Intellij IDEA，java，maven，不能使用导入库

Question

I have setup a JavaFX project in Intellij IDEA. JAVAFX works fine. Now I wanted to import org.json.simple.. So I added at to pom.xml and it downloaded the.jar file. Now I want to use it in Java class. But it shows an error:

Cannot resolve symbol 'JSONObject'

and as solutions it shows me this:

but none of this worked. I run already maven clean install I updated the Maven Repositories (default local and remote) I tried adding it as downloaded.jar file The error is still there.

Answer 1

Click on the reload all maven projects icon in intellij.