Java日期计算,推荐使用Calendar进行日期加减

Posted 2023-02-20 geek-wk

Java日期计算，推荐使用Calendar进行日期加减

Java code:

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

/*
* time add
*/
public static String calFullDate(Date date, int yearNum, int monthNum, int dateNum,int hourNum) 
        String result = "";
        try 
            SimpleDateFormat sd = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            Calendar cal = Calendar.getInstance();
            cal.setTime(date);
            cal.add(Calendar.MONTH, monthNum);
            cal.add(Calendar.YEAR, yearNum);
            cal.add(Calendar.DATE, dateNum);
            cal.add(Calendar.HOUR, hourNum);
            result = sd.format(cal.getTime());
         catch (Exception e) 
            log.error(e.getMessage(), e);
        
        return result;