sample app using keycloak JWT/openid security with a javascript (ojet/knockout) client UI and a helidon REST service
For a full description of how to run this, plase see this blog:
https://blogs.oracle.com/coretec/post/single-sign-on-in-oracle-verrazzano-with-keycloak
https://blogs.oracle.com/coretec/post/single-sign-on-in-oracle-verrazzano-mit-keycloak