Python, Java
Java Programming Language
Annotations in Java are a form of metadata that provide data about a program but are not part of the program itself. Introduced in Java 5, annotations allow developers to write cleaner, more expressive code. They can be used to give the compiler instructions, to be processed during runtime, or to be used by various …
REST (Representational State Transfer) API is a web service communication protocol that allows for interaction with RESTful web services. In Java, creating REST APIs can be achieved using various frameworks, with Spring Boot being one of the most popular due to its ease of use, configuration, and flexibility. Understanding REST API in Java A REST …
In Java, records are a special kind of class introduced in Java 14 as a preview feature and made stable in Java 16. Records provide a quick way of creating data-carrying classes without having to write boilerplate code. They are particularly useful in applications where you need to create classes that serve primarily as data …
Inheritance in Java allows classes to inherit properties and methods from other classes, promoting code reusability and establishing a hierarchical relationship between classes. This principle of Object-Oriented Programming (OOP) lets a subclass utilize fields and methods of its superclass, except for constructors, which are not inherited. Understanding Inheritance Superclass (Parent Class): The class whose features …
Polymorphism is a core concept in object-oriented programming (OOP) that allows objects of different classes to be treated as objects of a common superclass. It’s one of the four major OOP principles, alongside encapsulation, inheritance, and abstraction. Polymorphism in Java enables a single interface to be used for a general class of actions. The specific …
In Object-Oriented Programming (OOP) with Java, constructors play a crucial role in initializing new objects. A constructor in Java is a special type of method that is called automatically when an instance of a class is created. Its primary purpose is to initialize the newly created object. Key Characteristics of Constructors: Name: A constructor must …
In Java, the Map interface and HashMap class are fundamental components of the Java Collections Framework, providing a powerful way to store and manage key-value pairs. Map Interface The Map interface represents a collection that maps unique keys to values. A key is an object that you use to retrieve a value at a later …
Java unit testing is a critical part of the software development process, enabling developers to test individual units of source code to determine if they are fit for use. JUnit is one of the most popular frameworks for unit testing in Java. It provides annotations to identify test methods, assertions to test expected results, and …
Multithreading in Java is a core mechanism that allows for the concurrent execution of two or more parts of a program to maximize CPU utilization. Each part, known as a thread, operates independently within the program, enabling complex applications to perform multiple tasks simultaneously. Creating Threads in Java There are two primary ways to create …
Generics in Java enable classes, interfaces, and methods to operate on types specified by the client at the time of use. This feature brings stronger type checks at compile time, eliminates the need for type casting, and allows for more generalized and reusable code. Let’s delve into a comprehensive yet straightforward tutorial on Java generics …