Jananee Perera

Understanding Classes and Objects: A Guide to Creating Objects in OOP In this guide, we’ll explore the foundational concepts of classes and objects in object-oriented programming (OOP) and learn how to create objects in Java . What is a Class? A class is like a blueprint or template that defines the structure and behavior of objects. It specifies the properties (attributes) and methods (behaviors) that the objects will have. For example, consider a Person class. Every person has certain attributes, such as a name and age , and behaviors like talking or walking . We can represent these using a class in programming. Example: Person Class in Java In this example, the Person class defines two attributes (name, age) and two behaviors (talk, walk). What is an Object? An object is a specific instance created from a class. It represents a real-world entity, where the class acts as a blueprint, and the object is the actual instance built from that blueprint. For example, a Perso...

Java Programming Essentials : Core Concepts and Naming Standards Four Core Concepts Java, as an object-oriented programming language, is structured around four fundamental concepts: Variables , Methods , Objects , and Classes . These concepts form the foundation of every Java program. Java organizes these concepts into a hierarchy, where each concept plays a crucial role in building and managing the code. Illustration: Student Registration System To illustrate these concepts, consider a Student Registration System: 1. Class A class is a blueprint for creating objects. It defines properties (variables) and behaviours (methods) that the objects will have. Example: The Student class serves as the template for student objects. It includes attributes like name, studentId, grade, and methods such as registerForCourse(), payFees(), and submitAssignment(). 2. Object An object is an instance of a class. It embodies the specific values for the attributes defined by the class. Example:  I...

  How Java Became a Versatile Powerhouse in Tech Java is a high-level, object-oriented programming language known for its simplicity, cross-platform capabilities, and widespread use in various applications. Designed to be easy to learn, Java runs on any system with a Java Virtual Machine (JVM). Developed by  James Gosling   at  Sun Microsystems  and released in 1995, Java has become a cornerstone of modern software development. With its familiar C/C++ syntax, Java simplifies programming without sacrificing performance or scalability.Since Oracle acquired Java, it has continued to evolve, maintaining its relevance and robustness in the tech world. Key Characteristics of Java: Java is a High-Level Language Java uses commands close to human language, making it easier to write and understand code.  It abstracts hardware details, allowing developers to focus on coding without dealing with complex system internals.  Java is Simple Its straightforward desi...