6.4.4

The Members of an Array Type

NAMES

In the example:

interface Colors {

int WHITE = 0, BLACK = 1;

}

interface Separates {

int CYAN = 0, MAGENTA = 1, YELLOW = 2, BLACK = 3;

}

interface ColorsAndSeparates extends Colors, Separates {

int DEFAULT = BLACK;

//

compile time error: ambiguous

}

the members of the interface

ColorsAndSeparates

 include those members

inherited from

Colors

 and those inherited from

Separates

, namely

WHITE

,

BLACK

 (first of two),

CYAN

,

MAGENTA

,

YELLOW

, and

BLACK

 (second of two). The

member name

BLACK

 is ambiguous in the interface

ColorsAndSeparates

.

6.4.4   The Members of an Array Type

The members of an array type ( 10.7) are all of the following:

Members inherited from its implicit superclass

Object

 ( 4.3.2,  20.1)

The field

length

, which is a constant (

final

) field of every array; its type is

int

 and it contains the number of components of the array

The example:

class Test {

public static void main(String[] args) {

int[] ia = new int[3];

int[] ib = new int[6];

System.out.println(ia.getClass() == ib.getClass());

System.out.println("ia has length=" + ia.length);

}

}

produces the output:

true

ia has length=3

This example uses the method

getClass

 inherited from class

Object

 and the

field

length

. The result of the comparison of the

Class

 objects in the second

println

 demonstrates that all arrays whose components are of type

int

 are

instances of the same array type, which is

int[]

.

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