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
(
)
{
}
[
]
;
,
.
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