Chapter 10. Java Interoperability
Calling Java from Clojure
Clojure is built on Java not only because it is a portable, feature-rich platform, but because thousands of libraries, both open-source and commercial, are written in Java. Clojure can leverage all this existing code to get past the "library problem" that plagues most new programming languages.
Clojure does not come packaged with libraries to handle common tasks like file I/O, networking, and database connections. While the number of extant Clojure libraries is growing rapidly, it is still quite small. Fortunately, for any task you might have in mind, there almost certainly exists a Java library to help you with it. The JVM itself comes with over 4000 classes covering everything from networking ...
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