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Programming Articles
Page 1576 of 2547
Conversion characters for date in Java
The following are the conversion characters for date-time −CharacterDescriptioncComplete date and timeFISO 8601 dateDU.S. formatted date (month/day/year)T24-hour timer12-hour timeR24-hour time, no secondsYFour-digit year (with leading zeroes)yLast two digits of the year (with leading zeroes)CFirst two digits of the year (with leading zeroes)BFull month namebAbbreviated month namemTwo-digit month (with leading zeroes)dTwo-digit day (with leading zeroes)eTwo-digit day (without leading zeroes)AFull weekday nameaAbbreviated weekday namejThree-digit day of year (with leading zeroes)HTwo-digit hour (with leading zeroes), between 00 and 23kTwo-digit hour (without leading zeroes), between 0 and 23ITwo-digit hour (with leading zeroes), between 01 and 12lTwo-digit hour (without leading zeroes), between 1 and 12MTwo-digit ...
Read MoreJava Program to convert a Primitive Type Value to a String
For converting a primitive type value to a string in Java, use the valueOf() method.Let’s say we want to convert the following double primitive to string.double val4 = 8.34D;For that, use the valueOf() method. It converts it into a string.String str4 = String.valueOf(val4);Examplepublic class Demo { public static void main(String[] args) { int val1 = 5; char val2 = 'z'; float val3 = 9.56F; double val4 = 8.34D; System.out.println("Integer: "+val1); System.out.println("Character: "+val2); System.out.println("Float: "+val3); System.out.println("Double: ...
Read MoreDisplay numbers with thousands separator in Java
To display number with thousands separator, set a comma flag.System.out.printf( "%,d",78567);The above would result.78, 567Let’s check for bigger numbers.System.out.printf( "%,d", 463758);The above would result.463,758Examplepublic class Demo { public static void main( String args[] ) { System.out.printf( "%,d", 95647 ); System.out.printf( "%,d", 687467 ); System.out.printf( "%,.2f", 7546.21 ); System.out.printf( "%,.2f", 463758.787 ); System.out.printf( "%,.2f", 123456.5 ); } }Output95,647 687,467 7,546.21 463,758.79 123,456.50
Read MoreDisplay nanoseconds with Java Date and Time Conversion Character
To display nanoseconds, use the ‘N’ Date and Time conversion specifier.System.out.printf("Nanoseconds = %tN", d);Exampleimport java.util.Date; public class Demo { public static void main(String[] args) { Date d = new Date(); System.out.printf("Nanoseconds = %tN", d); } }OutputNanoseconds = 092000000
Read MoreGet the name of a primitive type in Java
The getName() method is used to get the names of the entities such as primitive type, interface, class, array class, void etc. that represented by the class objects. These names are returned in the form of a string.A program that gets the name of a primitive type using getName() method is given as follows -Examplepublic class Demo { public static void main(String[] argv) throws Exception { String name1 = float.class.getName(); System.out.println(name1); String name2 = int.class.getName(); System.out.println(name2); String name3 = char.class.getName(); System.out.println(name3); ...
Read MoreDisplay the declared methods of java.lang.Math
The methods of the java.lang.Math class can be listed using the java.lang.Class.getDeclaredMethods() method. This method returns an array that contains all the Method objects with public, private, protected and default access. However, the inherited methods are not included. Also, the getDeclaredMethods() method returns a zero length array if the class or interface has no methods or if a primitive type, array class or void is represented in the Class object.A program that demonstrates this is given as follows −Exampleimport java.lang.reflect.Method; public class Demo { public static void main(final String[] args) { final Method[] methods = Math.class.getDeclaredMethods(); ...
Read Moreisspace() function in C++
The isspace() function is a predefined function in ctype.h. It specifies whether the argument is a whitespace character or not. Some of the whitespace characters are space, horizontal tab, vertical tab etc.A program that implements isspace() function by counting the number of spaces in a string is given as follows −Example#include #include using namespace std; int main() { char str[] = "Coding is fun"; int i, count = 0; for(i=0; str[i]!='\0';i++) { if(isspace(str[i])) count++; } cout
Read MoreGenerate Random double type number in Java
In order to generate Random double type numbers in Java, we use the nextDouble() method of the java.util.Random class. This returns the next random double value between 0.0 (inclusive) and 1.0 (exclusive) from the random generator sequence.Declaration - The java.util.Random.nextDouble() method is declared as follows −public float nextDouble()Let us see a program to generate random double type numbers in Java −Exampleimport java.util.Random; public class Example { public static void main(String[] args) { Random rd = new Random(); // creating Random object System.out.println(rd.nextDouble()); // displaying a random double value between 0.0 & 1.0 } ...
Read MoreC++ Program to Swap Numbers in Cyclic Order Using Call by Reference
Three numbers can be swapped in cyclic order by passing them to a function cyclicSwapping() using call by reference. This function swaps the numbers in a cyclic fashion.The program to swap numbers in cyclic order using call by reference is given as follows −Example#include using namespace std; void cyclicSwapping(int *x, int *y, int *z) { int temp; temp = *y; *y = *x; *x = *z; *z = temp; } int main() { int x, y, z; cout > y >> z; cout
Read MoreLocale-specific morning/afternoon indicator in Java
Locale-specific morning/afternoon indicator is the AM/PM marker indicator.Use the ‘p’ conversion character to display AM/PM.System.out.printf("Morning/afternoon indicator: %tp",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); } }OutputMorning/afternoon indicator: pm Morning/afternoon indicator: PM
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