Serializablepublic class UndeclaredThrowableException extends RuntimeException
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.
| Constructor | Description | 
|---|---|
| UndeclaredThrowableException | Constructs an  UndeclaredThrowableExceptionwith the specifiedThrowable. | 
| UndeclaredThrowableException | Constructs an  UndeclaredThrowableExceptionwith the specifiedThrowableand a detail message. | 
| Modifier and Type | Method | Description | 
|---|---|---|
| Throwable | getUndeclaredThrowable() | Returns the  Throwableinstance wrapped in thisUndeclaredThrowableException, which may benull. | 
addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString
public UndeclaredThrowableException(Throwable undeclaredThrowable)
UndeclaredThrowableException with the specified Throwable.undeclaredThrowable - the undeclared checked exception that was thrownpublic UndeclaredThrowableException(Throwable undeclaredThrowable, String s)
UndeclaredThrowableException with the specified Throwable and a detail message.undeclaredThrowable - the undeclared checked exception that was throwns - the detail messagepublic Throwable getUndeclaredThrowable()
Throwable instance wrapped in this UndeclaredThrowableException, which may be null.Throwable.getCause() method is now the preferred means of obtaining this information.
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    https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/lang/reflect/UndeclaredThrowableException.html