private static method that returns true if the given char is either a uppercase or lowercase letter from ` a ' till ` z ' , or a digit froim ' 0 ' till ' 9 ' , or one of the characters ' - ' , '_' , ' . ' or '' . such ` safe ' character do n't have to be url encoded . concode_field_sep String hex concode_field_sep String encode concode_elem_sep String encode
boolean function ( char arg0 ) { return ( ( arg0 >= 'a' && arg0 <= 'z' ) || ( arg0 >= 'A' && arg0 <= 'Z' ) || ( arg0 >= '0' && arg0 <= '9' ) || arg0 == '-' || arg0 == '_' || arg0 == '.' || arg0 == '*' ) ; }