package com.binary.string.test;
import java.sql.Timestamp;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
/**
* @author Administrator
* java工具类_日期工具类集合
*/
public class TimeConvertUtil {
/**
* 基本的常量配置
*/
//无格式时间戳 分为 14位 12位 10位 8位...等
public static final String TIMESTAMP_TIMEREGULAR="yyyyMMddHHmmss";
//标准日期格式 2017-01-01 19:30:29
public static final String GENERAL_TIMEREGULAR="yyyy-MM-dd HH:mm:ss";
/**
* 各种日期类型转换
*/
public static void timeType(){
System.out.println("Java Date日期格式____:"+new Date());
System.out.println("java 标准日期格式______:"+new SimpleDateFormat(GENERAL_TIMEREGULAR).format(new Date()));
//java的 new Date().getTime() 获取的是毫秒 而unix获取的是秒
System.out.println("java unix日期格式____:"+new Date().getTime()/1000L);
System.out.println("java timestamp日期格式:"+new Timestamp(System.currentTimeMillis()));
System.out.println("timestamp转date"+timestampToDate());
}
public static void main(String[] args) throws Exception {
//日期类型
timeType();
System.out.println("date转string___:"+dateToString(new Date()));
System.out.println("string转date____:"+strToDate("2017-01-01 19:23:12"));
System.out.println("date转long___:"+dateToLong(new Date()));
System.out.println("long转date ____:"+longToDate(dateToLong(new Date())));
System.out.println("calendar转string ____:"+calendarToStr());
System.out.println("Calendar转date______:"+calendarToDate());
System.out.println("date转canledar____:"+dateToCalendar(new Date()));
}
//date类型转string类型的格式
public static String dateToString(Date date){
SimpleDateFormat sdf=new SimpleDateFormat(GENERAL_TIMEREGULAR);
return sdf.format(date);
}
//string 类型date转 java Date
public static Date strToDate(String str) throws Exception{
SimpleDateFormat sdf=new SimpleDateFormat(GENERAL_TIMEREGULAR);
return sdf.parse(str);
}
//java date转long时间转换
public static long dateToLong(Date date){
return date.getTime();
}
//java long转date
public static Date longToDate(long longtime){
return new Date(longtime);
}
//calendar转string
public static String calendarToStr() {
Calendar calendar = Calendar.getInstance();
SimpleDateFormat sdf = new SimpleDateFormat(GENERAL_TIMEREGULAR);
return sdf.format(calendar.getTime());
}
//calendar转date
public static Date calendarToDate(){
Calendar calendar = Calendar.getInstance();
return calendar.getTime();
}
//date转calendar
public static Calendar dateToCalendar(Date date) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
return calendar;
}
//timestamp转date类型
public static Date timestampToDate(){
Timestamp ts = new Timestamp(System.currentTimeMillis());
Date date = new Date();
date =ts ;
return date;
}
}
//
运行结果
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