public class Person{
    private String ID;
    private String name;
    private String address;


    public String getID() {
        return ID;
    }

    public void setID(String ID) {
        this.ID = ID;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public String getTelephone() {
        return telephone;
    }

    public void setTelephone(String telephone) {
        this.telephone = telephone;
    }

    private String telephone;

    public Person(){}

    public Person(String ID, String name, String address, String telephone) {
        this.ID = ID;
        this.name = name;
        this.address = address;
        this.telephone = telephone;
    }


    @Override
    /**
     * 仅仅是按照ID比较是否是同一个Person
     */
    public boolean equals(Object o) {
        if (this == o) return true;
        if (!(o instanceof Person)) return false;

        Person person = (Person) o;

        if (ID != null ? !ID.equals(person.ID) : person.ID != null) return false;

        return true;
    }

    @Override
    public int hashCode() {
        int result = ID != null ? ID.hashCode() : 0;
//        result = 31 * result + (name != null ? name.hashCode() : 0);
//        result = 31 * result + (address != null ? address.hashCode() : 0);
//        result = 31 * result + (telephone != null ? telephone.hashCode() : 0);
        return result;
    }

    @Override
    public String toString() {
        return "Person{" +
                "ID='" + ID + '\'' +
                ", name='" + name + '\'' +
                ", address='" + address + '\'' +
                ", telephone='" + telephone + '\'' +
                '}';
    }
}