Download to Date?

Problem Description:
How to format time in AM-PM format?
Solution:
This example formats the time by using SimpleDateFormat("HH-mm-ss a") constructor and
sdf.format(date) method of SimpleDateFormat class.
import java.text.SimpleDateFormat;
import java.util.Date;
public class Main{
public static void main(String[] args){
Date date = new Date();
String strDateFormat = "HH:mm:ss a";
SimpleDateFormat sdf = new SimpleDateFormat(strDateFormat);
System.out.println(sdf.format(date));
}
}
Result:
The above code sample will produce the following result.The result will change depending upon
the current system time
06:40:32 AM
Problem Description:
How to display name of a month in (MMM) format ?
Solution:
This example shows how to display the current month in the (MMM) format with the help of
Calender.getInstance() method of Calender class and fmt.format() method of Formatter class.
import java.util.Calendar;
import java.util.Formatter;
public class MainClass{
public static void main(String args[]){
Formatter fmt = new Formatter();
Calendar cal = Calendar.getInstance();
fmt = new Formatter();
fmt.format("%tB %tb %tm", cal, cal, cal);
System.out.println(fmt);
}
}
Result:
The above code sample will produce the following result.
October Oct 10
Problem Description:
How to display hour and minute ?
Solution:
This example demonstrates how to display the hour and minute of that moment by using
Calender.getInstance() of Calender class.
import java.util.Calendar;
import java.util.Formatter;
public class MainClass{
public static void main(String args[]){
Formatter fmt = new Formatter();
Calendar cal = Calendar.getInstance();
fmt = new Formatter();
fmt.format("%tl:%tM", cal, cal);
System.out.println(fmt);
}
}
Result:
The above code sample will produce the following result.The result will chenge depending upon
the current system time.
03:20
Problem Description:
How to display current date and time?
Solution:
This example shows how to display the current date and time using Calender.getInstance()
method of Calender class and fmt.format() method of Formatter class.
import java.util.Calendar;
import java.util.Formatter;
public class MainClass{
public static void main(String args[]){
Formatter fmt = new Formatter();
Calendar cal = Calendar.getInstance();
fmt = new Formatter();
fmt.format("%tc", cal);
System.out.println(fmt);
}
}
Result:
The above code sample will produce the following result.The result will change depending upon
the current system date and time
Wed Oct 15 20:37:30 GMT+05:30 2008
Problem Description:
How to format time in 24 hour format?
Solution:
This example formats the time into 24 hour format (00:00-24:00) by using sdf.format(date)
method of SimpleDateFormat class.
import java.text.SimpleDateFormat;
import java.util.Date;
public class Main {
public static void main(String[] args) {
Date date = new Date();
SimpleDateFormat sdf = new SimpleDateFormat("h");
System.out.println("hour in h format : "
+ sdf.format(date));
}
}
Result:
The above code sample will produce the following result.
hour in h format : 8
Problem Description:
How to format time in MMMM format?
Solution:
This example formats the month with the help of SimpleDateFormat(�MMMM�) constructor
and sdf.format(date) method of SimpleDateFormat class.
import java.text.SimpleDateFormat;
import java.util.Date;
public class Main{
public static void main(String[] args){
Date date = new Date();
SimpleDateFormat sdf = new SimpleDateFormat("MMMM");
System.out.println("Current Month in MMMM format : "
+ sdf.format(date));
}
}
Result:
The above code sample will produce the following result.The result will change depending upon
the current system date
Current Month in MMMM format : May
Problem Description:
How to format seconds?
Solution:
This example formats the second by using SimpleDateFormat(�ss�) constructor and
sdf.format(date) method of SimpleDateFormat class.
import java.text.SimpleDateFormat;
import java.util.Date;
public class Main{
public static void main(String[] args){
Date date = new Date();
SimpleDateFormat sdf = new SimpleDateFormat("ss");
System.out.println("seconds in ss format : "
+ sdf.format(date));
}
}
Result:
The above code sample will produce the following result.The result will change depending upon
the current system time.
seconds in ss format : 14
Problem Description:
How to display name of the months in short format?
Solution:
This example displays the names of the months in short form with the help of
DateFormatSymbols().getShortMonths() method of DateFormatSymbols class.
import java.text.SimpleDateFormat;
import java.text.DateFormatSymbols;
public class Main {
public static void main(String[] args) {
String[] shortMonths = new DateFormatSymbols()
.getShortMonths();
for (int i = 0; i < (shortMonths.length-1); i++) {
String shortMonth = shortMonths[i];
System.out.println("shortMonth = " + shortMonth);
}
}
}
Result:
The above code sample will produce the following result.
shortMonth
shortMonth
shortMonth
shortMonth
shortMonth
shortMonth
shortMonth
shortMonth
shortMonth
shortMonth
shortMonth
shortMonth
=
=
=
=
=
=
=
=
=
=
=
=
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Problem Description:
How to display name of the weekdays ?
Solution:
This example displays the names of the weekdays in short form with the help of
DateFormatSymbols().getWeekdays() method of DateFormatSymbols class.
import java.text.SimpleDateFormat;
import java.text.DateFormatSymbols;
public class Main {
public static void main(String[] args) {
String[] weekdays = new DateFormatSymbols().getWeekdays();
for (int i = 2; i < (weekdays.length-1); i++) {
String weekday = weekdays[i];
System.out.println("weekday = " + weekday);
}
}
}
Result:
The above code sample will produce the following result.
weekday
weekday
weekday
weekday
weekday
=
=
=
=
=
Monday
Tuesday
Wednesday
Thursday
Friday
Problem Description:
How to add time(Days, years , seconds) to Date?
