Person.java

package com.blogspot.toomuchcoding.person;

public class Person {
    public static final String UNDEFINED_COUTRY_NAME = "Undefined country";

    public static final String DEFAULT_NAME = "Lewandowski";

    private final String countryName;

    private final String name;

    public Person(String countryName) {
        this.countryName = countryName;
        this.name = DEFAULT_NAME;
    }

    public Person(Person person, String countryName) {
        this.countryName = countryName;
        this.name = person.name;
    }

    public Person() {
        this.countryName = UNDEFINED_COUTRY_NAME;
        this.name = DEFAULT_NAME;
    }

    public Person(String name, String countryName) {
        this.name = name;
        this.countryName = countryName;
    }

    public String getCountryName() {
        return countryName;
    }

    public boolean isCountryDefined() {
        return !UNDEFINED_COUTRY_NAME.equals(this.countryName);
    }

    public String getName() {
        return name;
    }
}