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<META name=vsisbn content="1558515682"><META name=vstitle content="Java Digital Signal Processing"><META name=vsauthor content="Douglas A. Lyon"><META name=vsimprint content="M&T Books"><META name=vspublisher content="IDG Books Worldwide, Inc."><META name=vspubdate content="11/01/97"><META name=vscategory content="Web and Software Development: Programming, Scripting, and Markup Languages: Java"><TITLE>Java Digital Signal Processing:Java Programming: The Basics</TITLE>
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<P>Following are the MBNF rules of Java which we will use in the remaining sections and chapters. These rules will, when used, always refer to their numbers. Sometimes the MBNF will be refined beyond the basic MBNF given here. When this occurs, it will not be preceded by the numeration.
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compilationUnit ->
[packageStatement] < importStatement > < typeDeclaration > .
packageStatement ->
“package” packageName “;” .
importStatement ->
“import” ( ( packageName “.” “*” “;” ) |
( className | interfaceName ) ) “;” .
typeDeclaration ->
[docComment] ( classDeclaration | interfaceDeclaration ) “;” .
docComment ->
“/**” “... text ...” “*/”.
classDeclaration ->
< modifier > “class” identifier [“extends” className]
[ “implements” interfaceName < “,” interfaceName > ] “{“
< fieldDeclaration > “}” .
interfaceDeclaration ->
< modifier > “interface” identifier [ “extends”
interfaceName < “,” interfaceName > ] “{“
< fieldDeclaration > “}” .
fieldDeclaration ->
( [docComment] ( methodDeclaration |
constructorDeclaration | variableDeclaration ) ) |
staticInitializer | “;” .
method_declaration ->
< modifier > type identifier “(“ [parameterList] “)” <
“[“ “]” > ( statementBlock | “;” ) .
constructorDeclaration ->
< modifier > identifier “(“ [parameterList] “)”
statementBlock .
statementBlock ->
“{“ < statement > “}” .
variableDeclaration ->
< modifier > type variableDeclarator
< “,” variableDeclarator >
“;” .
variableDeclarator ->
identifier < “[“ “]” > [ “=” variableInitializer] .
variableInitializer ->
expression | ( “{“ [variableInitializer
< “,” variableInitializer > [ “,” ] ] “}” ) .
staticInitializer ->
“static” statementBlock .
parameterList ->
parameter < “,” parameter > .
parameter ->
type identifier < “[“ “]”
> .
statement ->
variableDeclaration | ( expression “;”)| (
statementBlock ) | ( ifStatement ) | ( doStatement ) |
( whileStatement ) | ( for_statement ) | ( tryStatement )
| ( switchStatement ) | ( “synchronized” “(“ expression
“)” statement ) | ( “return”
[expression] “;” ) | ( “throw” expression “;” ) | (
identifier “:” statement )
| ( “break” [identifier] “;” )
| ( “continue” [identifier] “;”
) | ( “;” ) .
ifStatement ->
“if” “(“ expression “)” statement [ “else” statement] .
doStatement ->
“do” statement “while” #147;(“ expression “)” “;” .
whileStatement ->
“while” “(“ expression “)” statement .
forStatement ->
“for” “(“ ( variableDeclaration | ( expression “;” )
| “;” ) [expression] “;” [expression] “;” “)”
statement .
tryStatement ->
“try” statement < “catch” #147;(“ parameter “)” statement >
[ “finally” statement] .
switchStatement ->
“switch” “(“ expression “)” “{“ < ( “case” expression
“:” ) | ( “default” “:” ) | statement >
“}” .
expression ->
numericExpression | testingExpression |
logicalExpression | stringExpression |
bitExpression | castingExpression | creatingExpression |
literalExpression | “null” | “super” | “this” |
identifier | ( “(“ expression “)” ) | ( expression (
( “(“ [arglist] “)” ) | (
“[“ expression “]” ) | (
“.” expression ) | ( “,”
expression ) | ( “instanceof”
( className | interfaceName ) ) ) ) .
numericExpression ->
( ( “-” | “++” | “—” ) expression ) |
( expression ( “++” |“—” ) ) |
( expression ( “+” | “+=” | “-” | “-=”
| “*” | “*=” | “/” | “/=”
| “%” | “%=” ) expression ) .
testingExpression ->
( expression ( “>” | “<” | “>=” | “<=” |
“==” | “!=” ) expression ) .
logicalExpression ->
( “!” expression ) | ( expression ( “&” | “&=”
| “|” | “|=” | “^” | “^=” | ( “&&” ) |
“||=” | “%” | “%=” )
expression ) | ( expression “?”
expression “:” expression ) | “true” |
“false” .
stringExpression = ( expression ( “+” | “+=” ) expression
) .
bitExpression ->
( “~” expression ) | ( expression ( “>>=” | “<<”
| “>>” | “>>>” ) expression ) .
castingExpression ->
“(“ type “)” expression .
creatingExpression ->
“new” ( ( className “(“ [arglist] “)” ) | (
type_specifier [ “[“ expression “]” ] < “[“ “]” > )
| ( “(“ expression “)” ) ) .
literalExpression ->
integerLiteral | floatLiteral | string | character .
arglist ->
expression < “,” expression > .
type ->
typeSpecifier < “[“ “]” > .
typeSpecifier ->
“boolean” | “byte” | “char” | “short” | “int”
| “float” | “long” | “double” | className |
interfaceName .
modifier ->
“public” | “private” | “protected” | “static” |
“final” | “native” | “synchronized” | “abstract”
| “threadsafe” | “transient”.
packageName ->
identifier | ( packageName “.” identifier ).
className ->
identifier | ( packageName “.” identifier ).
interfaceName ->
identifier | ( packageName “.” identifier ) .
integerLiteral ->
( ( “1..9” < “0..9” > ) |
< “0..7” > | ( “0” “x” “0..9a..f” <
“0..9a..f” > ) ) [ “l” ] .
floatLiteral ->
( decimalDigits “.” [decimalDigits]
[exponentPart]
[floatTypeSuffix] ) | ( “.” decimalDigits
[exponentPart] [floatTypeSuffix] ) | ( decimalDigits
[exponentPart] [floatTypeSuffix] ) .
decimalDigits ->
“0..9” < “0..9” > .
exponentPart ->
“e” [ “+” | “-”] decimalDigits .
floatTypeSuffix ->
“f” | “d” . character ->
“based on the unicode character set” .
string ->
“‘’” < character > “‘’” .
identifier ->
“a..z,$,_” < “a..z,$,_,0..9,unicode character over 00C0” > .
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