public class EmployeeDeepClone implements Cloneable{

String name;

int age;

Date hireDate;

EmployeeDeepClone(String name, int age, Date hireDate){

this.name = name;

this.age = age;

this.hireDate = hireDate;

System.out.println("EmployeeDeepClone constructor called.");

}

@Override

protected Object clone() throws CloneNotSupportedException{

EmployeeDeepClone emp = (EmployeeDeepClone) super.clone();

if(hireDate != null){ // no point to clone a null object

emp.hireDate = new Date(hireDate.year, hireDate.month, hireDate.day);

}

return emp;

}

public static void main(String[] args) throws CloneNotSupportedException {

EmployeeDeepClone e1 = new EmployeeDeepClone("John Doe", 46, new Date(2000, 1, 20));

EmployeeDeepClone e2 = (EmployeeDeepClone) e1.clone();

System.out.println(e1 == e2); // output--false

System.out.println(e1.name == e2.name); // shallow clone output--true

System.out.println(e1.hireDate == e2.hireDate); // deep clone output -- false

System.out.println(e1.hireDate.year == e2.hireDate.year && e1.hireDate.month == e2.hireDate.month && e1.hireDate.day == e2.hireDate.day);

// verify the deep clone result. output -- true;

}

}