日期类

Posted on 2020-11-07 01:00  锦喵卫指挥使  阅读(54)  评论(0编辑  收藏  举报

** 日期类 **

package cn.czl.proxy;

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

public class Hello {

	public static void main(String[] args) throws ParseException {
		// 将字符串转化为日期
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Date date = sdf.parse("2000-12-16 16:52:39");
        System.out.println(date);
        Date date2 = new Date();
        System.out.println(date2);
        
        //获取当前毫秒数
        long t1=System.currentTimeMillis();
        System.out.println(t1);		
        
        //毫秒数转换为时间
        Date date3=new Date();
        date3.setTime(t1);
        System.out.println(date3);
        
        //时间格式化
        Date date4=new Date();
        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH-mm-ss");
        String fmDate=simpleDateFormat.format(date4);
        System.err.println(fmDate);
        //字符串格式时间获取毫秒数
        long time = simpleDateFormat.parse(fmDate).getTime();
        System.err.println(time);
        
	}

}

Sat Dec 16 16:52:39 CST 2000
Sat Nov 07 00:57:37 CST 2020
1604681857207
Sat Nov 07 00:57:37 CST 2020
2020-11-07 00-57-37
1604681857000

Copyright © 2024 锦喵卫指挥使
Powered by .NET 9.0 on Kubernetes