Wie würden Sie diese JavaScript-Regex in Java übersetzen?

Question

Wie würden Sie diese JavaScript-Regex in Java übersetzen?

Es entfernt Interpunktion aus einem String:

strippedStr = str.replace(/[\.,-\/#!$%\^&\*;:{}=\-_`~()]/g,""); 

Answer 1

keinen Java Kerl, aber:

public static final String expression = "[\\s\\p{Punct}]"; 

Quelle: C# equivalent of Java Punctuation regex

Answer 2

Die g am Ende des regulären Ausdrucks bedeutet, es ist global; Die äquivalente Java String Methode ist replaceAll() (die eine Suche regexp und eine Ersetzungszeichenfolge benötigt). Das einzige, was müssen Sie die regexp zu tun ist, sich die \ s entkommen, da die Java-Parser Dinge interpretieren wie \., wie Sie ein . zu entkommen versuchen: dort

String strippedStr = str.replaceAll("[\\.,-\\/#!$%\\^&\\*;:{}=\\-_`~()]", ""); 

Answer 3

Sie nicht brauchen die s/// Sachen Übergeben Sie einfach den regulären Ausdruck, und hier ist es eine Zeichenklasse.

public static void main(String [] args) 
{ 
    String s = ".,/#!$%^&*;:{}=-_`~()./#hello#&%---#(($"; 
    String n = s.replaceAll("[-.,/#!$%^&*;:{}=_`~()]", ""); 
    System.out.println(n); // should print "hello" 

    // using POSIX character class which matches any of: 
    // !"#$%&'()*+,-./:;<=>?@[\]^_`{|}~ 
    String p = s.replaceAll("\\p{Punct}", ""); 
    System.out.println(p); 
} 

Syntax für Java Regular Expressions hier: http://download.oracle.com/javase/6/docs/api/java/util/regex/Pattern.html#sum

Die Klasse POSIX-Zeichen verwendet oben deckt ein wenig mehr, als Sie haben, so bin ich nicht sicher, ob es Ihren Bedürfnissen entspricht.

• bearbeitet, weil Sie nicht . in der Zeichenklasse entkommen müssen.
• bearbeitet - zu Beginn der Zeichenklasse zu bewegen, um es

Answer 4

Würde der Auftrag nicht diese Charakterklasse in prägnanter Weise getan keine besondere Bedeutung hat?

str.replaceAll("[\\W_]", ""); 

Answer 5

Wenn Sie dies erwarten, statt nur ASCII mit allen Interpunktion zu arbeiten, müssen Sie verwenden:

String new_string = old_string.replaceAll("[\\pS\\pP]", ""); 

Das ist, weil einige der Dinge, die Sie Interpunktion tatsächlich Symbole nennend, wie offenbart durch my uniprops script:

