package com.chen.api.util;

import java.sql.Timestamp;

import java.text.ParseException;

import java.text.SimpleDateFormat;

import java.util.Calendar;

import java.util.Date;

/**

* @author : chen weijie

* @Date: 2019-05-16 14:46

*/

public class DateUtils {

public static void main(String[] args) throws ParseException {

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

// 1.Calendar 转化 String

Calendar calendat = Calendar.getInstance();

String dateStr = sdf.format(calendat.getTime());

// 2.String 转化Calendar

String str = "2012-5-27";

Date date = null;

try {

date = sdf.parse(str);

} catch (ParseException e) {

e.printStackTrace();

}

Calendar calendar = Calendar.getInstance();

calendar.setTime(date);

// 3.Date 转化String

dateStr = sdf.format(new Date());

// 4.String 转化Date

str = "2012-5-27";

date = sdf.parse(str);

// 5.Date 转化Calendar

calendar = Calendar.getInstance();

calendar.setTime(new java.util.Date());

// 6.Calendar转化Date

calendar = Calendar.getInstance();

date = calendar.getTime();

// 7.String 转成 Timestamp

Timestamp ts = Timestamp.valueOf("2012-1-14 08:11:00");

// 8.Date 转 TimeStamp

SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

String time = df.format(new Date());

ts = Timestamp.valueOf(time);

}

}