Teach Yourself Java in 21 Days (8th Edition)

Welcome to the web site for the book Teach Yourself Java in 21 Days (8th Edition) by Rogers Cadenhead. Fully updated for Java 11 and 12, the book teaches Java programming to beginners and experienced programmers, introducing new features of the language and covering exciting new areas of development such as lambda expressions and game development.

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Table of Contents

Use these links for information related to a specific day in the book:

• Day 1: Getting Started with Java
• Day 2: The ABCs of Programming
• Day 3: Working with Objects
• Day 4: Lists, Logic, and Loops
• Day 5: Creating Classes and Methods
• Day 6: Packages, Interfaces, and Other Class Features
• Day 7: Exceptions and Threads
• Day 8: Data Structures
• Day 9: Creating a Graphical User Interface
• Day 10: Building an Interface
• Day 11: Arranging Components on a User Interface
• Day 12: Responding to User Input
• Day 13: Creating Java2D Graphics
• Day 14: Developing Swing Applications
• Day 15: Using Inner Classes and Lambda Expressions
• Day 16: Working with Input and Output
• Day 17: Communicating Over HTTP
• Day 18: Accessing Databases with JDBC and Derby
• Day 19: Reading and Writing RSS Feeds
• Day 20: Making Web Service Requests
• Day 21: Writing a Game with Java
• Day 22: Creating Slackbots with Java (Barnes & Noble Edition only)
• Appendix A: Using the NetBeans Integrated Development Environment
• Appendix B: Fixing Package Not Visible Errors in NetBeans
• Appendix C: This Book's Web Site
• Appendix D: Using the Java Development Kit
• Appendix E: Programming with the Java Development Kit

What's New

Most recent additions to this site:

• Day 20: A new link to load the XML-RPC specification. (04-05-2020)
• Day 19: A new link for those who can't load web.resource.org. (04-05-2020)
• Day 22: Author's Slack workspace incomingHookUrl no longer valid. (03-08-2020)
• Day 18: New URL for stock ticker data (03-08-2020)
• This site was launched (01-01-2020).

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