Can't integrate JavaFX with Spring Boot in IntelliJ

Question

I would like to integrate Spring Boot with JavaFX in IntelliJ environment. I've found this article about it.

But it isn't working for me. I have done these steps:

1. Generate plain project using spring initializer .
2. Import project (Maven project) in IntelliJ
3. Now I can run spring boot application, and it works well.
4. Make changes from the article.
5. Run Spring application action, and then getting errors:

Errors:

Error:(7, 26) java: package javafX.application does not exist
Error:(8, 19) java: package javafx.fxml does not exist
Error:(9, 20) java: package javafx.scene does not exist
Error:(10, 20) java: package javafx.scene does not exist
Error:(11, 20) java: package javafx.stage does not exist
Error:(14, 37) java: cannot find symbol symbol: class Application

IntelliJ find sources of JavaFX packages. I can look into JavaFX code. But why cannot compile and run?

Answer 1

It's probably caused by IntelliJ which downgrade your java version. Try this solution:

File->Project Structure -> Project and check if Project SDK and Project language level is above 8.

You can also use shortcut: ctrl + shift + alt + s