IntelliJ inspection gives "Cannot resolve symbol" but still compiles code

Platform: IntelliJ Community Edition 10.0.3

SDK: jdk1.6.0_21

OS: Windows 7

So I have a strange situation with IntelliJ that has me completely stumped. I setup a Maven project and add log4j as a dependency in the pom.xml file. The IDEA inspections run fine and my unit tests all compile and run.

I then added hunnysoft's jmime library to my local maven repository using the mvn install:install-file as follows.

mvn install:install-file -Dfile=jmime.jar -DgroupId=jmime \
-DartifactId=jmime -Dversion=3.1.1e -Dpackaging=jar

Maven installed the jar file just fine into my local repository.

I then went into IntelliJ's Settings => Maven => Repository Services and Updated my local repository (so that IntelliJ would reindex the repository contents).

Finally, I added the following dependency to my pom.xml file (just above the log4j dependency).

    jmime
    jmime
    3.1.1e

I now create a new class as follows:

package com.stackoverflow.question;

import org.apache.log4j.Logger;
import com.hunnysoft.jmime.ByteString;
import com.hunnysoft.jmime.Field;
import com.hunnysoft.jmime.FieldBody;

public class StackOverflowQuestion {
    public Field create(String name, String text) {
        Logger.getLogger(getClass()).debug("create entered");
        FieldBody body = new FieldBody();
        body.setText(new ByteString(text));
        Field field = new Field();
        field.setFieldName(name);
        field.setFieldBody(body);
        return field;
    }
}

Now for the weirdness. IntelliJ's intention mechanism picks up and recognizes the Logger import in the maven pom file just fine. However, for all of the hunnysoft imports it reports: "Cannot resolve symbol 'ByteString/Field/FieldBody'", BUT Build => Compile 'StackOverflowQuestion.java' compiles everything correctly and the unit test I created for this class runs fine (though the intentions mark the call to create() as a problem area too).

So somewhere, somehow IntelliJ is ignoring the jmime.

First of all you should try File | Invalidate Caches and if it doesn't help, delete IDEA system directory. Then re-import the Maven project and see if it helps.

In some weird cases compiled classes may report wrong info and confuse IDEA. Verify that the classes from this jar report correct names using javap.

Stack Overflow Q#5905896, score: 1364