public static int rotate ( int number ) {
  int help = number % 10 * 1000 ;
  number /= 10 ;
  return number + help ;
}

public static int rotate ( int number ) { int help = number % 10 * 1000 ; number /= 10 ; return number + help ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (decimal_integer_literal)))) (expression_statement (assignment_expression left: (identifier) right: (decimal_integer_literal))) (return_statement (binary_expression left: (identifier) right: (identifier)))))