SimpleDateFormat sdfYMD = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); Calendar calendar = Calendar.getInstance(); calendar.set(Calendar.SECOND,0); //这是将当天的[秒]设置为0 calendar.set(Calendar.MINUTE,0); //这是将当天的[分]设置为0 calendar.set(Calendar.HOUR_OF_DA…

JAVA 时间差距,两个时间相差多少天,时,分,秒 package io; import java.text.DateFormat; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Date; /** * 时间相距 * * @author Ben * @version 1.0 * @date 2009-10-21 16:38:51 */ public class DateDi…

SQL Server中获取当前日期的年.月.日.时.分.秒数据: SELECT GETDATE() as '当前日期',DateName(year,GetDate()) as '年',DateName(month,GetDate()) as '月',DateName(day,GetDate()) as '日',DateName(dw,GetDate()) as '星期',DateName(week,GetDate()) as '周数',DateName(hour,GetDate()) as '时…

package demoone; import java.sql.Timestamp; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Calendar; import java.util.Date; import java.util.GregorianCalendar; import java.util.List; p…

最近在做统计相关的功能的时候涉及到了获取当天的开始和结束的时间戳.当月和当年的开始结束时间戳,特此记录,以作备忘. 相关代码 package com.lingyejun.authenticator; import java.time.Instant; import java.time.LocalDateTime; import java.time.ZoneId; import java.util.Calendar; import java.util.TimeZone; public class…

package com.zhaochao.utils; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; public class DataUill { public static void main(String[] args) { // TODO Auto-generated method stub System.out.println("当天24点时间:" +…

本文参考https://blog.csdn.net/u011809209/article/details/77236602 本文参考https://blog.csdn.net/yinshuomail/article/details/81624648 首先,你如果搜索“JAVA获取本机IP地址”,基本上搜到的资料全是无用的. 实际上的代码在复杂环境下是不准的 网上一个比较普遍的说法是InetAddress.getLocalHost().getHostAddress() 似乎很简单,但忽略了一个问题…

1: import java.util.Date; 2: 3: public class ShowTimeInterval{ 4: public void ShowTimeInterval(Date date1, Date date2) { 5: long lDate1 = date1.getTime(); 6: long lDate2 = date2.getTime(); 7: long diff = (lDate1 < lDate2) ? (lDate2 - lDate1) : (lDate…

两种方法 一种得到的是时间戳,一种得到是日期格式: 1.日期格式的 Calendar calendar = Calendar.getInstance(); calendar.setTime(new Date()); calendar.set(Calendar.HOUR_OF_DAY, 0); calendar.set(Calendar.MINUTE, 0); calendar.set(Calendar.SECOND, 0); Date zero = calendar.getTime(); 2.时…

public static final int YEAR_RETURN = 0;                    public static final int MONTH_RETURN = 1;                    public static final int DAY_RETURN = 2;                    public static final int HOUR_RETURN= 3;                    public stat…