Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
-
Economics & Finance
Articles on Trending Technologies
Technical articles with clear explanations and examples
Java Program to format date with System.out.format
System.out.format is used in Java to format output.Firstly, create a Calendar object −Calendar calendar = Calendar.getInstance();Now, use theDate-Time conversion characters to get the date, month and year −System.out.format("%te %tB, %tY%n", calendar, calendar, calendar);The following is the complete example −Exampleimport java.util.Locale; import java.util.Calendar; public class TestFormat { public static void main(String[] args) { Calendar calendar = Calendar.getInstance(); System.out.format("%te %tB, %tY%n", calendar, calendar, calendar); } }Output22 November, 2018
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 MoreGet the Component Type of an Array Object in Java
In order to get the component type of an Array Object in Java, we use the getComponentType() method. The getComponentType() method returns the Class denoting the component type of an array. If the class is not an array class this method returns null.Declaration − The java.lang.Class.getComponentType() method is declared as follows -public Class getComponentType()Let us see a program to the get the component type of an Array Object in Java -Examplepublic class Example { public static void main(String[] args) { int[] array = new int[] {1, 2, 3}; // obtain the Class of ...
Read MoreGet the class name for various objects in Java
The getName() method is used to get the names of the entities such as interface, class, array class, void etc. that are represented by the class objects. These names are returned in the form of a string. The getPackage() method gets the package for the given class.A program that gets the class name for various objects is given as follows −Examplepackage Test; import java.io.IOException; import java.util.HashMap; public class Demo { public static void main(String args[]) throws IOException { Object obj = "string"; System.out.println("The class name is: " + obj.getClass().getName()); obj ...
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 MoreGet Canonical Name for a class in Java
The canonical name of a class can be obtained using the java.lang.Class.getCanonicalName() method. This method returns the canonical name of the underlying class and returns null if there is no canonical name for the underlying class.A program that demonstrates the getCanonicalName() method to obtain the canonical name is given as follows −Examplepackage Test; import java.lang.*; public class Demo { public static void main(String[] args) { Demo obj = new Demo(); Class c = obj.getClass(); System.out.println("The canonical name of the underlying Class is: " + c.getCanonicalName()); } }OutputThe canonical name ...
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 MoreUse reflection to create, fill, and display an array in Java
An array is created using the java.lang.reflect.Array.newInstance() method. This method basically creates a new array with the required component type as well as length.The array is filled using the java.lang.reflect.Array.setInt() method. This method sets the required integer value at the index specified for the array.The array displayed using the for loop. A program that demonstrates this is given as follows −Exampleimport java.lang.reflect.Array; public class Demo { public static void main (String args[]) { int arr[] = (int[])Array.newInstance(int.class, 10); int size = Array.getLength(arr); for (int i = 0; i
Read More