how to create an object using design pattern with if else ?

Imagine I have a class with some required fields and some optional fields and I fill it from xml.

public class Person {
    //mandatory 
    private String FirstName;
    private String lastName;
    private int Age;

    //optional
    String city;
    String Country;
    String Street;
    Person Spouse;
    String Occuption;




    public String getFirstName() {
        return FirstName;
    }
    public String getLastName() {
        return lastName;
    }
    public int getAge() {
        return Age;
    }
    public String getCity() {
        return city;
    }
    public void setCity(String city) {
        this.city = city;
    }
    public String getCountry() {
        return Country;
    }
    public void setCountry(String country) {
        Country = country;
    }
    public String getStreet() {
        return Street;
    }
    public void setStreet(String street) {
        Street = street;
    }
    public Person getSpouse() {
        return Spouse;
    }
    public void setSpouse(Person spouse) {
        Spouse = spouse;
    }
    public String getOccuption() {
        return Occuption;
    }
    public void setOccuption(String occuption) {
        Occuption = occuption;
    } 


}

now in main method I will build this object using java beans ( setters)

public static void main(String[] args) {
    // TODO Auto-generated method stub
    //just for testing field 
    String xmlParamCity="";
    String xmlParamCountry="";
    String xmlParamStreet="";
    Person newPerson = new Person("Fname", "lastName", 0);

    //optional fields 
    if(!xmlParamStreet.isEmpty())
        newPerson.setStreet(xmlParamStreet);
    if(!xmlParamCity.isEmpty())
        newPerson.setStreet(xmlParamCity);
    if(!xmlParamCountry.isEmpty())
        newPerson.setStreet(xmlParamCountry);

}

is it a good approach to use builder design pattern to create this object from xml ? if yes how to build the person objects using builder pattern with these if else checks ? any better design pattern I should use ?