Working with Classes and Interfaces in Java

By Jim Wilson
This course provides you with everything you need to know to begin working with Java’s rich type system and serves as a strong foundation for all Java-based development environments including client-based, server-side, Android, and big data.
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Course info
Rating
(151)
Level
Beginner
Updated
May 21, 2020
Duration
4h 45m
Table of contents
Course Overview
Course Overview 1m
Understanding Java Classes and Objects
Introduction 1m Declaring Classes 4m Declaring the MathEquation Class 5m Using Classes 5m Creating an Array of Classes 5m Using the MathEquation Class 4m Encapsulation and Access Modifiers 5m Special References: this and null 4m Field Accessors and Mutators 3m Summary 3m
Implementing Class Constructors and Initializers
Introduction 1m Class Initial State 2m Field Initializers 2m Constructors 5m Constructor Chaining 4m Constructor Visibility 3m Adding Constructors to MathEquation 5m Initialization Blocks 6m Summary 2m
Using Static Members
Introduction 1m Static Members 3m Using Static Members 3m Enhancing MathEquation with Static Members 4m Static Imports 3m Static Initializers 3m Summary 2m
A Closer Look at Methods
Introduction 1m Passing Objects as Parameters 4m Changes to Objects Passed as Parameters 4m Overloading 2m Method Overloading Examples 4m Matching Method Calls to Overloads 3m Using Method Overloading in CalcEngine 7m Variable Number of Parameters 5m Summary 2m
Class Inheritance
Introduction 2m Getting Started with Inheritance 3m References to Derived Class Instances 3m Field Hiding 4m Method Overriding 4m Improving CalcEngine with Inheritance 7m Object Class 2m Object References 5m Equality 7m Summary 3m
More About Inheritance
Introduction 1m Special Reference: super 5m Preventing Inheritance and Method Overriding 3m Requiring Inheritance and Method Overriding 5m Inheritance and Constructors 7m Implementing Abstract Classes and Constructor Inheritance 5m Using Constructor Inheritance in CalcEngine 2m Summary 3m
Working with Enums
Introduction 1m Conditional Logic 4m Relative Comparisons and Common Methods 4m Representing Math Operations as Enums 4m Processing Interactive Input in CalcEngine 5m Enum Types Are Classes 5m Summary 2m
Creating Abstract Relationships with Interfaces
Introduction 2m Understanding Interfaces 4m The Comparable Interface 6m Generic Interfaces 2m Implementing Multiple Interfaces 6m Declaring an Interface 2m Adding and Implementing an Interface in CalcEngine 5m Using the Interface in CalcEngine 4m A New Implementation of the Interface 3m Adding a Default Method to an Interface 3m Summary 3m
Nested Types and Anonymous Classes
Introduction 3m Nesting Types for Naming Scope 4m Accessing a Nested Type 2m Inner Classes 5m Anonymous Classes 2m Using Anonymous Classes 6m Summary 3m
Description
Course info
Rating
(151)
Level
Beginner
Updated
May 21, 2020
Duration
4h 45m
Description

Java is one of the most popular and widely-used programming languages in the world. It is supported by billions of devices. Whether you are interested in client-based, server-side, Android, or big data development, understanding how to program in Java is a critical part of being successful. Java is a multiparadigm language with rich object-oriented features. In this course, Working with Classes and Interfaces in Java, you will learn to how to work effectively with the core of the Java type system: classes and interfaces. First, you will learn how to implement a class including class constructors, fields, getters/setters, and polymorphic methods. Next, you will explore class inheritance, method overloading, and abstract classes. Finally, you will discover how to work with Enums, interfaces, nested types, and anonymous classes. When you are finished with this course, you will have the foundational knowledge of working with classes and interfaces that will enable you to become a successful Java programmer.

About the author
Jim Wilson
About the author

Jim Wilson is president of JW Hedgehog, Inc., a consulting firm specializing in solutions for the Android, iOS, and Microsoft platforms. Jim has over 30 years of software engineering experience, with the past 15 years heavily focused on creating mobile device and location-based solutions.

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Section Introduction Transcripts
Section Introduction Transcripts

Course Overview
Hi, everyone. My name is Jim Wilson. Welcome to my course, Working with Classes and Interfaces in Java. I'm a managing partner of JWHH, LLC and have had the good fortune to have been a professional software developer for over 35 years. Hey, did you know that Java continues to be one of the most sought‑after programming language skills? Java is used to develop everything from smartphone apps, to websites, to server‑side processes, to the many smart device features that make up the Internet of Things. In addition, a recent survey listed Java as one of the five most important skills for data scientists and big data processing. To work effectively in any of these environments, you'll need to understand how to work with Java's core object‑oriented features, classes, and interfaces. And that's exactly what you'll learn in this course. Some of the major topics we cover include declaring and using classes, constructors and initializers, class inheritance, declaring and implementing interfaces, nested types, and anonymous classes. By the end of this course, you'll be ready to begin working in any of the many environments that rely on Java. Before beginning this course, you should already be familiar with the basics of the Java programming language. I hope you'll join me as we continue building our Java programming skills with the course, Working with Classes and Interfaces in Java, at Pluralsight.

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