JavaBeanとXMLの相互変換ツールクラスの詳細な紹介

public class Person {
	 
	 private String firstname;
	 private String lastname;
	 private PhoneNumber phone;
	 private PhoneNumber fax;
	 
	 public Person(String firstname,String lastname){
		 this.firstname = firstname; 
		 this.lastname = lastname; 
	 }
	
	 public String getFirstname() {
		return firstname;
	}
	public void setFirstname(String firstname) {
		this.firstname = firstname;
	}
	public String getLastname() {
		return lastname;
	}
	public void setLastname(String lastname) {
		this.lastname = lastname;
	}
	public PhoneNumber getPhone() {
		return phone;
	}
	public void setPhone(PhoneNumber phone) {
		this.phone = phone;
	}
	public PhoneNumber getFax() {
		return fax;
	}
	public void setFax(PhoneNumber fax) {
		this.fax = fax;
	}
	 
	
}

public class PhoneNumber {
	private int code;
	private String number;
	
	public PhoneNumber(int code,String number){
		this.code = code;
		this.number = number;
	}
	
	public int getCode() {
		return code;
	}
	public void setCode(int code) {
		this.code = code;
	}
	public String getNumber() {
		return number;
	}
	public void setNumber(String number) {
		this.number = number;
	}
}