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Articles by karthikeya Boyini
Page 77 of 143
Display Date Time in dd MMM yyyy hh:mm:ss zzz format in Java
Firstly, import the following Java packagesimport java.text.SimpleDateFormat; import java.util.Date;Now, create objectsDate dt = new Date(); SimpleDateFormat dateFormat;Displaying date in the format we want −dateFormat = new SimpleDateFormat("dd MMM yyyy hh:mm:ss zzz");The following is an example −Exampleimport java.text.SimpleDateFormat; import java.util.Date; public class Demo { public static void main(String args[]) { Date dt = new Date(); SimpleDateFormat dateFormat; dateFormat = new SimpleDateFormat("dd MMM yyyy hh:mm:ss zzz"); System.out.println("Date: "+dateFormat.format(dt)); } }OutputDate: 22 Nov 2018 07:53:58 UTC
Read MoreSet a duration in Java
To set a duration, let us declare two objects of Calendar classCalendar c1 = Calendar.getInstance(); Calendar c2 = Calendar.getInstance();Set a time for one of the calendar objectsc2.add(Calendar.HOUR, 9); c2.add(Calendar.MINUTE, 15); c2.add(Calendar.SECOND, 40);Now, find the difference between both the time. One would be the current time and another we declared above −long calcSeconds = (c2.getTimeInMillis() - c1.getTimeInMillis()) / 1000;The following is an example −Exampleimport java.util.Calendar; public class Demo { public static void main(String args[]) { Calendar c1 = Calendar.getInstance(); Calendar c2 = Calendar.getInstance(); // set hour, minute and second c2.add(Calendar.HOUR, 9); ...
Read MoreAdd seconds to current date using Calendar.add() method in Java
Import the following package for Calendar class in Java.import java.util.Calendar;Firstly, create a Calendar object and display the current date and time.Calendar calendar = Calendar.getInstance(); System.out.println("Current Date and Time = " + calendar.getTime());Now, let us increment the seconds using the calendar.add() method and Calendar.SECOND constant.calendar.add(Calendar.SECOND, 15);Exampleimport java.util.Calendar; public class Demo { public static void main(String[] args) { Calendar calendar = Calendar.getInstance(); System.out.println("Current Date = " + calendar.getTime()); // Add 15 seconds to current date calendar.add(Calendar.SECOND, 15); System.out.println("Updated Date = " + calendar.getTime()); } }OutputCurrent ...
Read MoreCopy characters from string into char Array in Java
Let’s say we have the following string.String str = "Demo Text!";To copy some part of the above string, use the getChars() method.// copy characters from string into chArray =str.getChars( 0, 5, chArray, 0 );The following is an example to copy characters from string into char Array in Java.Examplepublic class Demo { public static void main(String[] args) { String str = "Demo Text!"; char chArray[] = new char[ 5 ]; System.out.println("String: "+str); // copy characters from string into chArray str.getChars( 0, 5, chArray, 0 ); ...
Read MoreSet Date patterns with SimpleDateFormat in Java
The following pattern letters are defined (all other characters from 'A' to 'Z' and from 'a' to 'z' are reserved) for Date and Time in JavaReference − Oracle JavaLetterDate or Time ComponentPresentationExamplesGEra designatorTextADYYearYear1996; 96YWeek yearYear2009; 09MMonth in yearMonthJuly; Jul; 07WWeek in yearNumber27WWeek in monthNumber2DDay in yearNumber189DDay in monthNumber10FDay of week in monthNumber2EDay name in weekTextTuesday; TueUDay number of week (1 = Monday, ..., 7 = Sunday)Number1AAm/pm markerTextPMHHour in day (0-23)Number0KHour in day (1-24)Number24KHour in am/pm (0-11)Number0hHour in am/pm (1-12)Number12mMinute in hourNumber30sSecond in minuteNumber55SMillisecondNumber978zTime zoneGeneral time zonePacific Standard Time; PST; GMT-08:00ZTime zoneRFC 822 time zone-800XTime zoneThe above pattern letters are combined ...
Read MoreJava Program to display date with day name in short format
Firstly, set the format with SimpleDateFormat classFormat dateFormat = new SimpleDateFormat("EEE, dd/MM/yyyy");Above, the “EEE” is set to display the name of the day i.e. Monday, Tuesday, Wednesday, etc.Now, to display the date −String res = dateFormat.format(new Date());The following is an example −Exampleimport java.text.Format; import java.text.SimpleDateFormat; import java.util.Date; public class Demo { public static void main(String[] argv) throws Exception { Format dateFormat = new SimpleDateFormat("EEE, dd/MM/yyyy"); String res = dateFormat.format(new Date()); System.out.println("Date = " + res); } }OutputDate = Thu, 22/11/2018
Read MoreChange date formatting symbols in Java
For date formatting symbols, use the DateFormatSymbols class.Firstly, set weekdays using a string arrayString[] weekDays2 = { "", "monday", "tuesday", "wednesday", "thursday", "friday", "saturday", "sunday" };Now, set short week days withDateFormatSymbols mySymbols = new DateFormatSymbols(); mySymbols.setShortWeekdays(weekDays2);Get the date −dateFormat = new SimpleDateFormat("EEEE, dd MMM yyyy", mySymbols); System.out.println(dateFormat.format(new Date()));The following is an example −Exampleimport java.text.SimpleDateFormat; import java.text.DateFormat; import java.text.DateFormatSymbols; import java.util.Date; public class Demo { public static void main(String[] args) { String[] weekDays1 = { "", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday" }; String[] weekDays2 = { "", "monday", "tuesday", "wednesday", "thursday", "friday", ...
Read MoreJava program to print all distinct elements of a given integer array in Java
All distinct elements of an array are printed i.e. all the elements in the array are printed only once and duplicate elements are not printed. An example of this is given as follows.Array = 1 5 9 1 4 9 6 5 9 7 Distinct elements of above array = 1 5 9 4 6 7A program that demonstrates this is given as follows.Examplepublic class Example { public static void main (String[] args) { int arr[] = {1, 5, 9, 1, 4, 9, 6, 5, 9, 7}; int n = arr.length; ...
Read MoreJava Program to list Short Weekday Names
To list short weekday names, use the getShortWeekdays() from the DateFormatSymbols class in Java.DateFormatSymbols is a class for encapsulating localizable date-time formatting data.Get short weekday names in an arrayString[] days = new DateFormatSymbols().getShortWeekdays();Display the weekdayfor (int i = 0; i < days.length; i++) { String weekday = days[i]; System.out.println(weekday); }The following is an example −Exampleimport java.text.DateFormatSymbols; public class Demo { public static void main(String[] args) { String[] days = new DateFormatSymbols().getShortWeekdays(); for (int i = 0; i < days.length; i++) { String weekday = days[i]; System.out.println(weekday); } } }OutputSun Mon Tue Wed Thu Fri Sat
Read MoreJava Program to decrement a Date using the Calendar Class
Import the following package for Calendar class in Javaimport java.util.Calendar;Firstly, create a Calendar object and display the current dateCalendar calendar = Calendar.getInstance(); System.out.println("Current Date = " + calendar.getTime());Now, let us decrement the date using the add() method and Calendar.DATE constant. Set a negative value since we are decrementing the datecalendar.add(Calendar.DATE, -3);The following is an exampleExampleimport java.util.Calendar; public class Demo { public static void main(String[] args) { Calendar calendar = Calendar.getInstance(); System.out.println("Current Date = " + calendar.getTime()); // Decrementing date by 3 calendar.add(Calendar.DATE, -3); System.out.println("Updated ...
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