Documentation  › java.lang.reflect  › UndeclaredThrowableException
 
 


  UndeclaredThrowableException
  public

  Inherits From:   RuntimeException : Exception : Throwable : Object
  Conforms To:   none
  Declared In:   java.lang.reflect


Exception Description
 
Thrown by a method invocation on a proxy instance if its invocation handler's invoke method throws a checked exception (a Throwable that is not assignable to RuntimeException or Error) that is not assignable to any of the exception types declared in the throws clause of the method that was invoked on the proxy instance and dispatched to the invocation handler.

An UndeclaredThrowableException instance contains the undeclared checked exception that was thrown by the invocation handler, and it can be retrieved with the getUndeclaredThrowable() method. UndeclaredThrowableException extends RuntimeException, so it is an unchecked exception that wraps a checked exception.

As of release 1.4, this exception has been retrofitted to conform to the general purpose exception-chaining mechanism. The "undeclared checked exception that was thrown by the invocation handler" that may be provided at construction time and accessed via the getUndeclaredThrowable() method is now known as the cause, and may be accessed via the getCause() method, as well as the aforementioned "legacy method."



Class Variables
 
None declared in this exception.


Instance Variables
 
None declared in this exception.


Constructors
 
UndeclaredThrowableException
public UndeclaredThrowableException( Throwable undeclaredThrowable )

Constructs an UndeclaredThrowableException with the specified Throwable.


UndeclaredThrowableException
public UndeclaredThrowableException( Throwable undeclaredThrowable, String s )

Constructs an UndeclaredThrowableException with the specified Throwable and a detail message.


Class Methods
 
None declared in this exception.


Instance Methods
 
getCause
public Throwable getCause( )

Returns the the cause of this exception (the Throwable instance wrapped in this UndeclaredThrowableException, which may be null).


getUndeclaredThrowable
public Throwable getUndeclaredThrowable( )

Returns the Throwable instance wrapped in this UndeclaredThrowableException, which may be null.

This method predates the general-purpose exception chaining facility. The getCause() method is now the preferred means of obtaining this information.



Known Subclasses
 
None.



 
 
  dydoc
  3/10/05