Class UndeclaredThrowableException

java.lang.reflect.UndeclaredThrowableException

All Implemented Interfaces:: Serializable

public class UndeclaredThrowableException extends RuntimeException

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.

Since:

1.3

See Also:

Constructor Summary

Constructor	Description
`UndeclaredThrowableException(Throwable undeclaredThrowable)`	Constructs an `UndeclaredThrowableException` with the specified `Throwable`.
`UndeclaredThrowableException(Throwable undeclaredThrowable, String s)`	Constructs an `UndeclaredThrowableException` with the specified `Throwable` and a detail message.

Method Summary

Modifier and Type	Method	Description
`Throwable`	`getUndeclaredThrowable()`	Returns the `Throwable` instance wrapped in this `UndeclaredThrowableException`, which may be `null`.

Methods declared in class Throwable

addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString

Methods declared in class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

UndeclaredThrowableException

public UndeclaredThrowableException(Throwable undeclaredThrowable)

Constructs an UndeclaredThrowableException with the specified Throwable.

Parameters:: undeclaredThrowable - the undeclared checked exception that was thrown

UndeclaredThrowableException

public UndeclaredThrowableException(Throwable undeclaredThrowable, String s)

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

Parameters:: undeclaredThrowable - the undeclared checked exception that was thrown; s - the detail message

Method Details

getUndeclaredThrowable

public Throwable getUndeclaredThrowable()

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

API Note:: This method predates the general-purpose exception chaining facility. The Throwable.getCause() method is now the preferred means of obtaining this information.
Returns:: the undeclared checked exception that was thrown

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https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/lang/reflect/UndeclaredThrowableException.html