DuplicateKeyException (Java EE 5)

Java EE API

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javax.ejb Class DuplicateKeyException

java.lang.Object
  java.lang.Throwable
      java.lang.Exception
          javax.ejb.CreateException
              javax.ejb.DuplicateKeyException

All Implemented Interfaces:: Serializable

public class DuplicateKeyException
extends CreateException

Extends: Throwable > Exception > CreateException

如果因为具有相同键的对象已存在而不能创建实体 EJB 对象，则抛出 DuplicateKeyException 异常。此异常由实体 Bean 的 home 接口中定义的创建方法抛出。

英文文档：

The DuplicateKeyException exception is thrown if an entity EJB 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 interface.

See Also:: Serialized Form

Constructor Summary
`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
`fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, 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

public DuplicateKeyException()
构造不带详细消息的 DuplicateKeyException。

英文文档：
DuplicateKeyException

public DuplicateKeyException()

Constructs a DuplicateKeyException with no detail message.

public DuplicateKeyException(String message)
构造带指定详细消息的 DuplicateKeyException。

英文文档：
DuplicateKeyException

public DuplicateKeyException(String message)

Constructs a DuplicateKeyException with the specified detail message.