http://docs.oracle.com/javase/tutorial/java/nutsandbolts/_keywords.html
Java Language Keywords
Here is a list of keywords in the Java programming language. You cannot use any of the following as identifiers in your programs. The keywords const
and goto
are
reserved, even though they are not currently used. true
,false
, and null
might
seem like keywords, but they are actually literals; you cannot use them as identifiers in your programs.
abstract | continue | for | new | switch |
assert *** | default | goto * | package | synchronized |
boolean | do | if | private | this |
break | double | implements | protected | throw |
byte | else | import | public | throws |
case | enum **** | instanceof | return | transient |
catch | extends | int | short | try |
char | final | interface | static | void |
class | finally | long | strictfp ** | volatile |
const * | float | native | super | while |
* | not used | |
** | added in 1.2 | |
*** | added in 1.4 | |
**** | added in 5.0 |
看Java语言的关键字,可以知道,const和goto一样,是保留的关键字,但现在不用。不能作为标识符。