JPA - @CollectionTable Examples

@Entity
public class Customer {
    @Id
    @GeneratedValue
    private int id;
    private String name;
    @ElementCollection
    @CollectionTable(name = "PHONES", joinColumns = @JoinColumn(name = "CUST_ID"))
    @Column(name = "PH_NO")
    private List<String> phoneNumbers;

    public String getName() {
        return name;
    }

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

    public List<String> getPhoneNumbers() {
        return phoneNumbers;
    }

    public void setPhoneNumbers(List<String> phoneNumbers) {
        this.phoneNumbers = phoneNumbers;
    }

    @Override
    public String toString() {
        return "Customer{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", phoneNumbers=" + phoneNumbers +
                '}';
    }
}

@Entity
public class Customer {
    @Id
    @GeneratedValue
    private int id;

    private String name;
    @ElementCollection
    @MapKeyColumn(name = "item")
    @Column(name = "qty")
    @CollectionTable(name = "ITEM_QTY")
    private Map<String, Integer> itemQtyMap;
    .............
}

@Entity
public class Customer {
    @Id
    @GeneratedValue
    private int id;
    private String name;
    @ElementCollection
    @CollectionTable(name = "ORDERS")
    @MapKeyColumn(name = "TYPE")
    private Map<String, Order> orderMap;
    .............
}

@Embeddable
public class Order {
    private String item;
    private int qty;
    private Date date;
    .............
}

@Entity
public class Customer {
    @Id
    @GeneratedValue
    private int id;
    private String name;

    @ElementCollection
    @CollectionTable(name = "ORDERS", joinColumns = @JoinColumn(name = "CUST_ID"))
    @Column(name = "ORDER_TYPE")
    private Map<Order, String> orders;
    .............
}

@Embeddable
public class Order {
    private String item;
    private int qty;
    private Date date;
    .............
}

@Entity
public class Employee {
    @Id
    @GeneratedValue
    private long id;
    private String name;
    @ElementCollection
    @CollectionTable(name = "EMP_TASKS", joinColumns = @JoinColumn(name = "EMP_ID"))
    @MapKeyJoinColumn(name = "TASK_ID")
    @Column(name = "TASK_DATE")
    private Map<Task, Date> taskMap;
    .............
}

@Entity
public class Task {
    @Id
    @GeneratedValue
    private long id;
    private String name;
    private String description;
    .............
}