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Articles by Alshifa Hasnain
Page 20 of 23
Java Integer compare() method
Integer compare() Method The compare() method in the Integer class is a part of the Java interface and is used to compare two integers. It provides a way to compare two Integer objects or primitive int values and determine their relative ordering. This method is particularly useful when sorting or working with collections that involve integer values. Syntax public static int compare(int x, int y);Where − x: The first integer to be compared. y: The second integer to be compared. Return Value The compare() method returns an integer value that ...
Read MoreJavaScript - Complementary Colors Builder
In this article, we will learn to build a JavaScript function that calculates the complementary color for a given hex color code. In web development working with colors and their relationships is an essential aspect of design and user interface. One of the concepts that designers often use is complementary colors—colors that are opposite each other on the color wheel, providing contrast and enhancing the visual appeal.You can try our Online Color Picker Tool to create new colors. Understanding Complementary Colors The following is the knowledge through which we understand complementary colors − Complementary ...
Read MoreJavaScript array sorting by level
In this article, we will learn array sorting by level in JavaScript, creating a hierarchical tree structure from a flat array is a common challenge when dealing with relational data. This is a common task when dealing with hierarchical data, such as organizational charts, category trees, or file systems, where relationships like parent-child need to be represented. Problem Statement We have an array of objects representing nodes with _id, level, and parentId properties. Our goal is to transform this array into a tree structure where nodes are nested as children under their respective parents. The elements with the highest level ...
Read MoreJava Program to mark the current position in this input stream
In this article, we will learn to mark and reset the current position in a file input stream in Java. Marking the current position in an input stream is a crucial functionality provided by Java’s InputStream class. It enables developers to reset the stream to a previously marked position, facilitating efficient data handling, especially in scenarios like re-reading or backtracking within a file. Key Concepts Following are the key concepts we need to know to mark the current position in this input stream − InputStream Class: The InputStream class is an abstract class that represents ...
Read MoreJava Program to convert Java Float to Numeric Primitive Data Types
The Float wrapper class provides methods to convert a Float object into various numeric primitive data types like short, int, float, and double in Java. This is particularly useful when handling float values and representing them in different numeric forms.This article will show two approaches to convert a Float object to numeric primitive types using the Float class methods. Using Float Wrapper Class Methods In this approach, we use predefined methods of the Float class, such as shortValue(), intValue(), floatValue(), and doubleValue(), to convert a Float object into various primitive types. These methods directly perform the required conversions. ...
Read MoreJavaScript Program to Find a triplet that sum to a given value
In this article, we will learn to find three numbers in an array that add up to a given sum value using JavaScript. We are going to write a JavaScript program to find a triplet that sums up a given value. This program will make use of nested loops to iterate over the input array and check for the existence of a triplet with a sum equal to the given value. We'll present two different approaches and analyze their implementations. Sorting and Two-Pointer Technique The first approach uses sorting and the two-pointer technique to solve the problem efficiently. This method ...
Read MoreJava Program to Perform nCr (rcombinations)
In this article, we'll learn to perform nCr (Combinations) in Java. In mathematics, nCr (combinations) is a crucial concept that helps determine how many ways you can choose r items from a set of n items, without considering the selection order. It is widely used in fields like probability, statistics, and combinatorics. What is nCr? The formula for calculating combinations (nCr) is − nCr = n! / (r! × (n - r)!) Where, n! = The factorial of n (product of all integers from 1 to n). r! = The factorial ...
Read MoreJava Program to get maximum value with Comparator
In Java, the Comparator interface is used to define a custom ordering for objects in various Collections. This can be particularly useful when you need to find the maximum or minimum element based on specific criteria rather than natural ordering. One common use case is finding the maximum value in a collection using a comparator. Java provides the Collections utility class, which includes the max() and min() methods that accept a comparator to perform customized comparisons. In this article, we will explore how to use these methods to find the maximum value from a list using a comparator. Finding Maximum ...
Read MoreJava Program to create a vertical ProgressBar
In this article, we will learn about creating a vertical progress bar using JProgressBar.VERTICAL in Java. Progress bars are essential for tracking task completion in GUI applications, and a vertical orientation can add a unique touch to your design. What is a Progress Bar in Java Swing? A progress bar is a visual component in Java Swing that indicates the progress of a task. It can be horizontal or vertical, depending on the application's design requirements. Java Swing provides the JProgressBar class to create and manage progress bars efficiently. Features of a Vertical Progress Bar The following are features of ...
Read MoreHow to add a new row to JTable with insertRow() in Java Swing
The JTable component in Java Swing is widely used for displaying and managing tabular data. Adding a new row dynamically to a JTable can enhance user interactivity, especially in applications that require real-time data manipulation. In this article we will tell you a step-by-step procedure, to use the insertRow() method to add a new row to a JTable, complete with a sample implementation and an algorithm. What is JTable in Java Swing? JTable is a Swing component used for displaying and editing tabular data. It is highly customizable and supports features like sorting, selection, and dynamic data manipulation, making it ...
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