$ uniprops - \\ . ,/'#' ! '$' %^'&' '*' ';' : { } = _ '`' '~' '(' ')' 
    U+002D ‹-› \N{ HYPHEN-MINUS }: 
    \pP \p{Pd} 
    All Any ASCII Assigned Common Zyyy Dash Dash_Punctuation Pd P Gr_Base Grapheme_Base Graph GrBase Punct Pat_Syn Pattern_Syntax PatSyn PosixGraph PosixPrint PosixPunct Print Punctuation XPosixGraph XPosixPrint XPosixPunct 
U+005C ‹\› \N{ REVERSE SOLIDUS }: 
    \pP \p{Po} 
    All Any ASCII Assigned Common Zyyy Po P Gr_Base Grapheme_Base Graph GrBase Other_Punctuation Punct Pat_Syn Pattern_Syntax PatSyn PosixGraph PosixPrint PosixPunct Print Punctuation XPosixGraph XPosixPrint XPosixPunct 
U+002E ‹.› \N{ FULL STOP }: 
    \pP \p{Po} 
    All Any ASCII Assigned Case_Ignorable CI Common Zyyy Po P Gr_Base Grapheme_Base Graph GrBase Other_Punctuation Punct Pat_Syn Pattern_Syntax PatSyn PosixGraph PosixPrint PosixPunct Print Punctuation STerm Term Terminal_Punctuation XPosixGraph XPosixPrint XPosixPunct 
U+002C ‹,› \N{ COMMA }: 
    \pP \p{Po} 
    All Any ASCII Assigned Common Zyyy Po P Gr_Base Grapheme_Base Graph GrBase Other_Punctuation Punct Pat_Syn Pattern_Syntax PatSyn PosixGraph PosixPrint PosixPunct Print Punctuation Term Terminal_Punctuation XPosixGraph XPosixPrint XPosixPunct 
U+002F ‹/› \N{ SOLIDUS }: 
    \pP \p{Po} 
    All Any ASCII Assigned Common Zyyy Po P Gr_Base Grapheme_Base Graph GrBase Other_Punctuation Punct Pat_Syn Pattern_Syntax PatSyn PosixGraph PosixPrint PosixPunct Print Punctuation XPosixGraph XPosixPrint XPosixPunct 
U+0023 ‹#› \N{ NUMBER SIGN }: 
    \pP \p{Po} 
    All Any ASCII Assigned Common Zyyy Po P Gr_Base Grapheme_Base Graph GrBase Other_Punctuation Punct Pat_Syn Pattern_Syntax PatSyn PosixGraph PosixPrint PosixPunct Print Punctuation XPosixGraph XPosixPrint XPosixPunct 
U+0021 ‹!› \N{ EXCLAMATION MARK }: 
    \pP \p{Po} 
    All Any ASCII Assigned Common Zyyy Po P Gr_Base Grapheme_Base Graph GrBase Other_Punctuation Punct Pat_Syn Pattern_Syntax PatSyn PosixGraph PosixPrint PosixPunct Print Punctuation STerm Term Terminal_Punctuation XPosixGraph XPosixPrint XPosixPunct 
U+0024 ‹$› \N{ DOLLAR SIGN }: 
    \pS \p{Sc} 
    All Any ASCII Assigned Common Zyyy Currency_Symbol Sc S Gr_Base Grapheme_Base Graph GrBase Pat_Syn Pattern_Syntax PatSyn PosixGraph PosixPrint PosixPunct Print Symbol XPosixGraph XPosixPrint XPosixPunct 
U+0025 ‹%› \N{ PERCENT SIGN }: 
    \pP \p{Po} 
    All Any ASCII Assigned Common Zyyy Po P Gr_Base Grapheme_Base Graph GrBase Other_Punctuation Punct Pat_Syn Pattern_Syntax PatSyn PosixGraph PosixPrint PosixPunct Print Punctuation XPosixGraph XPosixPrint XPosixPunct 
U+005E ‹^› \N{ CIRCUMFLEX ACCENT }: 
    \pS \p{Sk} 
    All Any ASCII Assigned Case_Ignorable CI Common Zyyy Dia Diacritic Sk S Gr_Base Grapheme_Base Graph GrBase Math Modifier_Symbol Pat_Syn Pattern_Syntax PatSyn PosixGraph PosixPrint PosixPunct Print Symbol XPosixGraph XPosixPrint XPosixPunct 
U+0026 ‹&› \N{ AMPERSAND }: 
    \pP \p{Po} 
    All Any ASCII Assigned Common Zyyy Po P Gr_Base Grapheme_Base Graph GrBase Other_Punctuation Punct Pat_Syn Pattern_Syntax PatSyn PosixGraph PosixPrint PosixPunct Print Punctuation XPosixGraph XPosixPrint XPosixPunct 
