Summary

Qualified name of a type element depends on its origin (source vs class).

Problem

javax.lang.model.type.TypeMirror::toString says: "Any names embedded in the result are qualified if possible." However the implementation is inconsistent in the form of an inner class name. It may return qualified name (for example java.lang.Runtime.Version) or flat name (for example java.lang.Runtime$Version).

Solution

Return always the qualified name.

Specification

There is no specification change, only implementation fix.