This Java code snippet demonstrates how to use the `Calendar`...
This Java code snippet demonstrates how to use the Calendar
class and formatted output with System.out.printf
. Here's what it does:
-
Create an Instance of
Calendar
:
Calendar cal = Calendar.getInstance();
This creates an instance of theCalendar
class initialized with the current date and time of the system. -
Print the Current Date and Time:
System.out.printf("The current date and time is: %tc\n\n", cal);
This uses the format specifier%tc
to print the current date and time in a default locale-specific format. -
Set a Custom Date and Time:
cal.set(1956,9,8,5,30,12);
This sets the calendar objectcal
to a specific date and time: October 8, 1956, at 5:30:12 AM.
(Note: The months in theCalendar
class are zero-based, so9
represents October, not September.) -
Declare a String Variable:
String name = "Hitesh R. Pulimi";
This creates a string variablename
with the value"Hitesh R. Pulimi"
. -
Print a Formatted String with Details:
System.out.printf( "My name is %s.\nI was born at %Tr on a %tA,\nthe %te day of May in the year %tY", name, cal, cal, cal, cal );
This prints a string using various format specifiers to include the name, the time, the day, and other details about the date using the calendar:
%s
- Inserts thename
string (prints "Hitesh R. Pulimi").%Tr
- Formats the time to show "HH:MM:SS" in 24-hour clock format (uses the time set earlier: 5:30:12).%tA
- Prints the full name of the day (e.g., "Monday").%te
- Prints the day of the month as a number (e.g., "8" for October 8).%tY
- Prints the year in four digits ("1956").
NOTE: There appears to be an inconsistency in your code. The comment refers to "May," but the date set earlier is in October (month=9). This is likely an error in either the code or its commentary.
Example Output (assuming October 8, 1956):
The current date and time is: [Current system date, time]
My name is Hitesh R. Pulimi.
I was born at 05:30:12 on a Monday,
the 8th day of October in the year 1956
Key Notes:
- The
Calendar
class is part of thejava.util
package and is widely used for manipulating dates and times. System.out.printf
is a formatted print function similar toprintf
in C/C++.- The
%t
family of format specifiers is used for formatting date and time in Java.