/*
* @(#)UndeclaredThrowableException.java 1.15 06/04/07
*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
package java.lang.reflect;
/**
* Thrown by a method invocation on a proxy instance if its invocation
* handler's {@link InvocationHandler#invoke invoke} method throws a
* checked exception (a <code>Throwable</code> that is not assignable
* to <code>RuntimeException</code> or <code>Error</code>) that
* is not assignable to any of the exception types declared in the
* <code>throws</code> clause of the method that was invoked on the
* proxy instance and dispatched to the invocation handler.
*
* <p>An <code>UndeclaredThrowableException</code> instance contains
* the undeclared checked exception that was thrown by the invocation
* handler, and it can be retrieved with the
* <code>getUndeclaredThrowable()</code> method.
* <code>UndeclaredThrowableException</code> extends
* <code>RuntimeException</code>, so it is an unchecked exception
* that wraps a checked exception.
*
* <p>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 {@link #getUndeclaredThrowable()} method is now known as the
* <i>cause</i>, and may be accessed via the {@link
* Throwable#getCause()} method, as well as the aforementioned "legacy
* method."
*
* @author Peter Jones
* @version 1.15, 06/04/07
* @see InvocationHandler
* @since 1.3
*/
public class UndeclaredThrowableException extends RuntimeException {
static final long serialVersionUID = 330127114055056639L;
/**
* the undeclared checked exception that was thrown
* @serial
*/
private Throwable undeclaredThrowable;
/**
* Constructs an <code>UndeclaredThrowableException</code> with the
* specified <code>Throwable</code>.
*
* @param undeclaredThrowable the undeclared checked exception
* that was thrown
*/
public UndeclaredThrowableException(Throwable undeclaredThrowable) {
super((Throwable) null); // Disallow initCause
this.undeclaredThrowable = undeclaredThrowable;
}
/**
* Constructs an <code>UndeclaredThrowableException</code> with the
* specified <code>Throwable</code> and a detail message.
*
* @param undeclaredThrowable the undeclared checked exception
* that was thrown
* @param s the detail message
*/
public UndeclaredThrowableException(Throwable undeclaredThrowable,
String s)
{
super(s, null); // Disallow initCause
this.undeclaredThrowable = undeclaredThrowable;
}
/**
* Returns the <code>Throwable</code> instance wrapped in this
* <code>UndeclaredThrowableException</code>, which may be <tt>null</tt>.
*
* <p>This method predates the general-purpose exception chaining facility.
* The {@link Throwable#getCause()} method is now the preferred means of
* obtaining this information.
*
* @return the undeclared checked exception that was thrown
*/
public Throwable getUndeclaredThrowable() {
return undeclaredThrowable;
}
/**
* Returns the cause of this exception (the <code>Throwable</code>
* instance wrapped in this <code>UndeclaredThrowableException</code>,
* which may be <tt>null</tt>).
*
* @return the cause of this exception.
* @since 1.4
*/
public Throwable getCause() {
return undeclaredThrowable;
}
}