Book Image

Introduction to JVM Languages

Book Image

Introduction to JVM Languages

Overview of this book

Anyone who knows software development knows about the Java Virtual Machine. The Java Virtual Machine is responsible for interpreting Java byte code and translating it into actions. In the beginning, Java was the only programming language used for the JVM. But increasing complexity of the language and the remarkable performance of the JVM created an opening for a new generation of programming languages. If you want to build a strong foundation with the Java Virtual Machine and get started with popular modern programming languages, then this book is for you. The book will begin with a general introduction of the JVM and its features, which are common to the JVM languages, helping you get abreast with its concepts. It will then dive into explaining languages such as Java, Scala, Clojure, Kotlin, and Groovy and will show how to work with each language, their features, use cases, and pros and cons. By writing example projects in those languages and focusing on each language’s strong points, it will help you find the programming language that is most appropriate for your particular needs. By the end of the book, you will have written multiple programs that run on the Java Virtual Machine and know about the differences between the various languages.
Table of Contents (21 chapters)
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Creating a new Counterclockwise project


Now that we've tried out Leiningen, we are ready to build our first project in Eclipse IDE using the Counterclockwise plugin:

  1. In Eclipse IDE, right-click on an empty spot in Package Explorer and choose New | Other....
  2. The Select a wizard dialog appears. Choose Clojure | Clojure Project and click on Next.
  3. Choose the exploring-monads project name. Make sure the default Leiningen template is selected:
  1. Click on Finish to generate the project.

Note

Note that you can choose any other template supported by Leiningen here. There's one caveat: Counterclockwise's built-in Leiningen version is used to generate projects, and this version can be out of date. As we will see later in this chapter, this can be resolved by creating a project on the command-line.

The creation process of the project will take some time. When finished, take a look at the created project by expanding it in Package Explorer. Its directory structure should look familiar.

Open the src/exploring_monads...