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Iterating over the entries of a Java Map is a common task in programming, and there are several efficient ways to do so. In this blog post, we will explore some of the most commonly used methods and their advantages and disadvantages. 1. Using forEach() method The forEach() method is the most straightforward way to iterate over a Java Map. It is available in Java 8 and later versions. It allows you to execute a block of code for each…

Java provides several ways to generate random integers within a specific range. Here are some methods to generate random integers within a range in Java. Random numbers play a crucial role in many applications, from simulations and games to cryptography and security. In Java, generating random integers within a specific range is a common task that can be accomplished using various methods. Whether you are looking for a quick and simple solution or a more robust and functional approach, Java…

In this post, you will learn how to use a recursive method to calculate the factorial of a number in Java. A recursive method is one that executes itself recursively. Using Java, this recursive method is used to find the factorial of a given integer number. Java Program package in.yawin; public class FactorialRecursive { public static void main(String[] args) { int number = 6; int fact = fact(number); System.out.println("Factorial of " + number + " = " + fact); }…

In fibonacci series, next number is the sum of previous two numbers. Fibonacci series is a series in which the next number is the sum of the previous two numbers.  A number series is said to be a Fibonacci series if the sum of the previous two numbers is the next number. We'll look at how to write a Java programme to print the Fabanocci series in this post. The Fibonacci numbers will begin with 0. The fibonacci series' first two numbers…

In this article, we will define an Armstrong Number in Java. We'll look at how to determine whether a number is Armstrong or not, as well as its code. In Java coding interviews and academics, the Armstrong number programme is frequently asked. Armstrong Number In java, a number is considered an Armstrong number if the sum of its own digits raised to the power number of digits gives the number itself.  A positive m-digit number that is the sum of…

In this post, we'll look at how to write a java program to swap two numbers using third variable. The java program will swap the two given integer numbers using a local variable as a temporary variable. The reassigning variables are used to swap two numbers. The third variable is used as a buffer to hold a value while the values are swapped. Swap two numbers in java The following are the steps for swapping two numbers: Assign a to…

This post demonstrates how to determine whether a given number is odd or even without using the module operator. The given number is divided by two, with the decimals truncated, and then multiplied by two. If the given number is even, this logic returns the same number; otherwise, it returns a different number. Java Program package in.yawin; public class CheckOddOrEven { public static void main(String[] args) { int number = 12; boolean isEven = check(number); if (isEven) { System.out.println("The number…

In this post, we'll look at how to write a Java programme that checks whether a given string is a palindrome. A palindrome string is a string in which the reverse of a string is the same as the original string. A palindrome string is a string that remains the same whether read from left to right or right to left. The palindrome string can be read from both ends. When written backwards, palindrome strings remain unchanged. Palindrome String A…

In this post, we'll look at how to write a java program to swap two numbers without using third variable. The java program will swap the two given integer numbers without using a local variable as a temporary variable. The reassigning variables are used to swap two numbers. The two variables will be used to swap these numbers by using variable value addition and subtraction. Swap two numbers without using third variable in java The following are the steps for…

A palindrome is a number that remains the same when the digits of a number are reversed. Palindrome numbers are 121 and 14541, for example. The reversed number is the same as the given number if the digits of the palindrome numbers are reversed. Palindrome numbers are those listed below that remain the same when written in the opposite order. In this post, we’ll look at how to write a Java programme that checks whether a given number is a…

In this post, we'll look at how to create a Java programme that checks whether a number is even or odd. The whole numbers can be divided into odd and even numbers. Even numbers are divisible by two and have a remainder of zero. The last digits of even numbers are 0, 2, 4, 6, and 8. An odd number is one that can be divided by two but leaves a remainder of one. The last digits of odd numbers…