EXPRESSIONS

Constant Expression

15.27

behave in exactly the same manner as the statements:

k = k + (k = 4) * (k + 2);

a[0] = a[0] + (a[0] = 4) * (a[0] + 2);

15.26   Expression

An

Expression

 is any assignment expression:

Expression:

AssignmentExpression

Unlike C and C++, the Java language has no comma operator.

15.27   Constant Expression

ConstantExpression:

Expression

A compile time

constant expression

 is an expression denoting a value of

primitive type or a

String

 that is composed using only the following:

Literals of primitive type and literals of type

String

Casts to primitive types and casts to type

String

The unary operators

+

,

,

~

, and

!

(but not

++

 or

)

The multiplicative operators

*

,

/

, and

%

The additive operators

+

 and

The shift operators

<<

,

>>

, and

>>>

The relational operators

<

,

<=

,

>

, and

>=

(but not

instanceof

)

The equality operators

==

 and

!=

The bitwise and logical operators

&

,

^

, and

|

The conditional and operator

&&

 and the conditional or operator

||

The ternary conditional operator

? :

Simple names that refer to

final

 variables whose initializers are constant

expressions

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