Chapter 7 - Java for Beginners Course

Welcome to the Course!
- Course Introduction
Chapter 1 - Building Blocks
- Quick introduction to Java
- Variables
- Classes And Objects
- Class Example - Defining a class
- Object Examples - Creating instances
- Java Application Example - Running our first app
- Accessing class members - The dot operator
- Packages - Organizing the code
Chapter 2 - Primitives and Operators
- Primitives
- Arithmetic Operators
- Assignment Operator
- Unary Operators
- Equality and Relational Operators
- Conditional Operators
Chapter 3 - Statements and Control Flow
- Expressions
- Statements
- If-Then Statement
- If-Then-Else Statement
- More If Statements
- Switch Statement
- While and Do-While Statements
- For Statement
- Branching Statements
- Exception Handling
Chapter 4 - First example project
- Example Project - A Simple Vending Machine
- Adding money
- Delivering Items
- Giving Change
Chapter 5 - Classes and Interfaces
- Introduction
- Access Level Modifiers
- Class Declaration - Class, Methods and Fields
- Class Declaration - Constructors
- Inheritance Basics
- Inheritance - Constructors
- Inheritance - Methods and Fields
- Polymorphism
- Abstract Classes and Methods
- Interfaces
- Static Class Members
- Class Composition
- Final Classes and Class Members
- Generic Classes
Chapter 6 - Base Object Behaviors
- Introduction
- Type Comparison
- Type Casting
- Object Equality - The Contract
- Object Equality - Common Pitfalls
- Object String Representation
- Garbage Collection
- Object Comparison
- Primitive Wrappers and Autoboxing
Chapter 7 - Data Structures
- Introduction
- Arrays - Declaration and Creation
- Arrays - Basic Operations
- Core Collection Interfaces
- List and ArrayList - Basic Operations
- ArrayList Internals
- Introduction to Hash Tables
- Map and HashMap - Basic Operations
- Set and HashSet - Basic Operations
Chapter 8 - Anonymous classes and lambdas
- Introduction
- Filtering a List
- Anonymous Classes
- Lambdas
- Built-in Functional Interfaces
Chapter 9 - Streams
- Introduction
- Creating Streams
- Intermediate Operations
- Terminal Operations
Chapter 10 - Console based I/O
- Console Output
- Console Input
Chapter 11 - Exception handling
- Try/Catch/Finally Syntax
- Return statement in try/catch blocks
- Throw and throws
- Multiple catch blocks
Chapter 12 - Second example project
- Example project - Vending machine with a CLI
- Defining our product class
- Defining our product catalog
- Defining our vending machine
- Defining our Command Line Interface (CLI)
- Putting everything together
- Example recap

Introduction

Data structures provide a way to work with collections of objects of a given type and manage them in memory. We’ll provide an introduction into 4 concrete types of data structures in Java and introduce some of the interfaces in the Java Collections framework.

In specific, this chapter will cover:

Arrays in Java
The enhanced-for loop
The core Java Collection interfaces
ArrayList
HashSet
HashMap

There are more implementations of data structures than the ones we’ll introduce in this chapter. You’ll find several more included in Java, and many more that you can find in third-party libraries.

Chapter 7 - Java for Beginners Course

Table of Contents

Welcome to the Course!

Chapter 1 - Building Blocks

Chapter 2 - Primitives and Operators

Chapter 3 - Statements and Control Flow

Chapter 4 - First example project

Chapter 5 - Classes and Interfaces

Chapter 6 - Base Object Behaviors

Chapter 7 - Data Structures

Chapter 8 - Anonymous classes and lambdas

Chapter 9 - Streams

Chapter 10 - Console based I/O

Chapter 11 - Exception handling

Chapter 12 - Second example project

Introduction