Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
-
Economics & Finance
Object Oriented Programming Articles
Page 396 of 589
What are Java Records and How to Use them Alongside Constructors and Methods?
Introduction Java continually evolves to meet modern programming needs, and one of its newest features, Java Records, introduced in JDK 16, simplifies the task of modeling data. This article sheds light on Java Records, detailing how they work alongside constructors and methods to streamline your Java coding experience Understanding Java Records Java Records are a type of class that aims to simplify the representation of "plain data" in your applications. Essentially, they are immutable data carriers used to encapsulate a few final fields, termed 'components', along with methods to access them Before Records, developers had to write a substantial amount ...
Read MoreWeb Development Using Java Technology For Beginners
Introduction In the vibrant world of web development, Java remains one of the top programming languages that offer robust solutions for diverse projects. It is versatile, platform-independent, and packed with powerful features that make it ideal for developing dynamic, data-driven web applications. If you're just starting your web development journey, learning Java can be a game-changer. This comprehensive beginner's guide will provide a clear understanding of web development using Java technology. What is Java? Java is a high-level, object-oriented programming language designed with simplicity and versatility in mind. It was developed by Sun Microsystems (now Oracle Corporation) with the mantra ...
Read MoreWeb Browsers that support Java Applets and how to enable them
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 MoreVersion Enhancements in Exception Handling introduced in Java
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 MoreVariance in Java
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 MoreVariables in Java Do Not Follow Polymorphism and Overriding
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 Morevar keyword in Java
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 MoreHow to find duplicate elements in a Stream in Java
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 MoreValid variants of main() in Java
In Java, the main() method is the entry point from where the JVM begins program execution. If you've written a Java program, you're likely familiar with the traditional main() signature: public static void main(String[] args). However, did you know that there are several valid variants of the main() method in Java? This article delves into the versatility of main() in Java, showcasing its multiple valid formats and explaining their intricacies. The Canonical Main() Method Before delving into its public static void main(String[] args) In this format, public denotes that the method can be accessed from anywhere; static ...
Read MoreUsing throw, catch and instanceof to handle Exceptions in Java
Exception handling is a fundamental aspect of Java programming that enhances the robustness of applications and promotes a seamless user experience. Key to this is understanding how to effectively use the throw, catch, and instanceof keywords to manipulate exceptions in Java. In this article, we will delve into the usage of these three mechanisms and illustrate how they collaboratively handle exceptions in Java. Understanding Exceptions in Java In Java, an exception is an event that disrupts the normal flow of a program. It's an object which is thrown by a method and caught by another method. The Java system itself ...
Read More