/idea-maven-classpath-bug

demo project to report bug IDEA-221549

Primary LanguageJava

What's this?

This is demo project to report bug IDEA-221549 IDEA incorrectly build internal classpath of maven multi-module project and shows false positive compilation errors .

What steps will reproduce the issue?

  1. Open project in IDEA and import maven project
  2. Open file AppResourceConfig

What is the expected result? no errors.

What happens instead?

Error

'getConfiguration()' in 'org.glassfish.jersey.server.ResourceConfig' clashes with 'getConfiguration()' in 'javax.ws.rs.core.Configurable'; attempting to use incompatible return type

bug_screen_01.png

Possible causes

Possible cause is classpath hell of jersey lib in multi=module java project and mix of different scopes in single classpath.

Can be w/a in different ways

  1. By excluding of old verson of jersey lib in lib-a module. Note, that in lib-a it used in test scope, why it is added to compile scope of nearby lib?

  2. renaming of z-app to a-app. In this case classpath order will change I guess.

Additional info

IDEA version

IntelliJ IDEA 2019.2.1 (Ultimate Edition)
Build #IU-192.6262.58, built on August 20, 2019