NAMES

The Members of a Package

6.4.1

The example:

import java.util.*;

class Vector {

int val[] = { 1 , 2 };

}

class Test {

public static void main(String[] args) {

Vector v = new Vector();

System.out.println(v.val[0]);

}

}

compiles and prints:

1

using the class

Vector

 declared here in preference to class

java.util.Vector

that might be imported on demand.

6.4   Members and Inheritance

Packages and reference types have

members

. The members of a package ( 7) are

subpackages ( 7.1) and all the class ( 8) and interface ( 9) types declared in all

the compilation units ( 7.3) of the package. The members of a reference type

( 4.3) are fields ( 8.3,  9.3,  10.7) and methods ( 8.4,  9.4). Members are either

declared in the type, or

inherited

because they are accessible members of a super 

class or superinterface which are neither hidden nor overridden ( 8.4.6).

This section provides an overview of the members of packages and reference

types here, as background for the discussion of qualified names and the determi 

nation of the meaning of names. For a complete description of membership, see

 7.1,  8.2,  9.2, and  10.7.

6.4.1   The Members of a Package

A member of a package ( 7) is a subpackage ( 7.1), or a class ( 8) or interface

( 9) type declared in a compilation unit ( 7.3) of the package.

In general, the subpackages of a package are determined by the host system

( 7.2). However, the standard package

java

 always includes the subpackages

lang

,

util

,

io

, and

net

 and may include other subpackages. No two distinct

members of the same package may have the same simple name ( 7.1), but mem 

bers of different packages may have the same simple name. For example, it is pos 

sible to declare a package:

85