%% %jayscanner browserscanner %jayparser browserparser %class browserlexer %eofval{ return new EOF(); %eofval} ws = [ \t\r\n\b \015]+ %% [0-9]+ { return new NUM(yytext()) ; } "+" { return new PLS(); } "-" { return new MIN(); } "*" { return new MUL(); } "/" { return new DIV(); } "(" { return new BROP(); } ")" { return new BRCL(); } {ws} { System.out.println(yytext()); } . { System.out.println("Falsch"); }