6.8

Naming Conventions

NAMES

The fully qualified name of a class or interface that is declared in an unnamed

package is the simple name of the class or interface.

The fully qualified name of a class or interface that is declared in a named

package consists of the fully qualified name of the package, followed by  

.

 ,

followed by the simple name of the class or interface.

The fully qualified name of an array type consists of the fully qualified name

of the component type of the array type followed by  

[]

 .

Examples:

The fully qualified name of the type

long

 is  

long

 .

The fully qualified name of the standard package

java.lang

 is  

java.lang

because it is subpackage

lang

 of package

java

.

The fully qualified name of the class

Object

, which is defined in the package

java.lang

, is  

java.lang.Object

 .

The fully qualified name of the interface

Enumeration

, which is defined in

the package

java.util

, is  

java.util.Enumeration

 .

The fully qualified name of the type  array of

double

  is  

double[]

 .

The fully qualified name of the type  array of array of array of array of

String

  is  

java.lang.String[][][][]

 .

In the example:

package points;

class Point { int x, y; }

class PointVec {

Point[] vec;

}

the fully qualified name of the type

Point

 is  

points.Point

 ; the fully qualified

name of the type

PointVec

 is  

points.PointVec

 ; and the fully qualified name

of the type of the field

vec

 of class

PointVec

 is  

points.Point[]

 .

6.8   Naming Conventions

The Java system and standard classes attempt to use, whenever possible, names

chosen according to the conventions presented here. These conventions help to

make code more readable and avoid certain kinds of name conflicts.

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