Solution:
The following examples shows us how to add time to a date using add() method of Calender.
import java.util.*;
public class Main {
public static void main(String[] args) throws Exception {
Date d1 = new Date();
Calendar cl = Calendar. getInstance();
cl.setTime(d1);
System.out.println("today is " + d1.toString());
cl. add(Calendar.MONTH, 1);
System.out.println("date after a month will be "
+ cl.getTime().toString() );
cl. add(Calendar.HOUR, 70);
System.out.println("date after 7 hrs will be "
+ cl.getTime().toString() );
cl. add(Calendar.YEAR, 3);
System.out.println("date after 3 years will be "
+ cl.getTime().toString() );
}
}
Result:
The above code sample will produce the following result.
today is Mon
date after a
date after 7
date after 3
Jun 22 02:47:02 IST 2009
month will be Wed Jul 22 02:47:02 IST 2009
hrs will be Wed Jul 22 09:47:02 IST 2009
years will be Sun Jul 22 09:47:02 IST 2012
Problem Description:
How to display time in different country's format?
Solution:
Following example uses Locale class & DateFormat class to disply date in different Country's
format.
import java.text.DateFormat;
import java.util.*;
public class Main {
public static void main(String[] args) throws Exception {
Date d1 = new Date();
System.out.println("today is "+ d1.toString());
Locale locItalian = new Locale("it","ch");
DateFormat df = DateFormat.getDateInstance
(DateFormat.FULL, locItalian);
System.out.println("today is in Italian Language
in Switzerland Format : "+ df.format(d1));
}
}
Result:
The above code sample will produce the following result.
today is Mon Jun 22 02:37:06 IST 2009
today is in Italian Language in Switzerlandluned�,
22. giugno 2009
Problem Description:
How to display time in different languages?
Solution:
This example uses DateFormat class to display time in Italian.
import java.text.DateFormat;
import java.util.*;
public class Main {
public static void main(String[] args) throws Exception {
Date d1 = new Date();
System.out.println("today is "+ d1.toString());
Locale locItalian = new Locale("it");
DateFormat df = DateFormat.getDateInstance
(DateFormat.FULL, locItalian);
System.out.println("today is "+ df.format(d1));
}
}
Result:
The above code sample will produce the following result.
today is Mon Jun 22 02:33:27 IST 2009
today is luned� 22 giugno 2009
Problem Description:
How to roll through hours & months?
Solution:
This example shows us how to roll through monrhs (without changing year) or hrs(without
changing month or year) using roll() method of Class calender.
import java.util.*;
public class Main {
public static void main(String[] args) throws Exception {
Date d1 = new Date();
Calendar cl = Calendar. getInstance();
cl.setTime(d1);
System.out.println("today is "+ d1.toString());
cl. roll(Calendar.MONTH, 100);
System.out.println("date after a month will be "
+ cl.getTime().toString() );
cl. roll(Calendar.HOUR, 70);
System.out.println("date after 7 hrs will be "
+ cl.getTime().toString() );
}
}
Result:
The above code sample will produce the following result.
today is Mon Jun 22 02:44:36 IST 2009
date after a month will be Thu Oct 22 02:44:36 IST 2009
date after 7 hrs will be Thu Oct 22 00:44:36 IST 2009
Problem Description:
How to find which week of the year, month?
Solution:
The following example displays week no of the year & month.
import java.util.*;
public class Main {
public static void main(String[] args) throws Exception {
Date d1 = new Date();
Calendar cl = Calendar. getInstance();
cl.setTime(d1);
System.out.println("today is "
+ cl.WEEK_OF_YEAR+ " week of the year");
System.out.println("today is a "+cl.DAY_OF_MONTH +
"month of the year");
System.out.println("today is a "+cl.WEEK_OF_MONTH
+"week of the month");
}
}
Result:
The above code sample will produce the following result.
today is 30 week of the year
today is a 5month of the year
today is a 4week of the month
Problem Description:
How to display date in different formats ?
Solution:
This example displays the names of the weekdays in short form with the help of
DateFormatSymbols().getWeekdays() method of DateFormatSymbols class.
import java.text.*;
import java.util.*;
public class Main {
public static void main(String[] args) {
Date dt = new Date(1000000000000L);
DateFormat[] dtformat = new DateFormat[6];
dtformat[0] = DateFormat.getInstance();
dtformat[1] = DateFormat.getDateInstance();
dtformat[2] = DateFormat.getDateInstance(DateFormat.MEDIUM);
dtformat[3] = DateFormat.getDateInstance(DateFormat.FULL);
dtformat[4] = DateFormat.getDateInstance(DateFormat.LONG);
dtformat[5] = DateFormat.getDateInstance(DateFormat.SHORT);
for(DateFormat dateform : dtformat)
System.out.println(dateform.format(dt));
}
}
Result:
The above code sample will produce the following result.
9/9/01 7:16 AM
Sep 9, 2001
Sep 9, 2001
Sunday, September 9, 2001
September 9, 2001
9/9/01