question: public static int numOfParameters ( String desc ) { int n = 0 ; int i = 1 ; for ( ; ; ) { char c = desc . charAt ( i ) ; if ( c == ')' ) break ; while ( c == '[' ) c = desc . charAt ( ++ i ) ; if ( c == 'L' ) { i = desc . indexOf ( ';' , i ) + 1 ; if ( i <= 0 ) throw new IndexOutOfBoundsException ( "bad descriptor" ) ; } else ++ i ; ++ n ; } return n ; }
target:  Returns the number of the prameters included in the given descriptor.