-MM-dd");

    }

    public static String convertDateToString(Date date) {
        return getFormatedDate(date, "yyyy-MM-dd");

    }

    public static String getFormatedDate(Date date, String format) {
        SimpleDateFormat dateFormat = new SimpleDateFormat(format, Locale.getDefault());
        return dateFormat.format(date);
    }

    public static String convertTimeToString(int hours, int minutes, String format) {
        return convertDateToString(convertTimeToCalender(hours, minutes).getTimeInMillis(), format);
    }

    public static String convertDateToString(int year, int month, int date, String format) {
        return convertDateToString(convertDateToCalender(year, month, date).getTimeInMillis(), format);
    }


    private static Calendar convertDateToCalender(int year, int month, int date) {
        Calendar calendar = Calendar.getInstance();
        calendar.set(Calendar.DAY_OF_MONTH, date);
        calendar.set(Calendar.MONTH, month);
        calendar.set(Calendar.DAY_OF_MONTH, date);
        return calendar;
    }

    private static Calendar convertTimeToCalender(int hours, int minutes) {
        Calendar calendar = Calendar.getInstance();
        calendar.set(Calendar.HOUR_OF_DAY, hours);
        calendar.set(Calendar.MINUTE, minutes);
        return calendar;
    }

    public static String convertDateToString(long milliSecond, String format) {
        SimpleDateFormat timeFormat = new SimpleDateFormat(format, Locale.getDefault());
        return timeFormat.format(milliSecond);
    }
}