U+002A ‹*› \N{ ASTERISK }: 
    \pP \p{Po} 
    All Any ASCII Assigned Common Zyyy Po P Gr_Base Grapheme_Base Graph GrBase Other_Punctuation Punct Pat_Syn Pattern_Syntax PatSyn PosixGraph PosixPrint PosixPunct Print Punctuation XPosixGraph XPosixPrint XPosixPunct 
U+003B ‹;› \N{ SEMICOLON }: 
    \pP \p{Po} 
    All Any ASCII Assigned Common Zyyy Po P Gr_Base Grapheme_Base Graph GrBase Other_Punctuation Punct Pat_Syn Pattern_Syntax PatSyn PosixGraph PosixPrint PosixPunct Print Punctuation Term Terminal_Punctuation XPosixGraph XPosixPrint XPosixPunct 
U+003A ‹:› \N{ COLON }: 
    \pP \p{Po} 
    All Any ASCII Assigned Case_Ignorable CI Common Zyyy Po P Gr_Base Grapheme_Base Graph GrBase Other_Punctuation Punct Pat_Syn Pattern_Syntax PatSyn PosixGraph PosixPrint PosixPunct Print Punctuation Term Terminal_Punctuation XPosixGraph XPosixPrint XPosixPunct 
U+007B ‹{› \N{ LEFT CURLY BRACKET }: 
    \pP \p{Ps} 
    All Any ASCII Assigned Bidi_M Bidi_Mirrored BidiM Common Zyyy Ps P Gr_Base Grapheme_Base Graph GrBase Open_Punctuation Punct Pat_Syn Pattern_Syntax PatSyn PosixGraph PosixPrint PosixPunct Print Punctuation XPosixGraph XPosixPrint XPosixPunct 
U+007D ‹}› \N{ RIGHT CURLY BRACKET }: 
    \pP \p{Pe} 
    All Any ASCII Assigned Bidi_M Bidi_Mirrored BidiM Close_Punctuation Pe Common Zyyy P Gr_Base Grapheme_Base Graph GrBase Punct Pat_Syn Pattern_Syntax PatSyn PosixGraph PosixPrint PosixPunct Print Punctuation XPosixGraph XPosixPrint XPosixPunct 
U+003D ‹=› \N{ EQUALS SIGN }: 
    \pS \p{Sm} 
    All Any ASCII Assigned Common Zyyy Sm S Gr_Base Grapheme_Base Graph GrBase Math Math_Symbol Pat_Syn Pattern_Syntax PatSyn PosixGraph PosixPrint PosixPunct Print Symbol XPosixGraph XPosixPrint XPosixPunct 
U+005F ‹_› \N{ LOW LINE }: 
    \w \pP \p{Pc} 
    All Any ASCII Assigned Common Zyyy Connector_Punctuation Pc P Gr_Base Grapheme_Base Graph GrBase ID_Continue IDC Punct PerlWord PosixGraph PosixPrint PosixPunct PosixWord Print Punctuation Word XID_Continue XIDC XPosixGraph XPosixPrint XPosixPunct XPosixWord 
U+0060 ‹`› \N{ GRAVE ACCENT }: 
    \pS \p{Sk} 
    All Any ASCII Assigned Case_Ignorable CI Common Zyyy Dia Diacritic Sk S Gr_Base Grapheme_Base Graph GrBase Modifier_Symbol Pat_Syn Pattern_Syntax PatSyn PosixGraph PosixPrint PosixPunct Print Symbol XPosixGraph XPosixPrint XPosixPunct 
U+007E ‹~› \N{ TILDE }: 
    \pS \p{Sm} 
    All Any ASCII Assigned Common Zyyy Sm S Gr_Base Grapheme_Base Graph GrBase Math Math_Symbol Pat_Syn Pattern_Syntax PatSyn PosixGraph PosixPrint PosixPunct Print Symbol XPosixGraph XPosixPrint XPosixPunct 
U+0028 ‹(› \N{ LEFT PARENTHESIS }: 
    \pP \p{Ps} 
    All Any ASCII Assigned Bidi_M Bidi_Mirrored BidiM Common Zyyy Ps P Gr_Base Grapheme_Base Graph GrBase Open_Punctuation Punct Pat_Syn Pattern_Syntax PatSyn PosixGraph PosixPrint PosixPunct Print Punctuation XPosixGraph XPosixPrint XPosixPunct 
U+0029 ‹)› \N{ RIGHT PARENTHESIS }: 
    \pP \p{Pe} 
    All Any ASCII Assigned Bidi_M Bidi_Mirrored BidiM Close_Punctuation Pe Common Zyyy P Gr_Base Grapheme_Base Graph GrBase Punct Pat_Syn Pattern_Syntax PatSyn PosixGraph PosixPrint PosixPunct Print Punctuation XPosixGraph XPosixPrint XPosixPunct