Problem Statement Two matrices are identical if their number of rows and columns are equal and the corresponding elements are also equal. An example of this is given as follows. Input Matrix A = 1 2 3 4 5 6 7 8 9 Matrix B = 1 2 3 4 5 6 7 8 9 The matrices A and B are identical Output Both the matrices are identical Steps to check if two given matrices are identical Following are the steps to check if two given matrices are identical − Initialize two matrices by defining two ... Read More

We are given a String and our task is to write Java programs that count its words. A string is a class in Java that stores a series of characters enclosed within double quotes. To count words of the given strings, check whether the character at the current index is a whitespace (' ') or a letter. If it is whitespace and the next character is a letter. Then, increment the counter variable to specify we have encountered a word. Example Scenario: Input: "You are on Tutorials Point website"; Output: Number of words in the given string: 6 ... Read More

Two variables can be swapped in one line in Java. This is done by using the given statement. x = x ^ y ^ (y = x); where x and y are the 2 variables. A program that demonstrates this is given as follows − Example Live Demo public class Example { public static void main (String[] args) { int x = 12, y = 25; System.out.println("Original values of x and y"); System.out.println("x = " ... Read More

The total bits in a number can be counted by using its binary representation. An example of this is given as follows − Number = 9 Binary representation = 1001 Total bits = 4 A program that demonstrates this is given as follows. Example Live Demo public class Example { public static void main(String[] arg) { int num = 10; int n = num; int count = 0; while ... Read More

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.Example Live Demopublic class Example {    public static void ... Read More

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 Live Demo public class Demo { public static void main(String []args) { int myOct = 023; System.out.println(myOct); } } Output 19 Let us see another example. Example Live Demo public class Demo { public static void main(String []args) { int myOct = 010; System.out.println(myOct); } } Output 8

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 Live Demo 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

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 Here are some of the examples of hexadecimal integer literal declared and initialized as int. int one = 0X123; int two = 0xABC; Example Live Demo public class Demo { public static void main(String []args) { int one = 0X123; int two = 0xABC; System.out.println("Hexadecimal: "+one); System.out.println("Hexadecimal: "+two); } } Output Hexadecimal: 291 Hexadecimal: 2748

The System.out.format is used in Java to format output. Here, let’s say the following is our long. long val = 787890; To format, we have considered the following that justifies the output. System.out.format("%d%n", val); System.out.format("%9d%n", val); System.out.format("%+9d%n", val); System.out.format("%08d%n", val); System.out.format("%, 9d%n", val); The following is the complete example that displays the difference in output as well. Example Live Demo import java.util.Locale; public class Demo { public static void main(String []args) { long val = 787890; System.out.format("%d%n", val); ... Read More

To compare two Java long arrays in Java, use Arrays.equals() method. Let’s say we have the following long arrays. long[] arr1 = new long[] { 767, 568, 555, 897, 678 }; long[] arr2 = new long[] { 456, 756, 555, 999, 678}; long[] arr3 = new long[] { 767, 568, 555, 897, 678 }; Now, we can compare the equality of these arrays using the equals() method. Arrays.equals(arr1, arr2); Arrays.equals(arr2, arr3); Arrays.equals(arr1, arr3); The following is the complete example. Example Live Demo import java.util.*; public class Demo { public ... Read More