java 時間與字串之間的轉換

標籤：java   date   

1. long字串轉換成yyyy-MM-dd HH:mm:ss格式輸出

import java.text.SimpleDateFormat;import java.util.Date;//將long字串轉換成格式時間輸出public class LongToString {public static void main(String argsp[]){String time="1256006105375";Date date=new Date(Long.parseLong(time));SimpleDateFormat formatter=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");time=formatter.format(date);System.out.println(time);}}

2. 字串轉換成時間

import java.text.SimpleDateFormat;import java.util.Date;import ognl.ParseException;public class StringToDate {public static void main(String argsp[]) throws Exception{String time="2010-11-20 11:10:10";Date date=null;SimpleDateFormat formatter=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");date=formatter.parse(time);System.out.println(date);}}

3. 取得當前系統時間，返回yyyy-MM-dd HH:mm:ss字串

import java.text.SimpleDateFormat;import java.util.Date;public class StringToDate {public static void main(String argsp[]) throws Exception{Date date=new Date();SimpleDateFormat formatter=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");String time=formatter.format(date);System.out.println(time);}}

4. 取得當前系統時間，返回 HH:mm:ss字串

import java.text.SimpleDateFormat;import java.util.Date;public class StringToDate {public static void main(String argsp[]) throws Exception{Date date=new Date();SimpleDateFormat formatter=new SimpleDateFormat("HH:mm:ss");String time=formatter.format(date);System.out.println(time);}}

5.將20101125102503轉換成2010-11-25 10:25:03輸出

import java.text.SimpleDateFormat;import java.util.Date;public class StringToDate {public static void main(String argsp[]) throws Exception{String time="20101125102503";SimpleDateFormat formatter1=new SimpleDateFormat("yyyy-HH-dd HH:mm:ss");SimpleDateFormat formatter2=new SimpleDateFormat("yyyyHHddHHmmss");time=formatter1.format(formatter2.parse(time));System.out.println(time);}}

java 時間與字串之間的轉換