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What is SimpleDateFormat in Java?
The java.text.SimpleDateFormat class is used to format and parse a string to date and date to string.
Parsing a date string
One of the constructors of this class accepts a String value representing the desired date format and creates SimpleDateFormat object. To parse/convert a string as a Date object
- Instantiate this class by passing desired format string.
- Parse the date string using the parse() method.
Example
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
public class Sample {
public static void main(String args[]) throws ParseException {
String date_string = "2007-25-06";
//Instantiating the SimpleDateFormat class
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-dd-MM");
//Parsing the given String to Date object
Date date = formatter.parse(date_string);
System.out.println("Date value: "+date);
}
}Output
Date value: Mon Jun 25 00:00:00 IST 2007
Retrieving a pattern string
The toPattern() method of this class returns the pattern string representing the format of the current object.
Example
import java.text.ParseException;
import java.text.SimpleDateFormat;
public class Demo {
public static void main(String args[]) throws ParseException {
SimpleDateFormat obj = new SimpleDateFormat();
String pattern = obj.toPattern();
System.out.println(pattern);
}
}Output
M/d/yy h:mm a
Parsing a date from text
The parse() method of this class accepts ParsePosition as a parameter along with date string and, parses date from a text.
Example
import java.text.ParseException;
import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.util.Date;
public class Sample {
public static void main(String args[]) throws ParseException {
String text = "Marriage date of Samrat is 2007-25-06";
//Instantiating the SimpleDateFormat class
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-dd-MM");
//Parsing date from the given text
ParsePosition pos = new ParsePosition(27);
Date date = formatter.parse(text, pos);
System.out.println("Date value: "+date);
}
}Output
Date value: Mon Jun 25 00:00:00 IST 2007
Updated on: 05-Feb-2021
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