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Welcome to this comprehensive guide on web browsers that support Java applets and how to enable them. As one of the oldest technologies used for adding interactive content to web pages, Java applets are still occasionally encountered, even though the technology is considered outdated and many modern browsers no longer support it. This article aims to provide you with an understanding of how Java applets work with various web browsers and how to enable them. Understanding Java Applets Java applets are small applications written in the Java programming language and embedded in a web page. The primary purpose of a ... Read More
Welcome to this comprehensive guide on utilizing the ViewResolver interface in Spring MVC. As a core component of Spring's MVC framework, ViewResolver plays a pivotal role in mapping view names to actual views. Whether you're new to Spring MVC or looking to refresh your understanding, this article aims to provide a clear and detailed examination of ViewResolver Understanding ViewResolver in Spring MVC In the context of Spring MVC, the ViewResolver interface assists in mapping logical view names, returned by the Controller, to actual view objects, such as JSPs or Thymeleaf templates. It forms a bridge between the controller and the ... Read More
In the realm of Android app development, creating interactive and intuitive UI is crucial for an engaging user experience. One such tool in the Android developer's toolkit is the ViewPager2 widget. This article serves as a comprehensive guide on the implementation of ViewPager2 in Android, augmented with a hands-on example. Introduction to ViewPager2 ViewPager2 is a significant improvement over the original ViewPager library. It offers more flexible orientation support, right-to-left (RTL) layout support, and a better swipe feature, making it a go-to choice for creating swipeable or scrollable user interfaces. Setting up ViewPager2: A Step-by-Step Guide Let's dive into the ... Read More
The Android ViewPager widget is a vital component in building swipeable or scrollable user interfaces. It allows the user to flip left and right through pages of data, which is a common pattern seen in various applications today. In this comprehensive guide, we will explore how to use ViewPager with Fragments in Android, fortified with a practical example to facilitate your understanding. Introduction to ViewPager and Fragments Before we dive into the coding, let's understand the basics of ViewPager and Fragments − ViewPager − A layout manager that allows the user to flip left and right through pages of ... Read More
Exception handling in Java has undergone several enhancements over the years, with each version introducing new features to make error handling more robust, easier to use, and more efficient. This article provides a comprehensive overview of these improvements, focusing on the crucial enhancements introduced in each version. It serves as a one-stop guide to understand the evolution of exception handling in Java and highlights how to best utilize these features in modern programming. Java 1.0 The Foundations of Exception Handling The concept of exception handling was introduced in the very first version of Java. This initial implementation allowed developers ... Read More
Java, with its robust object-oriented programming features, offers a multitude of mechanisms for programmers to develop flexible and efficient code. One such concept, often overlooked but critically important, is variance. Understanding variance is crucial for mastering Java, especially when working with generics and collections. This article provides an in-depth exploration of variance in Java, covering its types - covariance, contravariance, and invariance - and their practical applications. Understanding Variance Variance refers to how subtyping between more complex types relates to subtyping between their components. In simpler terms, it determines how the type hierarchy of classes is preserved when these classes ... Read More
In the world of Object-Oriented Programming (OOP), polymorphism and overriding are key concepts that lend flexibility and dynamism to programming languages. Java, being a robust OOP language, fully supports these features. However, it's crucial to understand that these characteristics apply to methods in Java and not to variables. In this article, we will explore why variables in Java do not follow polymorphism and overriding, providing a deeper understanding of Java's variable behavior. Polymorphism in Java Polymorphism, a Greek word meaning "many forms, " is a fundamental concept of OOP. It allows objects of different types to be treated as objects ... Read More
Java is a statically-typed language known for its verbosity and strict type checking. However, with the release of Java 10, a new feature called Local-Variable Type Inference was introduced, bringing the var keyword to the language and changing the way Java developers code. This article will explore the var keyword, illustrating its use cases and discussing its implications for Java coding practices. Understanding 'var' in Java In Java, traditionally, we needed to explicitly declare the type of every variable we created. With the introduction of var in Java 10, this has changed. The var keyword allows you to declare ... Read More
Data validation is a critical component of any application development. It ensures that only high-quality data that adheres to predefined standards gets processed. Spring Boot, a renowned framework in the Java ecosystem, offers robust and straightforward validation methods that developers can leverage. This article provides a comprehensive look at how validation is conducted in Spring Boot applications, enabling you to implement these essential techniques effectively. Importance of Data Validation in Spring Boot In Spring Boot, as with any application, data validation is paramount. It involves ensuring that the data received aligns with certain criteria before it's processed. Examples of validation ... Read More
Finding duplicate elements in a stream of data is one of the common questions that is asked in Java interviews and even in the exams of many students. Java provides several ways to find duplicate elements, we will focus mainly on two ways: the first one is by using Set of Java Collection Framework and the other one is by using the built-in method of stream named Collections.frequency(). Java Program to find duplicate elements in a Stream Before discussing the different ways to get duplicate items from a collection of data, it is necessary to ... Read More