import java.util.Objects;

public abstract class Person {

	private String firstname;
	private String lastname;
	private String gender;
	private String email;

	public Person(String firstname, String lastname, String gender, String email) {
		this.firstname = firstname;
		this.lastname = lastname;
		this.gender = gender;
		this.email = email;
	}

	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 String getGender() {
		return gender;
	}

	public void setGender(String gender) {
		this.gender = gender;
	}

	public String getEmail() {
		return email;
	}

	public void setEmail(String email) {
		this.email = email;
	}

	@Override
	public String toString() {
		return firstname + " " + lastname;
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		Person other = (Person) obj;
		if (email == null) {
			if (other.email != null)
				return false;
		} else if (!email.equals(other.email))
			return false;
		if (firstname == null) {
			if (other.firstname != null)
				return false;
		} else if (!firstname.equals(other.firstname))
			return false;
		if (gender == null) {
			if (other.gender != null)
				return false;
		} else if (!gender.equals(other.gender))
			return false;
		if (lastname == null) {
			if (other.lastname != null)
				return false;
		} else if (!lastname.equals(other.lastname))
			return false;
		return true;
	}

	@Override
	public int hashCode() {
		return Objects.hash(firstname, lastname, gender, email);
	}
}