Running Clojure applications
You will need to have a Java Runtime Edition (usually installed on most computers by default) to run any Clojure applications.
To test if you have Java on your computer, open a command line window and run the command
Building Clojure applications
Clojure is a compiled language and as you evaluate your code it is compiled into Java bytecode.
So in order to develop Clojure, you must have either OpenJDK or Oracle SE (JDK) installed, vers 8 is recommended (although version 6 & 7 should work).
Installing a Java Software Development Kit (Java SDK)
Download and install the latest Oracle Java SDK (version 1.8 at time of writing).
Alternatively, install OpenJDK