JDBC Complex Query

ResultSet WSrs = WSs.executeQuery(
   "SELECT first_name, last_name, ssn, address, city, " + 
   "state, zip FROM employees");
 
// fetch data using complex query
...
WSs.executeQuery(
   "UPDATE employees SET address = ? " +
   "WHERE first_name = ? and last_name = ? and ssn = ? " +
   "and address = ? and city = ? and state = ? and zip = ?");