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Clojure for Java Developers

Clojure for Java Developers

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Clojure for Java Developers

Clojure for Java Developers

Overview of this book

We have reached a point where machines are not getting much faster, software projects need to be delivered quickly, and high quality in software is more demanding as ever. We need to explore new ways of writing software that helps achieve those goals. Clojure offers a new possibility of writing high quality, multi-core software faster than ever, without having to leave your current platform. Clojure for Java developers aims at unleashing the true potential of the Clojure language to use it in your projects. The book begins with the installation and setup of the Clojure environment before moving on to explore the language in-depth. Get acquainted with its various features such as functional programming, concurrency, etc. with the help of example projects. Additionally, you will also, learn how the tooling works, and how it interacts with the Java environment. By the end of this book, you will have a firm grip on Clojure and its features, and use them effectively to write more robust programs.
Table of Contents (9 chapters)
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8
Index

The classpath and the classloader

Java was designed to be modular and for that it needs some way to load your code easily. The answer to this was the classloader, the classloader allows you to read resources from every entry of the classpath; you can look at resources in the classpath as a hierarchical structure similar to the file system.

The classloader is just a list of entries; each entry can be a directory in the filesystem or a JAR file. At this point, you should also know that JAR files are just zip files.

The classloader will treat each entry as a directory (JAR files are just zipped directories) and it will look for files in each directory.

There are a lot of concepts here to remember, let's try to summarize them:

  • JAR files are ZIP files; they might contain several classes, properties, files, and so on.
  • The classpath is a list of entries; each entry is a JAR file or a system directory.
  • The classloader looks for resources in each entry of the classpath, so you can think of classpath...
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Clojure for Java Developers
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