How to add/remove node to Tree

I am migrating a SWING application into Vaadin 8. I am running into the following two problems:

  1. How to add/remove node to Vaadin Tree dynamically? I did some search and found Tree has addItem which is whatever I am looking for online. But there is now such method in Vaadin 8 Tree. How do I add/remove node to Vaadin 8 tree?

  2. How to add/remove row to Vaadin Grid dynamically?




You’ll need to look into data providers - check particularly the “refreshing” subheading in the “Showing Many Items in a Listing” part of the docs: