In this video course, I use the IntelliJ IDEA development environment. To complete this course, you can use any Java development environment of your choice. However, if you want to use IntelliJ IDEA Ultimate Edition as your primary development environment, please use the form to request a 100% Discount Coupon code. In response, you will…
Read More Welcome to “Testing Java applications” video courseIn Swift, it is possible to inject a JavaScript code into a WKWebView and execute it from your app. In this tutorial, I will show you how to do it. Step 1: Load an HTML File from a Local File To load an HTML file from a local file in a WKWebView, you need to first…
Read More Inject JavaScript into WKWebViewIn this tutorial, I’m going to guide you through the process of zipping and unzipping files in Java. This is a common task in many programming and data management scenarios, and it’s a skill that can be incredibly useful in a variety of contexts. Throughout this tutorial, you’ll learn how to zip a single file,…
Read More Zip and Unzip Files in JavaProject Reactor is an open-source reactive library for building reactive applications in Java. It is part of the broader Reactive Streams initiative and provides an implementation of the Reactive Streams specification. Developed by Pivotal Software, Project Reactor has gained widespread adoption in the Java ecosystem due to its powerful abstractions and ease of use. At…
Read More Introduction to Project Reactor in JavaIn the ever-evolving world of software development, responsiveness and efficiency are paramount. Reactive Programming provides a powerful paradigm that allows you to build applications that are highly responsive, scalable, and resilient. In this tutorial, we will delve into the world of Reactive Programming in Java, exploring its key concepts and how it can benefit your…
Read More Introduction to Reactive Streams in JavaArrays and lists are fundamental data structures in Java that allow you to store collections of elements: Arrays: In Java, an array is a fixed-size, ordered collection of elements of the same type. It provides a contiguous block of memory to store the elements and allows direct access to each element using an index. Arrays…
Read More Convert an Array to a List in JavaIn Java, when we talk about pass-by-value and pass-by-reference, we are referring to how arguments are passed to methods. It is important to have a clear understanding of these concepts as they play a crucial role in Java programming. Understanding pass-by-value and pass-by-reference is crucial in Java programming because it helps prevent confusion and ensures…
Read More Java Pass-by-Value vs Pass-by-ReferenceIn Java programming, converting an int to a String involves transforming a numeric value of type int into its string representation. The string representation allows the number to be treated as a sequence of characters rather than a numerical value. This conversion is particularly useful when you need to concatenate the int value with other…
Read More Convert int to String in JavaJava Regex, also known as Regular Expression, is a powerful tool used for manipulating and managing strings. It consists of a sequence of characters that form a pattern, which can be used to match and locate specific strings within a larger text. In Java, regular expression functionality is provided through the java.util.regex package, which includes…
Read More Java Regex – Regular Expression ExamplesWhen working with Java programming, it is often essential to determine whether a given string represents a numeric value. This task is crucial for a variety of scenarios, such as validating user input, performing calculations, or processing data. By accurately identifying numeric strings, you can ensure the correctness and integrity of your application’s logic. The…
Read More Java: Check if String is NumericJSON (JavaScript Object Notation) has become a widely used data interchange format due to its simplicity, readability, and compatibility with various programming languages, including Java. It allows developers to represent structured data in a lightweight and human-readable format. In Java applications, JSON is commonly used for data storage, configuration files, and API communication. The objective…
Read More Java: Convert JSON to a MapAccessing elements from an ArrayList is a fundamental operation in Java programming. ArrayLists are commonly used to store and manage collections of objects dynamically. Being able to retrieve elements enables you to work with the data stored within the ArrayList effectively. Whether you need to display elements, perform calculations, or manipulate the data in any…
Read More How to Get an Element from an ArrayList in Java?In this tutorial, you will learn how to convert a JSON array to a Java list using a powerful Java library called Jackson. By the end of this tutorial, you will have a solid understanding of various methods available to achieve this conversion, allowing you to extract meaningful data from JSON arrays and leverage them…
Read More Convert JSON Array to Java List using JacksonThe purpose of this tutorial is to provide a comprehensive guide on updating keys in a HashMap in Java. As Java developers, we often encounter situations where we need to modify the keys associated with certain values in a HashMap. This tutorial aims to equip you with various methods and techniques to update keys efficiently…
Read More Java: Updating Keys in a HashMapIn Java, data types define the nature of variables and the kind of values they can hold. This is important because Java is a statically-typed language, which means that variables must be declared with their specific data types before they can be used. To accommodate this, Java provides a rich set of data types to…
Read More Convert Int to Long in Java