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Articles by Shriansh Kumar
Page 3 of 22
Java Program to Check Armstrong Number
In number theory, an Armstrong number is a pattern-based number whose sum of each digit raised to the power of total number of digits is equal to the given number itself. This article aims to explain Java programs that checks whether the given number is Armstrong or not. How to Check Armstrong Number? To check whether a number is an Armstrong or not, first, determine the total number of digits and assume it 'n'. Then separate each digit and raise them to the power of 'n'. In the last step, calculate the power of each digit and add all ...
Read MoreJava program to check if a given number is perfect number
When the sum of factors of a given number (after discarding the given number) is equal to the number itself is called a perfect number. The sum of these divisors is known as the aliquot sum. Therefore, we can say that a number is perfect if it matches its aliquot sum. All known perfect numbers are even. Problem Statement In this article, we will create Java programs to check if a given number is perfect or not. Let's try to understand the given problem through some examples: Example Scenarios: Input: number = 496 Output: 496 is a perfect number ...
Read MoreJava program to check whether a number is even or odd
We are given an integer number as input, and our task is to write a Java program to check whether that number is even or odd. If a number is divisible by 2, then it is an even number otherwise, it is odd. To verify a given number is even or odd in Java, we can use 3 different ways one with the modulus operator (%), another with the bitwise AND operator (&), and a third one using a switch statement. Example Scenarios: Let's understand the problem statement with some example scenarios: Input: number = 45 Output: result = odd ...
Read MoreJava Program to Add Characters to a String
Java Program to Add Characters to a String Java provides different ways to add characters to a string. We can add characters in the beginning or at the end or at any position according to the need. In this article, we are going to see three different approaches to do so: Using '+' operator Using methods of StringBuffer and StringBuilder classes ...
Read MoreJava Program to Check if a given Class is a Local Inner Class
The nested class that is defined inside the body of a method or within a loop, like for and if, is called a local inner class. Before making a Java program to check whether a given class is a local inner class or not, we need to understand the concept of nested classes first. Let's discuss this in detail. Nested Class When we create a class within another class, it is referred to as a nested class. The nested classes share the same scope. It allows the grouping of similar classes and encapsulation (wrapping of similar functionalities in a single unit). ...
Read MoreJava Program to Add the nth Square Series
The sum of the nth squares series is a form of arithmetic progression where the sum of squares is arranged in a sequence with the initial term as 1, and n being the total number of terms. 12 + 22 + 32 + ... + n2 In this article, we will discuss a Java program to add the nth square series. But, before that, let's see an example scenario: Example Scenario: Input: num = 6 Output: sum = 91 It will be calculated as: 12 + 22 + 32 + 42 + 52 + 62 = 1 ...
Read MoreJava Program to Add Two Matrix Using Multi-Dimensional Arrays
For two given matrices, each of size m x n, we need to write a Java program to add them. Amatrix has a row and column arrangement of its elements. A matrix with m rows and n columns can be called as m x n matrix. Individual entries in the matrix are called elements and can be represented by a[i][j], which means that the element a is present at the ith row and jth column. Matrix is an example of multi-dimensional array. In Java, a multi-dimensional array is an array of arrays. It is used to store data within a ...
Read MoreJava Program to Compute Quotient and Remainder
Given an integer a and a non-zero integer d, our task is to write a Java program to compute the quotient and remainder. Quotient can be calculated using the formula "Quotient = Dividend / Divisor" and for remainder, use "Remainder = Dividend % Divisor". When a number, i.e., dividend, is divided by another number, i.e., divisor, the quotient is the result of the division, while the remainder is what is left over if the dividend does not divide completely by the divisor. Example Scenario Suppose our input is - Input1: Dividend = 50 Input2: Divisor = 3 The output ...
Read MoreJava Program to Categorize Taller, Dwarf and Average by Height of a Person
The given task is to categorize Taller, Dwarf, and Average by the Height of a Person. First of all, we need to define tall, dwarf, and average height of a person. Let us assume -A person with a height between 170cm to 195cm is considered taller.If his height is between 150cm and 195cm, he is considered taller.A person whose height is below 150cm is considered a dwarf.If his height is greater than 195cm, he is considered abnormal.Categorizing the Height of a Person in JavaTo categorize the Height of a Person, we need to compare his height with each range specified above. ...
Read MoreHow to handle the ArithmeticException (unchecked) in Java?\\n
Java ArithmeticException The ArithmeticException of java.lang package is an unchecked exception in Java. It is raised when an attempt is made to use a wrong mathematical expression in the Java program. An example of ArithmeticExeption is division by 0. If you divide two numbers and the number in the denominator is zero. The Java Virtual Machine will throw ArithmeticException. Example: Throwing ArithmeticException In the following Java program, we try a mathematical operation where we divide a number by 0. public class ArithmeticExceptionTest { public static void main(String[] args) { int a ...
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