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123 lines
3.2 KiB
123 lines
3.2 KiB
/*
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* Copyright (c) 1996, 2003, 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.rmi;
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/**
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* A <code>RemoteException</code> is the common superclass for a number of
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* communication-related exceptions that may occur during the execution of a
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* remote method call. Each method of a remote interface, an interface that
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* extends <code>java.rmi.Remote</code>, must list
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* <code>RemoteException</code> in its throws clause.
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*
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* <p>As of release 1.4, this exception has been retrofitted to conform to
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* the general purpose exception-chaining mechanism. The "wrapped remote
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* exception" that may be provided at construction time and accessed via
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* the public {@link #detail} field is now known as the <i>cause</i>, and
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* may be accessed via the {@link Throwable#getCause()} method, as well as
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* the aforementioned "legacy field."
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*
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* <p>Invoking the method {@link Throwable#initCause(Throwable)} on an
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* instance of <code>RemoteException</code> always throws {@link
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* IllegalStateException}.
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*
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* @author Ann Wollrath
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* @since JDK1.1
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*/
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public class RemoteException extends java.io.IOException {
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/* indicate compatibility with JDK 1.1.x version of class */
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private static final long serialVersionUID = -5148567311918794206L;
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/**
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* The cause of the remote exception.
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*
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* <p>This field 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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* @serial
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*/
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public Throwable detail;
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/**
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* Constructs a <code>RemoteException</code>.
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*/
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public RemoteException() {
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initCause(null); // Disallow subsequent initCause
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}
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/**
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* Constructs a <code>RemoteException</code> with the specified
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* detail message.
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*
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* @param s the detail message
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*/
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public RemoteException(String s) {
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super(s);
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initCause(null); // Disallow subsequent initCause
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}
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/**
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* Constructs a <code>RemoteException</code> with the specified detail
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* message and cause. This constructor sets the {@link #detail}
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* field to the specified <code>Throwable</code>.
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*
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* @param s the detail message
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* @param cause the cause
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*/
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public RemoteException(String s, Throwable cause) {
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super(s);
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initCause(null); // Disallow subsequent initCause
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detail = cause;
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}
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/**
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* Returns the detail message, including the message from the cause, if
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* any, of this exception.
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*
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* @return the detail message
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*/
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public String getMessage() {
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if (detail == null) {
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return super.getMessage();
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} else {
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return super.getMessage() + "; nested exception is: \n\t" +
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detail.toString();
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}
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}
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/**
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* Returns the cause of this exception. This method returns the value
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* of the {@link #detail} field.
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*
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* @return the cause, which may be <tt>null</tt>.
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* @since 1.4
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*/
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public Throwable getCause() {
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return detail;
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}
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}
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