Custom Immutable class in java

package com.javatechie.interview.programming;

import java.util.Collections;
import java.util.Date;
import java.util.List;

final public class MyImmutable {

    final private int id;
    final private String name;
    final private Customer customer;
    final private List<String> list;
    final private Date date;

    public MyImmutable(int id, String name, Customer customer, List<String> list, Date date) {
        this.id = id;
        this.name = name;
        this.customer = customer;
        this.list = list;
        this.date = date;
    }

    public int getId() {
        return id;
    }

    public String getName() {
        return name;
    }

    public Customer getCustomer() throws CloneNotSupportedException {
        return (Customer) this.customer.clone();

    }

    public List<String> getList() {
        return Collections.unmodifiableList(this.list);
    }

    public Date getDate() {
        return (Date) date.clone();
    }

    public static void main(String[] args) {
        MyImmutable myImmutable = new MyImmutable(1, "javatechie", new Customer(), Collections.emptyList(), new Date());
        List<String> myList = myImmutable.list;
        myList.add("abc");
        System.out.println("Expected Exception : " + myList);

    }
}


package com.javatechie.interview.programming;

public class Customer implements  Cloneable {

    public Object clone() throws CloneNotSupportedException {
        return super.clone();
    }
}