DuplicateKeyException (Jakarta EE Platform API)

java.lang.Object
- java.lang.Throwable
- - java.lang.Exception
  - - jakarta.ejb.CreateException
    - - jakarta.ejb.DuplicateKeyException

All Implemented Interfaces:

Serializable
```
public class DuplicateKeyException
extends CreateException
```
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. This exception is thrown by the create methods defined in an entity bean's home or local home interface.
Note: Support for entity beans is optional as of EJB 3.2

Since:

EJB 1.0

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor	Description
`DuplicateKeyException()`	Constructs a DuplicateKeyException with no detail message.
`DuplicateKeyException(String message)`	Constructs a DuplicateKeyException with the specified detail message.

Method Summary
- Methods inherited from class java.lang.Throwable
  addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - DuplicateKeyException
```
public DuplicateKeyException()
```
    Constructs a DuplicateKeyException with no detail message.
  - DuplicateKeyException
```
public DuplicateKeyException(String message)
```
    Constructs a DuplicateKeyException with the specified detail message.
    
    Parameters:
    
    message - a String object.