Introduction: Supporting code for Think Java by Allen Downey and Chris Mayfield.
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Supporting code for Think Java by Allen Downey and Chris Mayfield.

This is a Git repository that contains the code examples from the book and starter code for some exercises.

Git is a version control system that allows you to keep track of the files that make up a project. A collection of files under Git's control is called a repository.

There are several ways you can work with the code:

  • You can edit and run the code on Codiva online java IDE.

  • You can create a copy of this repository on GitHub by pressing the "Fork" button in the upper right. If you don't already have a GitHub account, you'll need to create one. After forking, you'll have your own repository on GitHub that you can use to keep track of code you write. Then you can ``clone'' the repository, which downloads a copy of the files to your computer.

  • Alternatively, you could clone the repository without forking. If you choose this option, you don't need a GitHub account, but you won't be able to save your changes back in GitHub.

  • If you don't want to use Git at all, you can download the code in a zip archive using the "Download ZIP" button on this page, or this link.

To clone a repository, you need a Git client installed on your computer. The URL of this repository is If you use Git from the command line, you can clone it like this:

git clone

After you clone the repository or unzip the zip file, you should have a directory called ThinkJavaCode with a subdirectory for each chapter in the book.

All examples in this book were developed and tested using Java SE Development Kit 8. If you are using a more recent version, the examples in this book should still work. If you are using an older version, some of them may not.

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