Object-Oriented Programming Concepts

What Is an Object?

What Is a Class?

What Is Inheritance?

What Is an Interface?

What Is a Package?

Questions and Exercises: Object-Oriented Programming Concepts

Language Basics

Variables

Primitive Data Types

Arrays

Summary of Variables

Questions and Exercises: Variables

Operators

Assignment, Arithmetic, and Unary Operators

Equality, Relational, and Conditional Operators

Bitwise and Bit Shift Operators

Summary of Operators

Questions and Exercises: Operators

Expressions, Statements, and Blocks

Questions and Exercises: Expressions, Statements, and Blocks

Control Flow Statements

The if-then and if-then-else Statements

The switch Statement

The while and do-while Statements

The for Statement

Branching Statements

Summary of Control Flow Statements

Questions and Exercises: Control Flow Statements

Classes and Objects

Classes

Declaring Classes

Declaring Member Variables

Defining Methods

Providing Constructors for Your Classes

Passing Information to a Method or a Constructor

Objects

Creating Objects

Using Objects

More on Classes

Returning a Value from a Method

Using the this Keyword

Controlling Access to Members of a Class

Understanding Instance and Class Members

Initializing Fields

Summary of Creating and Using Classes and Objects

Questions and Exercises: Classes

Questions and Exercises: Objects

Nested Classes

Inner Class Example

Summary of Nested Classes

Questions and Exercises: Nested Classes

Enum Types

Questions and Exercises: Enum Types

Annotations

Questions and Exercises: Annotations

Interfaces and Inheritance

Interfaces

Defining an Interface

Implementing an Interface

Using an Interface as a Type

Rewriting Interfaces

Summary of Interfaces

Questions and Exercises: Interfaces

Inheritance

Overriding and Hiding Methods

Hiding Fields

Using the Keyword super

Object as a Superclass

Writing Final Classes and Methods

Abstract Methods and Classes

Summary of Inheritance

Questions and Exercises: Inheritance

Generics

Introduction

Generic Types

Generic Methods and Constructors

Bounded Type Parameters

Subtyping

Wildcards

Type Erasure

Summary of Generics

Questions and Exercises: Generics

Packages

Creating and Using Packages

Creating a Package

Naming a Package

Using Package Members

Managing Source and Class Files

Summary of Creating and Using Packages

Questions and Exercises: Creating and Using Packages

Numbers and Strings

Numbers

The Number Classes

Formatting Numeric Print Output

Beyond Basic Arithmetic

Summary of Numbers

Questions and Exercises: Numbers

Characters

Strings

Converting Between Numbers and Strings

Manipulating Characters in a String

Comparing Strings and Portions of Strings

The StringBuilder Class

Summary of Characters and Strings

Questions and Exercises: Characters and Strings