static boolean isVowel ( char x ) {
  x = Character . toLowerCase ( x ) ;
  return ( x == 'a' || x == 'e' || x == 'i' || x == 'o' || x == 'u' ) ;
}

static boolean isVowel ( char x ) { x = Character . toLowerCase ( x ) ; return ( x == ' a ' || x == ' e ' || x == ' i ' || x == ' o ' || x == ' u ' ) ; }
(method_declaration (modifiers) type: (boolean_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier))) body: (block (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))))) (return_statement (parenthesized_expression (binary_expression left: (binary_expression left: (binary_expression left: (binary_expression left: (binary_expression left: (identifier) right: (character_literal)) right: (binary_expression left: (identifier) right: (character_literal))) right: (binary_expression left: (identifier) right: (character_literal))) right: (binary_expression left: (identifier) right: (character_literal))) right: (binary_expression left: (identifier) right: (character_literal)))))))