include java sources to clojure project

1. Make src-java dir in a root folder of project.
2. Put usual java classes to src-java/ folder
3. Add following lines to the project.clj in root or in uberjar profile.

:java-source-paths ["src-java/"]
:prep-tasks  ["javac" "compile"]

That's it! 

convert pem to jks (java keystore)

after letsencrypt finish we  must convert our keys to jks.
here is some instructions:

openssl pkcs12 -export -in server-cert.pem -inkey server-private.pem -out server.p12 -name localhost -CAfile ca.pem -caname root 

keytool -importkeystore -deststorepass passw12 -destkeypass passw12 -destkeystore server.jks -srckeystore server.p12 -srcstoretype PKCS12 -srcstorepass passw12 -alias localhost