Date tool class (updated from time to time)

•   Common date operation tool classes

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

/**
 *  Time tools 
 * @author sed
 * @date 2022/6/12 11:39
 */
public class DateUtil {

    /**
     *  Get the time stamp of the specified time 
     * @param data
     * @return
     */
    public static int getTimeStampByDate(String data,String pattern){
        Date date = format(data, pattern);
        Long tm = date.getTime()/1000;
        return tm.intValue();
    }

    private static Date format(String str, String pattern) {

        DateFormat formatter = new SimpleDateFormat(pattern, Locale.ENGLISH);

        Date date = null;
        try {
            date = (Date) formatter.parse(str);
        } catch (ParseException e) {
            return null;
        }

        return date;
    }

    /**
     *  Get the current system timestamp 
     * @param pattern eg:yyyy-MM-dd HH:mm:ss,SSS
     * @return
     */
    public static int getSysTimeStamp(String pattern) {

        return getTimeStampByDate(formatSysTime(new SimpleDateFormat(pattern)),pattern);
    }

    private static String formatSysTime(SimpleDateFormat format) {

        String str = format.format(Calendar.getInstance().getTime());
        return str;
    }

    /**
     *  Date format string to date 
     * @param recoure    Date format string 
     * @param format     Date format 
     *                  <yyyy-MM-dd> <yyyy-MM-dd HH:mm:ss> <yyyy-MM-dd 00:00:00> <yyyy year MM month dd Japan  HH when mm branch >
     * @return
     */
    public static Date strToDate(String recoure, String format){
        try {
            SimpleDateFormat dateFormat = new SimpleDateFormat(format);
            return dateFormat.parse(recoure);
        } catch (ParseException e) {
            throw new RuntimeException("parse date error");
        }
    }

    /**
     *  Date to date format string 
     * @param date       date 
     * @param format     Date format 
     *                  <yyyy-MM-dd> <yyyy-MM-dd HH:mm:ss> <yyyy-MM-dd 00:00:00> <yyyy year MM month dd Japan  HH when mm branch >
     * @return
     */
    public static String dateToStr(Date date, String format){
        try {
            SimpleDateFormat dateTimeFormat = new SimpleDateFormat(format);
            return dateTimeFormat.format(date);
        } catch (Exception e) {
            throw new RuntimeException("parse date error");
        }
    }

    /**  Compare the difference between the two times by minutes  */
    public static double calcTimeMinute(Date date1, Date date2)
    {
        double minute = 0;
        double millisecond = date2.getTime() - date1.getTime();
        minute = millisecond / (60 * 1000);
        return minute;
    }

    /**
     *   Get the specified time   Before or after   A few minutes 
     * @param startTime   Specify time 
     * @param minute    minute 
     * @param type  -1  Time before   ,1  Time after 
     * @return
     */
    public static String getTimeByMinute(String startTime,int minute, String type ) {
        //String startTime = "2018-05-10 11:10:50";
        Date format = format(startTime, "yyyy-MM-dd HH:mm:ss");
        long time = format.getTime();
        if(type.equals("-1")){
            time = time - (minute * 60 * 1000);
        }else{
            time = time + (minute * 60 * 1000);
        }
        String resultTime = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(time);
        return resultTime;
    }

    /**  Increase time by minutes  **/
    public static Date addTimeMinute(Date date, Integer min)
    {
        return new Date(date.getTime() + min * 60000);
    }

    /**  Reduce time by minutes  **/
    public static Date reduceTimeMinute(Date date, Integer min)
    {
        return new Date(date.getTime() - min * 60000);
    }

    /**  Compare the two time scales  **/
    public static int compareTime(String dateOne, String dateTwo , String dateFormatType){

        DateFormat df = new SimpleDateFormat(dateFormatType);
        Calendar calendarStart = Calendar.getInstance();
        Calendar calendarEnd = Calendar.getInstance();
        try {
            calendarStart.setTime(df.parse(dateOne));
            calendarEnd.setTime(df.parse(dateTwo));
        } catch (ParseException e) {
            e.printStackTrace();
            return 100;
        }

        int result = calendarStart.compareTo(calendarEnd);
        if(result > 0){
            // dateOne Than dateTwo Big 
            result = 1;
        }else if(result < 0){
            // dateOne Than dateTwo Small 
            result = -1;
        }else{
            //  equal 
            result = 0 ;
        }
        return result ;
    }

    /**  Get the date format of yesterday  **/
    public static String getYesterday(){
        DateFormat dateFormat=new SimpleDateFormat("yyyy-MM-dd");
        Calendar calendar=Calendar.getInstance();
        calendar.set(Calendar.HOUR_OF_DAY,-24);
        String yesterdayDate = dateFormat.format(calendar.getTime());
        return yesterdayDate;
    }
}