Conditionals | Java for Beginners: Your Easy Guide to Java Programming

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Java for Beginners: Your Easy Guide to Java Programming

By : Matthew Speake

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Java for Beginners: Your Easy Guide to Java Programming

By: Matthew Speake

Buy this Video

Overview of this book

Java is one of the most popular programming languages. Java is used for software development, mobile and web applications, cloud and big data projects, the Internet of Things, artificial intelligence, and much more. This highly-focused Java for beginners' course will stick to the most important skills that you need to learn Java quickly and efficiently. The instructor has broken down the essence of Java into bite-sized lessons to make it easy for anyone to understand and implement important concepts while learning. The course begins with setting up the environment, followed by first/basic steps, then you’ll learn about variables, expressions, strings, conditionals, loops, methods, classes and objects, exceptions, and collections. The last section is purely dedicated to the frequent questions asked by beginners in Java programming. By the end of this course, you will acquire substantial knowledge in Java programming to advance your career as a Java programmer. All the resource files are added to the GitHub repository at https://github.com/PacktPublishing/Java-for-Beginners-Your-Easy-Guide-to-Java-Programming

Introduction to the Course

Introduction

What is Programming?

The Tools You Need

Setting Up

Section Introduction

Installing the JDK on Windows

Setting Up Environment Variables on Windows

Installing IntelliJ IDEA on Windows

Installing the JDK on Mac

Setting Up Environment Variables on Mac

Installing IntelliJ IDEA on Mac

First Steps

Section Introduction

Creating a New Project

Creating and Loading a Template Project

Welcome to Your Challenge!

Challenge Part 1 - Exercise

Challenge Part 1 - Solution

Variables

Section Introduction

What are Variables?

Ints

Doubles

Booleans

Strings

Primitive Versus Class Types

Conclusion

Challenge Part 2 - Exercise

Challenge Part 2 - Solution

Expressions

Section Introduction

Numeric Expressions

Boolean Expressions

Simplifying Boolean Expressions

Logical Operators

Challenge Part 3 - Exercise

Challenge Part 3 - Solution

Strings

Section Introduction

String Concatenation

String Operations

Transforming Strings

Boolean-Based String Checks

Int-Based String Checks

Creating New Strings

Challenge Part 4 - Exercise

Challenge Part 4 - Solution

Conditionals

Section Introduction

Logical Operators Recap

The If Block

The Else Block

Alternate Flows with Elseif

Thinking About Conditionals

Dead Branches

Refactoring to Simplify Conditionals

Nested Conditionals

Good Versus Bad Refactoring

The Switch Statement

Break Statements in Switches

The Ternary Operator

Challenge Part 5 - Exercise

Challenge Part 5 - Solution

Loops

Section Introduction

What are Loops?

The While Loop

The Do While Loop

The For Loop

Esoteric Loops

The For Each Loop with Collections

Processing Collections with Streams

Challenge Part 6 - Exercise

Challenge Part 6 - Solution

Methods

Section Introduction

What are Methods?

Creating a Method

Calling a Method

Passing Parameters

Passing Multiple Parameters

Returning Output from a Method

Using a Returned Value

Refactoring: Inlining

Refactoring: Removing Unnecessary Variables

Challenge Part 7 - Exercise

Challenge Part 7 - Solution

Classes and Objects

Section Introduction

What are Objects?

Creating a Class

Visibility Modifiers

Constructors

The Default Constructor

Instances and State

Adding Methods to Classes

Getters and Setters

Why Encapsulation is Important

Protecting the Integrity of Your Objects

Composing Objects

Referencing Other Objects

Object References

Stepping into an Object's Methods

Concept of Inheritance

Extending a Class

Adding Custom Methods

Creating Another Subclass

Viewing the Type Hierarchy

Superclass Variable References

Concept of Polymorphism

Abstract Methods

Non-Instantiability of Abstract Classes

Implementing Abstract Methods

Custom Implementation of Superclass Methods

Polymorphism in Action

Recap of OO Concepts

Challenge Part 8 - Exercise

Challenge Part 8 - Solution

Exceptions

Section Introduction

Concept of an Exception

Try Catch Blocks

Scoping in Try Blocks

Happy Path and Error Path

Throwing Exceptions

Creating and Throwing Your Own Exceptions

Chaining Exceptions

Checked Exceptions

Non-Checked Exceptions

Differences Between Checked and Non-Checked Exceptions

Bubbling Exceptions Up the Call Stack

Runtime Exception Handling in Nested Method Calls

Checked Exception Handling in Nested Method Calls

Exceptions and Non-Void Methods

Multiple Catch Blocks

Alternate Exceptions in a Catch Block

Ordering of Catch Blocks

Challenge Part 9 - Exercise

Challenge Part 9 - Solution

Collections

Section Introduction

Lists

The Collection Interface

Sets

Lists Versus Sets

Maps

Coding with Classes and Collections

Using Your Own Classes with Collections

The Equals Method with Collections

Implementing Hash Code and Equals

Frequently Asked Questions for Java Beginners

What is Java? And How Does It Differ from Other Programming Languages?

Do I Need to Know How to Program in Other Languages to Learn Java?

What Kind of Computer Do I Need to Code with Java?

Do I Need to Know Math to Program with Java?

What Can You Do with Java?

What Tools Do You Need to Write Java Code/Create Apps?

How Do You Get a Job Once you Know Java?

Wrapping Up

Course Conclusion

Java for Beginners: Your Easy Guide to Java Programming

By : Matthew Speake

Java for Beginners: Your Easy Guide to Java Programming

By: Matthew Speake

Overview of this book

Confirmation

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