Conversion between java time and string

Conversion between java time and string

1. convert long string to yyyy-MM-dd HH: mm: ss format output

 

Import java. text. simpleDateFormat; import java. util. date; // convert the long String to the format time output 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. String Conversion to time

 

 

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. Obtain the current system time and return the string yyyy-MM-dd HH: mm: ss.

 

 

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. Get the current system time and return the HH: mm: ss string

 

 

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. Convert 20101125102503 to 10:25:03 output

 

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);}}