java - Maven dependencies are downloaded but not recognized inside project -

i want build project has external libraries. included pom.xml file inside intellij , downloaded of required dependencies files maven , put them external libraries, project doesn't recognize them , gives compilation error. ide screen attached below.

this 1 of compilation errors get:

error:(29, 33) java: package com.google.common.collect not exist 

here external libraries think added correctly.

i don't have maven installed think intellij handles self.

have tried running mvn clean compile either using intellij or command line ?