The Java Language Specification, Third Edition

NAMES Syntactic Classification of a Name According to Context 6.5.1
MethodName:
Identifier
AmbiguousName . Identifier
PackageOrTypeName:
Identifier
PackageOrTypeName . Identifier
AmbiguousName:
Identifier
AmbiguousName . Identifier
The use of context helps to minimize name conflicts between entities of different
kinds. Such conflicts will be rare if the naming conventions described in
§6.8 are followed. Nevertheless, conflicts may arise unintentionally as types
developed by different programmers or different organizations evolve. For example,
types, methods, and fields may have the same name. It is always possible to
distinguish between a method and a field with the same name, since the context of
a use always tells whether a method is intended.
6.5.1 Syntactic Classification of a Name According to Context
A name is syntactically classified as a PackageName in these contexts:
• In a package declaration (§7.4)
• To the left of the “.” in a qualified PackageName
A name is syntactically classified as a TypeName in these contexts:
• In a single-type-import declaration (§7.5.1)
• To the left of the "." in a single static import (§7.5.3) declaration
• To the left of the "." in a static import-on-demand (§7.5.4) declaration
• To the left of the "