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Java Articles
Page 83 of 450
Hexadecimal literal of type long in Java
Hexadecimal literal of type long is represented as − long hexLong = 0XABL; For Hexadecimal, the 0x or 0X is to be placed in the beginning of a number. Note − Digits 10 to 15 are represented by a to f (A to F) in Hexadecimal Example public class Demo { public static void main(String []args) { long hexLong = 0XABL; System.out.println("Hexadecimal literal of type long: "+hexLong); } } Output Hexadecimal literal of type long:171
Read MoreDefine integer literals as octal values in Java
Literals with a leading zero are octal literals. Any number prefixed with a 0 is considered octal. Octal numbers can only use digits 0-7, just like decimal can use 0-9, and binary can use 0-1. To define integer literals as octal value in Java is effortless. Here is the declaration and initialization. int myOct = 023; Example public class Demo { public static void main(String []args) { int myOct = 023; System.out.println(myOct); } } Output 19 Let us see another example. Example public class Demo { public static void main(String []args) { int myOct = 010; System.out.println(myOct); } } Output 8
Read MoreJava program to extract 'k' bits from a given position
Extraction of k bits from the given position in a number involves converting the number into its binary representation. An example of this is given as follows −Number = 20 Binary representation = 10100 k = 3 Position = 2 The bits extracted are 010 which represent 2.A program that demonstrates this is given as follows.Examplepublic class Example { public static void main (String[] args) { int number = 20, k = 3, pos = 2; int exNum = ((1 > (pos - 1)); System.out.println("Extract " + k + " ...
Read MoreTernary Operator in Java
A ternary operator uses 3 operands and it can be used to replace the if else statement. This can be done to make the code simpler and more compact.The syntax of the ternary operator is given as follows −Expression ? Statement 1 : Statement 2In the above syntax, the expression is a conditional expression that results in true or false. If the value of the expression is true, then statement 1 is executed otherwise statement 2 is executed.A program that demonstrates the ternary operator in Java is given as follows.Examplepublic class Example { public static void main(String[] args) { ...
Read MoreJava program to display Astrological sign or Zodiac sign for given date of birth
Each date of birth corresponds to a given Zodiac sign. A table that demonstrates these signs and their corresponding dates is given below −Zodiac SignDateAriesMarch 21 - April 19TaurusApril 20 - May 20GeminiMay 21 - June 20CancerJune 21 - July 22LeoJuly 23 - August 22VirgoAugust 23 - September 22LibraSeptember 23 - October 22ScorpioOctober 23 - November 21SagittariusNovember 22 - December 21CapricornDecember 22 - January 19AquariusJanuary 20 - February 18PiscesFebruary 19 - March 20A program that displays the Astrological sign or Zodiac sign for a given date of birth is given as follows.Examplepublic class Example { public static void main ...
Read MoreJava Program to flip a bit in a BigInteger
To flip a bit in a BigInteger in Java, use the flipBit() method. This method returns a BigInteger whose value is equivalent to this BigInteger with the designated bit flipped.Exampleimport java.math.*; public class Demo { public static void main(String[] args) { BigInteger one, two; one = new BigInteger("7"); one = one.flipBit(3); System.out.println("Result: " +one); } }OutputResult: 15Let us see another example.Exampleimport java.math.*; public class Demo { public static void main(String[] args) { BigInteger bi1, bi2; bi1 = new BigInteger("8"); ...
Read MoreJava Program to shift bits in a BigInteger
To shift bits in a BigInteger, use the shiftLeft() or shiftRight() method.shiftLeft() methodThe java.math.BigInteger.shiftLeft(int n) returns a BigInteger whose value is (this > n). Sign extension is performed. The shift distance, n, may be negative, in which case this method performs a left shift. It computes floor(this / 2n).Exampleimport java.math.*; public class Demo { public static void main(String[] args) { BigInteger one; one = new BigInteger("25"); one = one.shiftRight(3); System.out.println("Result: " +one); } }OutputResult: 3
Read MoreShift left in a BigInteger in Java
To shift left in a BigInteger, use the shiftLeft() method.The java.math.BigInteger.shiftLeft(int n) returns a BigInteger whose value is (this
Read MoreJava Program to Match Dates
Firstly, we have considered the following two dates.SimpleDateFormat s = new SimpleDateFormat("yyyy-MM-dd"); Date d1 = s.parse("2018-10-15"); Date d2 = s.parse("2018-11-10");Now, use the compareTo() method to compare both the dates. The results are displayed on the basis of the return value.if (d1.compareTo(d2) > 0) { System.out.println("Date1 is after Date2!"); } else if (d1.compareTo(d2) < 0) { System.out.println("Date1 is before Date2!"); } else if (d1.compareTo(d2) == 0) { System.out.println("Date1 is equal to Date2!"); } else { System.out.println("How to get here?"); }Exampleimport java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Date; public class Demo ...
Read MoreSubtract minutes from current time 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 decrement the minutes using the calendar.add() method and Calendar.MINUTE constant. Set a negative value since you want to decrease the minutes.calendar.add(Calendar.MINUTE, -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()); // Subtract 15 minutes from current date calendar.add(Calendar.MINUTE, -15); ...
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