Java string to date or date to string

Java string to date or date to string article, with the API is SimpleDateFormat, it belongs to Java.text.SimpleDateFormat, so please remember import into

To!

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

This line is the most important, it establishes the format of the conversion, YYYY is the full ad year, MM is the month, DD is the date, as for HH:MM:SS

You don't need me to explain it again!

PS: Why some format uppercase, some format lowercase, that is afraid to avoid confusion, such as MM is the month, MM is divided; HH is 24 small

While HH is a 12-hour system.

1. String to date 2008-07-10 19:20:00 to turn it into 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 is similar to the 2008-07-10 19:20:00.

With this API, we can convert the date into the string format we want, for example, to export the date to 2008.

July 10, we can write this:

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

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

STR will output in accordance with the format we have set.

Attached is a simple example of 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 Datetostr (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) {      SimpleDateFormat format = new SimpleDateFormat ("Yyyy-mm-dd HH:mm:ss");    date date = null;    try {    date = Format.parse (str),   } catch (ParseException e) {  &nbs P E.printstacktrace ();   }    return date;
public static void Main (string[] args) {      Date date = new Date ();    SYSTEM.OUT.P Rintln ("Date to String:" + convertdemo.datetostr (date));    System.out.println ("String to date:" + convertdemo.strtodate (convertdemo.datetostr (date));   }

}

Java string to date or date to string