The DateFormat class in Java provides several static methods for obtaining date format instances, including getInstance(), getDateTimeInstance(), getDateInstance(), and getTimeInstance(). It also defines several constants for specifying the length of the date/time format, such as FULL, LONG, MEDIUM, and SHORT. The format() method can then be used to format a date into a String using the returned DateFormat object.

1. DateFormat Class

2. getInstance
Format()
getDateTimeInstance
FULL
getDateInstance
LONG
getDateInstance(constant,loc
ale)
MEDIUM
getTimeInstance
SHORT
getTimeInstance
(constant,locale))
DEFAULT

3. getInstance
method : getInstance ();
return type : DateFormat
special : static
content :
Object
DateFormat
example : DateFormat
date_format =
DateFormat.getInstance ();

4. getDateTimeInstance
method : getDateTimeInstanc
e ();
return type : DateFormat
special : static
content :
Object
DateFormat
example : DateFormat
date_format =
DateFormat.getDateTimeInstance

5. getDateInstance
method : getDateInstance ();
return type : DateFormat
special : static
content :
Object
DateFormat
example : DateFormat
date_format =
DateFormat.getDateInstance ();

6. getDateInstance(constant,loc
ale)
method : getDateInstance (
constant, locale );
return type : getDateInstance
special : static
content :
Object
DateFormat
example : Locale locale = new
Locale ( "th", "TH" ); DateFormat
date_format =

7. getTimeInstance
method : getTimeInstance ();
return type : DateFormat
special : static
content :
Object
DateFormat
example : DateFormat
date_format =
DateFormat.getTimeInstance ();

8. getTimeInstance
(constant,locale))
method : getTimeInstance (
constant, locale );
return type : DateFormat
special : static
content :
Object
DateFormat
example : Locale locale = new
Locale ( "th", "TH" ); DateFormat
date_format =

9. Format()
method : format (
object_date );
return type : String
content :
example : DateFormat
date_format =
DateFormat.getInstance (); String
str_datetime =
date_format.format ( new Date ()

10. FULL
property : FULL;
return type : int
special : static
content :
example : Locale locale = new
Locale ( "th", "TH" ); DateFormat
date_format =
DateFormat.getDateInstance (
DateFormat.FULL, locale );

11. LONG
property : LONG;
return type : int
special : static
content :
example : Locale locale = new
Locale ( "th", "TH" ); DateFormat
date_format =
DateFormat.getDateInstance (
DateFormat.LONG, locale );

12. MEDIUM
property : MEDIUM;
return type : int
special : static
content :
example : Locale locale = new
Locale ( "th", "TH" ); DateFormat
date_format =
DateFormat.getDateInstance (
DateFormat.MEDIUM, locale );

13. SHORT
property : SHORT;
return type : int
special : static
content :
example : Locale locale = new
Locale ( "th", "TH" ); DateFormat
date_format =
DateFormat.getDateInstance (
DateFormat.SHORT, locale );

14. DEFAULT
property : DEFAULT;
return type : int
special : static
content :
example : Locale locale = new
Locale ( "th", "TH" ); DateFormat
date_format =
DateFormat.getDateInstance (
DateFormat.DEFAULT, locale );