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120 lines
3.6 KiB
120 lines
3.6 KiB
/*
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* Copyright (c) 1999, 2006, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*/
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package java.lang.reflect;
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/**
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* Thrown by a method invocation on a proxy instance if its invocation
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* handler's {@link InvocationHandler#invoke invoke} method throws a
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* checked exception (a {@code Throwable} that is not assignable
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* to {@code RuntimeException} or {@code Error}) that
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* is not assignable to any of the exception types declared in the
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* {@code throws} clause of the method that was invoked on the
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* proxy instance and dispatched to the invocation handler.
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*
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* <p>An {@code UndeclaredThrowableException} instance contains
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* the undeclared checked exception that was thrown by the invocation
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* handler, and it can be retrieved with the
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* {@code getUndeclaredThrowable()} method.
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* {@code UndeclaredThrowableException} extends
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* {@code RuntimeException}, so it is an unchecked exception
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* that wraps a checked exception.
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*
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* <p>As of release 1.4, this exception has been retrofitted to
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* conform to the general purpose exception-chaining mechanism. The
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* "undeclared checked exception that was thrown by the invocation
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* handler" that may be provided at construction time and accessed via
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* the {@link #getUndeclaredThrowable()} method is now known as the
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* <i>cause</i>, and may be accessed via the {@link
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* Throwable#getCause()} method, as well as the aforementioned "legacy
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* method."
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*
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* @author Peter Jones
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* @see InvocationHandler
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* @since 1.3
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*/
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public class UndeclaredThrowableException extends RuntimeException {
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static final long serialVersionUID = 330127114055056639L;
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/**
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* the undeclared checked exception that was thrown
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* @serial
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*/
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private Throwable undeclaredThrowable;
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/**
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* Constructs an {@code UndeclaredThrowableException} with the
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* specified {@code Throwable}.
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*
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* @param undeclaredThrowable the undeclared checked exception
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* that was thrown
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*/
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public UndeclaredThrowableException(Throwable undeclaredThrowable) {
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super((Throwable) null); // Disallow initCause
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this.undeclaredThrowable = undeclaredThrowable;
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}
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/**
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* Constructs an {@code UndeclaredThrowableException} with the
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* specified {@code Throwable} and a detail message.
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*
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* @param undeclaredThrowable the undeclared checked exception
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* that was thrown
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* @param s the detail message
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*/
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public UndeclaredThrowableException(Throwable undeclaredThrowable,
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String s)
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{
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super(s, null); // Disallow initCause
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this.undeclaredThrowable = undeclaredThrowable;
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}
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/**
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* Returns the {@code Throwable} instance wrapped in this
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* {@code UndeclaredThrowableException}, which may be {@code null}.
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*
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* <p>This method predates the general-purpose exception chaining facility.
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* The {@link Throwable#getCause()} method is now the preferred means of
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* obtaining this information.
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*
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* @return the undeclared checked exception that was thrown
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*/
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public Throwable getUndeclaredThrowable() {
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return undeclaredThrowable;
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}
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/**
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* Returns the cause of this exception (the {@code Throwable}
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* instance wrapped in this {@code UndeclaredThrowableException},
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* which may be {@code null}).
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*
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* @return the cause of this exception.
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* @since 1.4
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*/
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public Throwable getCause() {
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return undeclaredThrowable;
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}
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}
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