In Java, nested classes and inner classes provide a way to group classes within another class, allowing for better organization of code and encapsulation of functionality. There are two types of nested classes: static nested classes and inner classes. Static Nested Classes A static nested class is a class declared as a static member of …
Garbage collection in Java is the automatic process by which the Java Virtual Machine (JVM) identifies and removes objects that are no longer reachable or in use by the program. The primary purpose of garbage collection is to reclaim memory occupied by objects that are no longer needed, freeing up resources and preventing memory leaks. …
In Java, the this keyword is a reference variable that is used to refer to the current object within a method or constructor. It is particularly useful in situations where instance variables and parameters have the same names, helping to distinguish between the two and avoid naming conflicts. Key Uses of the this Keyword Distinguishing …
Constructors in Java are special methods within a class that are used to initialize objects of that class. They have the same name as the class and do not have a return type, not even void. Constructors are automatically invoked when an object is created using the new keyword. Key Points about Constructors Name and …
In Java, classes and objects are fundamental concepts of object-oriented programming (OOP). A class is a blueprint for creating objects, which are instances of that class. Objects, in turn, encapsulate data and behaviour associated with a specific entity. Class Definition in Java In Java, a class is defined using the class keyword, followed by the …
OOP Concepts Scenario from Banking System In a banking system, Object-Oriented Programming (OOP) concepts are crucial for modeling and managing various aspects of the system. Here are OOP concepts applied to a banking system: Classes and Objects Account Class: Represents customer bank accounts. Each account is an object of this class. Customer Class: Represents bank …
Object-Oriented Programming (OOP) is a fundamental programming paradigm that has revolutionized the way software is developed, designed, and maintained. OOP provides a structured and organized approach to modelling real-world entities, their behaviours, and their interactions within computer programs. In this introduction, we will explore the core principles and concepts of OOP, its benefits, and its …
