I am using Emacs 26.3, CIDER 0.23.0 (Lima), Open JDK 11.0.5 (OpenJDK Runtime Environment Corretto-11.0.5.10.2 (build 11.0.5+10-LTS) on macOS Mojave (10.14.6). My CIDER installation works for everything that I need, but not for referencing JDK source code and javadoc. It shows me Clojure source for Clojure methods but not JDK source for any Java methods for some reason. I figured out that my cider-classpath is missing the jdk source.zip location and other jars from JRE as seen below.
/Users/user/Projects/clojure/test/test
/Users/user/Projects/clojure/test/src
/Users/user/Projects/clojure/test/dev-resources
/Users/user/Projects/clojure/test/resources
/Users/user/Projects/clojure/test/target/classes
/Users/user/.m2/repository/cider/cider-nrepl/0.22.4/cider-nrepl-0.22.4.jar
/Users/user/.m2/repository/nrepl/nrepl/0.6.0/nrepl-0.6.0.jar
/Users/user/.m2/repository/org/clojure/clojure/1.10.0/clojure-1.10.0.jar
/Users/user/.m2/repository/org/clojure/spec.alpha/0.2.176/spec.alpha-0.2.176.jar
/Users/user/.m2/repository/org/clojure/core.specs.alpha/0.2.44/core.specs.alpha-0.2.44.jar
/Users/user/.m2/repository/clojure-complete/clojure-complete/0.2.5/clojure-complete-0.2.5.jar
How can I make JDK source code lookup work in CIDER?