Java string turn date or date to string

In the article, the API is SimpleDateFormat, it belongs to Java.text.SimpleDateFormat, so please remember import come in!

Usage: SimpleDateFormat SDF = new SimpleDateFormat ("Yyyy-mm-dd HH:mm:ss");

This line is the most important, it established the format of the conversion, YYYY is the full year, MM is the month, DD is the date, as for HH:mm:ss don't need me to explain it!

PS: Why some format uppercase, some format lowercase, it is afraid to avoid confusion, such as MM is the month, MM is the minute; HH is a 24-hour system, while HH is a 12-hour system.

1. String Turn date

2008-07-10 19:20:00 to convert it to a date, you can use date date = Sdf.parse ("2008-07-10 19:20:00");

2. Date-turn string

If you turn today's date into a string, you can use string str = Sdf.format (new date ());

The format of this string content resembles the 2008-07-10 19:20:00.

Through this API, we can turn the date into the string format we want, such as to export the date as July 10, 2008, so we can write:

SimpleDateFormat SDF = new SimpleDateFormat ("yyyy mm month DD day");

String str = sdf.format (new Date ());

STR will be exported in accordance with the format we have set.

A simple example with a good writing:

Import java.util.Date;
Import java.text.ParseException;
Import Java.text.SimpleDateFormat;

public class Convertdemo {

/**
* Date converted to string
* @param date 
* @return str/public
static String Dat　　 ETOSTR (date date) { 
simpledateformat format = new SimpleDateFormat ("Yyyy-mm-dd HH:mm:ss");
String str = format.format (date);
return str;
} 

/**
* String converted to date
* @param str
* @return Date
/public static date Strtodate (String str) {
c22/> simpledateformat format = new SimpleDateFormat ("Yyyy-mm-dd HH:mm:ss");
Date date = null;
try {
date = Format.parse (str);
catch (ParseException e) {
e.printstacktrace ();
} return
date;
}
public static void Main (string[] args) { 
Date date = new Date ();
SYSTEM.OUT.PRINTLN ("date-turn string:" + convertdemo.datetostr (date));
System.out.println ("String Turn Date:" + convertdemo.strtodate (convertdemo.datetostr

(date)); 
}