Example 1:

 [MappedSuperclass]
 public class Employee {
     [Id] protected Integer id;
     [Version] protected Integer version;
     protected String address;
     public Integer getId() { ... }
     public void setId(Integer id) { ... }
     public String getAddress() { ... }
     public void setAddress(String address) { ... }
 }

 [Entity]
 [AttributeOverride(PropertyName="address", Name="ADDR"))]
 public class PartTimeEmployee extends Employee {
     // address field mapping overridden to ADDR
     protected Float wage();
     public Float getHourlyWage() { ... }
     public void setHourlyWage(Float wage) { ... }
 }


 Example 2:

 [Embeddable] public class Address {
     protected String street;
     protected String city;
     protected String state;
     [Embedded] protected Zipcode zipcode;
 }

 [Embeddable] public class Zipcode {
     protected String zip;
     protected String plusFour;
 }

 [Entity] public class Customer {
     [Id] protected Integer id;
     protected String name;
     [AttributeOverride(PropertyName="state", Name="ADDR_STATE")]
     [AttributeOverride(PropertyName="zipcode.zip", Name="ADDR_ZIP")]
     })
     [Embedded] protected Address address;
     ...
 }


 Example 3:

 [Entity] public class PropertyRecord {
     [Embedded]Id PropertyOwner owner;
     [AttributeOverride(PropertyName="key.street", Name="STREET_NAME")]
     [AttributeOverride(PropertyName="value.size", Name="SQUARE_FEET")]
     [AttributeOverride(PropertyName="value.tax", Name="ASSESSMENT")]

    [ElementCollection]
    Dictionary<Address, PropertyInfo> parcels;
 }

[Embeddable] public class PropertyInfo {
    Integer parcelNumber;
    Integer size;
    BigDecimal tax;
}