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Programming Articles
Page 1706 of 2547
Java Program to return the elements at the odd position in a list
What is the Odd Position in a List? In Java, a List does not have predefined odd and even positions. However, if one considers the first position as index 0, then an odd position in the given List would be any index that is not divisible by 2. To determine if a position is odd, use the modulo operator (%). How to Find Elements at Odd Position in a List? Below approaches are followed to find out the elements at the odd position in a list − By dividing index with 2 ...
Read MoreJava Program to Find the Perimeter of a Rectangle
For a given rectangle of length l and width w, write a Java program to find its perimeter. The Perimeter of a rectangle is calculated by adding the lengths of all the sides of the rectangle. Below is a demonstration of a rectangle, a quadrilateral with four right angles (90°). The perimeter of a rectangle is the total length of the two lengths and two widths of the rectangle − Example Scenario: Input: length = 5, 8, 5, 8; Output: Perimeter = 26 On adding all the sides of rectangle, you will get perimeter. 5+8+5+8 = 26 Steps ...
Read MoreJava Program to Check if JVM is 32 or 64 bit
In this article, we will learn how to determine whether the installed JVM in your system is 32 bit or 64 bit. For this operation, we use the getProperty() method of System class, which helps in retrieving system property of specified argument. In computer architecture, 32 bit and 64 bit refers to those components that operate on data in 32-bit units and 64-bit units respectively. 64 bit machines are said to be faster and more secure compare to the 32 bit machines. What is JVM? JVM is Java Virtual Machine that is responsible for executing the byte code. It is ...
Read MoreJava Program To Find all the Subsets of a String
In this article, we will understand how to find all the subsets of a string. In Java, String is a datatype that contains one or more characters and is enclosed in double quotes(“ ”). A part or a subset of string is called substring. Example Scenario: Input: string = JVM; Output: The subsets of the string are: J, JV, JVM, V, VM, M Finding all Subsets of a String in Java Use the following approaches to find all subsets of a String in Java − Using nested for Loop ...
Read MoreJava Program for Case Specific Sorting
Suppose you have a String that contains uppercase and lowercase characters both. We have to sort this given string in case specific order which means if the ith position in the given string had an uppercase letter then the newly sorted string must have uppercase letter at that position and same goes for lowercase letters. Also, both lowercase and uppercase letters will be in sorted order separately. In this article, we will try to find the solution for the given problem. First, let's understand the given problem with an example for better understanding. Example Scenario Input: String st = ...
Read MoreJava program to find all duplicate characters in a string
The duplicate characters in a string are those that occur more than once. In Java, String is a non-primitive datatype that contains one or more characters and is enclosed in double quotes(“ ”). As per the problem statement, we are given a string and our task is to write a Java program to find all the duplicate characters from that string. We can use for loop and nested for loop to solve this given problem. Example Scenario Input: String str = "Apple"; Output: duplicate_char = p; p is a duplicate character as it occurs more than once. Using ...
Read MoreJava Program to Compare Two Objects
To compare objects in Java, check the properties or the hash value of given objects. If the properties of both objects matches, then they are equal. If either property is different, it indicate that the objects are not equal. NOTE: Don't use equality operator (==) to compare objects as it checks only their memory location. Objects comparison should be done based on the properties not location. How to Compare Objects in Java? To compare two objects in Java, use the following approaches − By overriding equals() method Without overriding equals() method ...
Read MoreJava Program to Illustrate String Interpolation
String interpolation is a concatenation technique used to display output text dynamically or effectively by replacing the placeholder characters with variables (or strings in the subsequent examples). It restructures the code and prevents the need to repeatedly use variables to produce the output. It makes it efficient to write lengthy variable names or text just by replacing the placeholder with the variable names allocated to strings. String Interpolation in Java There are several ways in Java to perform String Interpolation with the help of the concatenation operator and library function or class. Here, we will discuss four different methods ...
Read MoreJava program to swap first and last characters of words in a sentence
Problem Statement Given a sentence, create a program in Java that swaps the first and last characters of each word efficiently as given below − Input That is a sample Output The string after swapping the last characters of every word is : thaT si a eampls Steps to swap first and last characters of words in a sentence Below are the steps to swap first and last characters of words in a sentence − Convert string to character array. Iterate through the character array using while loop to identify the ...
Read MoreJava Program to Get System IP Address in Windows and Linux Machine
IP Address, also known as the Internet Protocol Address is a unique identifier that is assigned to a device in a network to identify the devices in the network and establish a connection between them. In this section, we will learn how to find the IP Address of a Windows and Linux Machine using Java Code. The IP Address can be represented in two formats. One format is IPv4 which is a 32 format containing decimals and dots. It has two parts, one part is network ID which identifies the network and the other is host ID which identifies ...
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