Core Java

Core Java refers to the fundamental features of Java programming, which include the basic libraries and APIs that are essential for building any Java application. It consists of the core components of Java, such as: 1. Object-Oriented concepts (classes, objects, inheritance) 2. Java Standard Libraries (Java.io, Java.net, etc.) 3. Java Syntax and basic data structures Core Java is typically used to build desktop and small-scale applications. \boxed{\text{Core Java provides the essential building blocks of Java programming.}} % Quicktip

Core Java concepts are fundamental principles that form the basis of Java programming. These concepts enable developers to build structured, modular, and maintainable Java applications. 1. **Classes and Objects**: - **Class**: A class is a blueprint for creating objects. It defines the properties (attributes) and methods (behaviors) of objects. - **Object**: An object is an instance of a class, representing real-world entities with specific data. 2. **Inheritance**: - Inheritance allows one class (the child class) to inherit the properties and behaviors of another class (the parent class). It facilitates code reuse and makes the program more modular. 3. **Polymorphism**: - Polymorphism enables one interface (method) to be used for different data types. It can be achieved through **method overriding** (runtime polymorphism) and **method overloading** (compile-time polymorphism). 4. **Abstraction**: - Abstraction is the process of hiding the implementation details from the user and exposing only essential features. It can be implemented using **abstract classes** and **interfaces**. 5. **Encapsulation**: - Encapsulation is the bundling of data and methods that operate on that data within a single unit (class). It restricts direct access to some of the object's components and ensures data integrity.