6.1

Declarations

NAMES

be accessed anywhere within the package that contains its declaration; other pos 

sibilities are

public

,

protected

, and

private

.

Fully qualified names ( 6.7) and naming conventions ( 6.8) are also dis 

cussed in this chapter.

The name of a field, parameter, or local variable may be used as an expression

( 15.13.1). The name of a method may appear in an expression only as part of a

method invocation expression ( 15.11). The name of a class or interface type may

appear in an expression only as part of a class instance creation expression

( 15.8), an array creation expression ( 15.9), a cast expression ( 15.15), or an

instanceof

 expression ( 15.19.2), or as part of a qualified name for a field or

method. The name of a package may appear in an expression only as part of a

qualified name for a class or interface type.

6.1   Declarations

A

declaration

 introduces an entity into a Java program and includes an identifier

( 3.8) that can be used in a name to refer to this entity. A declared entity is one of

the following:

A package, declared in a

package

 declaration ( 7.4)

An imported type, declared in a single type import declaration ( 7.5.1) or a

type import on demand declaration ( 7.5.2)

A class, declared in a class type declaration ( 8.1)

An interface, declared in an interface type declaration ( 9.1)

A member of a reference type ( 8.2,  9.2,  10.7), one of the following:

N

A field, one of the following:

O

A field declared in a class type ( 8.3)

O

A constant field declared in an interface type ( 9.3)

O

The field

length

, which is implicitly a member of every array type

( 10.7)

N

A method, one of the following:

O

A method (

abstract

 or otherwise) declared in a class type ( 8.4)

O

A method (always

abstract

) declared in an interface type ( 9.4)

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