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Programming Articles
Page 1577 of 2547
Checks if two calendar objects represent the same local time in Java
Use the == operator to compare two calendar objects.Let us first create the first calendar object and set date −Calendar date1 = Calendar.getInstance(); date1.set(Calendar.YEAR, 2040); date1.set(Calendar.MONTH, 10); date1.set(Calendar.DATE, 25); date1.set(Calendar.HOUR_OF_DAY, 11); date1.set(Calendar.MINUTE, 30); date1.set(Calendar.SECOND, 10);Now, the following is the second calendar object −Calendar date2 = Calendar.getInstance(); date2.set(Calendar.YEAR, 2040); date2.set(Calendar.MONTH, 10); date2.set(Calendar.DATE, 25); date2.set(Calendar.HOUR_OF_DAY, 11); date2.set(Calendar.MINUTE, 30); date2.set(Calendar.SECOND, 10);Let is now compare them using == and && operators −if(date1.get(Calendar.SECOND) == date2.get(Calendar.SECOND) && date1.get(Calendar.MINUTE) == date2.get(Calendar.MINUTE) && date1.get(Calendar.HOUR) == date2.get(Calendar.HOUR) && date1.get(Calendar.DAY_OF_YEAR) == date2.get(Calendar.DAY_OF_YEAR) && date1.get(Calendar.YEAR) == date2.get(Calendar.YEAR) ) { System.out.println("The local time for the calendar objects is same..."); } ...
Read MorePermutation and Combination in Java
Permutation and Combination are a part of Combinatorics. Permutation is the different arrangements that a set of elements can make if the elements are taken one at a time, some at a time or all at a time. Combination is is the different ways of selecting elements if the elements are taken one at a time, some at a time or all at a time.An example of this is given as follows −Permutation = factorial(n) / factorial(n-r); Combination = factorial(n) / (factorial(r) * factorial(n-r)); n = 5 r = 3 Permutation = 60 Combination = 10A program that demonstrates this ...
Read MoreDisplay localized month name with printf method in Java
To display localized method name in Java, use the ‘B’ conversion character.System.out.printf("Localized month : %TB", d);To display method name in lowercase, use the “%tb”System.out.printf("Localized month : %tB", d);Exampleimport java.util.Date; public class Demo { public static void main(String[] args) { Date d = new Date(); System.out.printf("Morning/afternoon indicator: %tp", d); System.out.printf("Morning/afternoon indicator: %Tp", d); System.out.printf("Localized month : %tB", d); System.out.printf("Localized month : %TB", d); } }OutputMorning/afternoon indicator: pm Morning/afternoon indicator: PM Localized month : November Localized month : NOVEMBERRight justify and left justify values in ...
Read MoreDisplay the current method name in Java
The current method name that contains the execution point that is represented by the current stack trace element is provided by the java.lang.StackTraceElement.getMethodName() method.A program that demonstrates this is given as follows −Examplepublic class Demo { public static void main(String args[]) { System.out.println ("The method name is: " + new Exception().getStackTrace()[0].getMethodName()); } }OutputThe method name is: mainNow let us understand the above program.The method getMethodName() is used to obtain the current method name that contains the execution point that is represented by the current stack trace element. This is printed using System.out.println(). ...
Read MoreArgument Index in Java
Argument indices allow programmers to reorder the output. Let us see an example.Examplepublic class Demo { public static void main(String[] args) { System.out.printf("Before reordering = %s %s %s %s %s %s", "one", "two", "three", "four", "five", "six" ); System.out.printf("After reordering = %6$s %5$s %4$s %3$s %2$s %1$s", "one", "two", "three", "four", "five", "six" ); System.out.printf("Before reordering = %d %d %d", 100, 200, 300); System.out.printf("After reordering = %2$d %3$d %1$d", 100, 200, 300); } }OutputBefore reordering = one two three four five six After reordering = six ...
Read MoreDays till End of Year in Java
To get the days until the end of the year, find the difference between the total days in the current year with the total number of passed.Firstly, calculate the day of the year.Calendar calOne = Calendar.getInstance(); int dayOfYear = calOne.get(Calendar.DAY_OF_YEAR);Now, calculate the total days in the current year 2018.int year = calOne.get(Calendar.YEAR); Calendar calTwo = new GregorianCalendar(year, 11, 31); int day = calTwo.get(Calendar.DAY_OF_YEAR); System.out.println("Days in current year: "+day);Find the difference and you will get the days until the end of the year.The following is the complete example.Exampleimport java.util.Calendar; import java.util.GregorianCalendar; public class Demo { public static void main(String args[]) ...
Read MoreDifferent Methods to find Prime Number in Java
A prime number is a number that is only divisible by one or itself. Some of the prime numbers are 2, 3, 5, 7, 11, 13 etc.Some of the different methods to find a prime number in Java are given as follows −Method 1 - Find if a number is prime without using a functionA program that finds if the given number is prime without using a function is given as follow −Examplepublic class Example { public static void main(String args[]) { int num = 11, flag=0; if(num == 0||num == 1) { System.out.println( num + " is not a prime number"); } else { for(int i = 2; i
Read MoreCreating String Object from Character Array in Java
Here is our character array.char[] ch = { 'T', 'E', 'S', 'T'};To create string object from the above character array is quite easy. Add the array to the string parameter as shown below −String str = new String(ch);Examplepublic class Demo { public static void main(String[] args) { char[] ch = { 'T', 'E', 'S', 'T'}; String str = new String(ch); System.out.println(str); } }OutputTEST
Read Moregetchar_unlocked() in C
The function getchar_unlocked() is deprecated in Windows because it is a thread unsafe version of getchar(). It is suggested not to use getchar_unlocked(). There is no stream lock check that’s why getchar_unlocked is unsafe. The function getchar_unlocked() is faster than getchar().Here is the syntax of getchar_unlocked() in C language,int getchar_unlocked(void);A program of getchar_unlocked() in C is as follows −Example#include int main() { char val; val = getchar_unlocked(); printf("Enter the character : "); printf("Entered character : %c", val); return 0; }OutputHere is the outputEnter the character : a Entered character : a
Read MoreCreating String Object from certain part of a character Array in Java
Here is our character array.char[] ch = { 'T', 'E', 'S', 'T', 'I', 'N', 'G'};Create string object from some part of a string using the following String constructor. Through this we are fetching substring “IN” from the character array.String str = new String(ch, 4, 2);Examplepublic class Demo { public static void main(String[] args) { char[] ch = { 'T', 'E', 'S', 'T', 'I', 'N', 'G'}; String str = new String(ch, 4, 2); System.out.println(str); } }OutputIN
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