![]() ![]() Use the questions and exercises presented in this section to test your understanding of objects, classes, inheritance, interfaces, and packages. Questions and Exercises: Object-Oriented Programming Concepts This section explains why this is useful, and introduces you to the Application Programming Interface (API) provided by the Java platform. Placing your code into packages makes large software projects easier to manage. What Is a Package?Ī package is a namespace for organizing classes and interfaces in a logical manner. This section defines a simple interface and explains the necessary changes for any class that implements it. When a class implements an interface, it promises to provide the behavior published by that interface. What Is an Interface?Īn interface is a contract between a class and the outside world. One attribute which distinguishes a Java programmer from a Senior Java programmer is a good understanding of JVM, Garbage Collection, and experience of performance tuning, and this is currently. ![]() ![]() This section explains how classes inherit state and behavior from their superclasses, and explains how to derive one class from another using the simple syntax provided by the Java programming language. Inheritance provides a powerful and natural mechanism for organizing and structuring your software. It intentionally focuses on the basics, showing how even a simple class can cleanly model state and behavior. This section defines a class that models the state and behavior of a real-world object. What Is a Class?Ī class is a blueprint or prototype from which objects are created. This lesson explains how state and behavior are represented within an object, introduces the concept of data encapsulation, and explains the benefits of designing your software in this manner. Software objects are often used to model the real-world objects that you find in everyday life. What Is an Object?Īn object is a software bundle of related state and behavior. It contains all the essential Java programming subjects - classes, threads, objects, collection, and language features. Each discussion focuses on how these concepts relate to the real world, while simultaneously providing an introduction to the syntax of the Java programming language. Head First Java Authors: Kathy Sierra & Bert Bates Cost: 38.50 Head First Java is referred to as the Java programming bible by most readers and is probably the best Java book for beginners. This lesson will introduce you to objects, classes, inheritance, interfaces, and packages. If you've never used an object-oriented programming language before, you'll need to learn a few basic concepts before you can begin writing any code. ![]()
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