Practical Object-Oriented Programming in Java

Writing basic Java code is one thing, but how do you organize it into logical, reusable, and maintainable applications? This course bridges that gap by teaching you the fundamentals of Object-Oriented Programming (OOP), the paradigm that powers modern software development. You will move beyond simple procedural scripts and learn to think in terms of objects and classes. By the end of this course, you'll have the foundational skills to design and build well-structured Java programs that are easier to scale, test, and debug. What you'll learn: - Master the four pillars of OOP: encapsulation, inheritance, polymorphism, and abstraction. - Learn to define classes, manage state with attributes, and implement behavior with methods. - Apply inheritance to create class hierarchies and reduce code duplication effectively. - Understand how to use interfaces and abstract classes to design flexible and extensible systems. - Practice writing modern Java, including the use of records for concise data-carrier classes. - Implement fundamental exception handling to build more robust and reliable applications. - Write basic unit tests for your classes to verify their behavior and improve code quality. The course begins with the core concepts of objects and classes before progressively introducing key OOP principles through clear explanations and practical coding exercises. You'll build a solid mental model for designing software in an object-oriented way. This course is for beginners with a basic understanding of Java syntax (variables, loops, and methods) but no prior experience with object-oriented programming. No other prerequisites are required. Start learning how to build better software today.