| Package | Description | 
|---|---|
| jakarta.ejb | 
 Contains the Enterprise Bean classes
and interfaces that define the contracts between the enterprise bean 
and its clients and between the enterprise bean and the enterprise bean container. 
 | 
| Modifier and Type | Class and Description | 
|---|---|
class  | 
DuplicateKeyException
The DuplicateKeyException exception is thrown if an entity EJB object or enterprise bean local object cannot be
 created because an object with the same key already exists. 
 | 
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