【Java】【9】String Date Calendar之间的转换

前言：

1， Calendar 转化 String

2， Calendar 转化 Date

3，Date 转化 String

4，Date 转化 Calendar

5，String 转化 Calendar

6，String 转化 Date

7，Date 转化 TimeStamp

8，String 转化 TimeStamp

正文：

1， Calendar 转化 String

Calendar calendat = Calendar.getInstance();
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
String dateStr = sdf.format(calendar.getTime());

2， Calendar 转化 Date

Calendar calendar = Calendar.getInstance();
Date date = calendar.getTime();

3，Date 转化 String

Date date = new Date();
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
String dateStr = sdf.format(date);

4，Date 转化 Calendar

Date date = new Date()；
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);

5，String 转化 Calendar

String str = "2012-5-27";
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
Date date = sdf.parse(str);
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);

6，String 转化 Date

String str = "2012-5-27";
SimpleDateFormat sdf= new SimpleDateFormat("yyyy-MM-dd");
Date date= sdf.parse(str);

7，Date 转化 TimeStamp

Date date = new Date();
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String time = df.format(date);
Timestamp ts = Timestamp.valueOf(time);

8，String 转化 TimeStamp

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

参考博客：

1，[java]转:String Date Calendar之间的转换 - 祺祺怪怪的 - 博客园
https://www.cnblogs.com/qima/p/3652566.html