Java Reseved Keywords
Keywords are identifiers like public, static and class that have a special meaning inside Java source code and outside of comments and Strings. Four keywords are used in Hello World, public, static, void and class.
Keywords are reserved for their intended use and cannot be used by the programmer for variable or method names.
There are fifty reserved keywords in Java 1.1, 51 in Java 1.2, 52 in Java 1.4, and 54 in Java 5. The forty-eight that are actually used in are listed below. Don't worry if the purposes of the keywords seem a little opaque at this point. They will all be explained in much greater detail later.
Keywords Used in Java
abstract | continue | for | new | switch |
---|---|---|---|---|
assert | default | goto | packege | 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 | finaly | long | strictfp | volatile |
const | float | native | super | while |
Note:- true and false appear to be missing from this list. In fact, they are not keywords but rather boolean literals. You still can't use them as a variable name though.
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