vaadin 14 chart

open source jdk1.8 compatibility any add-ons?

I’m not entirely sure what your question is. If you’re asking if there’s an open source version of Vaadin that supports Java 8, then yes: Vaadin 14 and earlier

chart open source jdk1.8 compatibility any add-ons

https://vaadin.com/directory-beta/addon/chartjs-add-on-for-vaadin-14

thank u sir