class Person {
    String name;
    public Person() { }
    public Person(String theName) { this.name = theName; }
}

class Employee extends Person {
    String id;
    public Employee() { super(); }
    public Employee(String name) { super(name); }
    public Employee(String name, String id) {
        super(name);
        this.id = id;
    }
    @Override
    public String toString() { return "Employee [id=" + id + " name=" + name + "]";	}
}

public class EmployeeTest {

    public static void main(String[] args) {
        Employee e = new Employee("Kim", "20210001");
        System.out.println(e);
    }
}