@Override
    public boolean equals(Object obj) {
        if (this == obj)
            return true;
        if (obj == null)
            return false;
        if (getClass() != obj.getClass())
            return false;
        FileTest other = (FileTest) obj;
        if (idCard == null) {
            if (other.idCard != null)
                return false;
        } else if (!idCard.equals(other.idCard))
            return false;
        if (name == null) {
            if (other.name != null)
                return false;
        } else if (!name.equals(other.name))
            return false;
        return true;
    }



public static void main(String[] args) {
        Person p1 = new Person("1001", "刘德福");
        Person p2 = new Person("1001", "刘德华");
        System.out.println(p1.equals(p2));
        ;
    }