LEXICAL STRUCTURE

Separators

3.11

EscapeSequence:

\ b

/* \u0008:

backspace

BS

*/

\ t

/* \u0009:

horizontal tab

HT

*/

\ n

/* \u000a:

linefeed

LF

*/

\ f

/* \u000c:

form feed

FF

*/

\ r

/* \u000d:

carriage return

CR

*/

\ "

/* \u0022:

double quote

" */

\  

/* \u0027:

single quote

  */

\ \

/* \u005c:

backslash

\ */

OctalEscape

/* \u0000

 to

\u00ff:

from octal value

 */

OctalEscape:

\

OctalDigit

\

OctalDigit OctalDigit

\

ZeroToThree OctalDigit OctalDigit

OctalDigit: one of

0 1 2 3 4 5 6 7

ZeroToThree: one of

0 1 2 3

It is a compile time error if the character following a backslash in an escape is

not an ASCII

b

,

t

,

n

,

f

,

r

,

"

,

,

\

,

0

,

1

,

2

,

3

,

4

,

5

,

6

, or

7

. The Unicode escape

\u

 is

processed earlier ( 3.3). (Octal escapes are provided for compatibility with C, but

can express only Unicode values

\u0000

 through

\u00FF

, so Unicode escapes are

usually preferred.)

3.10.7   The Null Literal

The null type has one value, the null reference, represented by the literal

null

,

which is formed from ASCII characters. A

null literal

 is always of the null type.

NullLiteral:

null

3.11   Separators

The following nine ASCII characters are the Java

separators

(punctuators):

Separator: one of

(

)

{

}

[

]

;

,

.

27