intellij idea setting java language level to 8

Project Settings -> Modules -> Sources -> Language level : 8
Project Settings -> Project -> Project SDK -> 1.8
Project Settings -> Project -> Project Language Level -> 8
File > Settings > Build, Execution, Deployment > Java Compiler >
Project Bytecode version -> 1.8
File > Settings > Build, Execution, Deployment > Java Compiler > Per
module Bytecode version -> 1.8