DB structure:
table users
id INTEGER (PK) AUTO_INCREMENT
username VARCHAR
password VARCHAR

table user_address
user_id INTEGER (PK)
city VARCHAR
state VARCHAR
country VARCHAR
CONSTRAINT `user_address` FOREIGN KEY (`user_id`) REFERENCES `users` (`id`)

Class:
public class User implements Serializable {
private int id;
private String username;
private String password;
private Address address= new Address();
getters & setters

}
public class Address implements Serializable {
private int userId;
private String city;
private String state;
private String country;
getters & setters
}
For the above details pls send me the User.hbm.xml & Address.hbm.xml