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RemoteException.java
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122 lines (113 loc) · 3.2 KB
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/*
* Copyright (c) 1996, 2003, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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package java.rmi;
/**
* A <code>RemoteException</code> is the common superclass for a number of
* communication-related exceptions that may occur during the execution of a
* remote method call. Each method of a remote interface, an interface that
* extends <code>java.rmi.Remote</code>, must list
* <code>RemoteException</code> in its throws clause.
*
* <p>As of release 1.4, this exception has been retrofitted to conform to
* the general purpose exception-chaining mechanism. The "wrapped remote
* exception" that may be provided at construction time and accessed via
* the public {@link #detail} field is now known as the <i>cause</i>, and
* may be accessed via the {@link Throwable#getCause()} method, as well as
* the aforementioned "legacy field."
*
* <p>Invoking the method {@link Throwable#initCause(Throwable)} on an
* instance of <code>RemoteException</code> always throws {@link
* IllegalStateException}.
*
* @author Ann Wollrath
* @since JDK1.1
*/
public class RemoteException extends java.io.IOException {
/* indicate compatibility with JDK 1.1.x version of class */
private static final long serialVersionUID = -5148567311918794206L;
/**
* The cause of the remote exception.
*
* <p>This field predates the general-purpose exception chaining facility.
* The {@link Throwable#getCause()} method is now the preferred means of
* obtaining this information.
*
* @serial
*/
public Throwable detail;
/**
* Constructs a <code>RemoteException</code>.
*/
public RemoteException() {
initCause(null); // Disallow subsequent initCause
}
/**
* Constructs a <code>RemoteException</code> with the specified
* detail message.
*
* @param s the detail message
*/
public RemoteException(String s) {
super(s);
initCause(null); // Disallow subsequent initCause
}
/**
* Constructs a <code>RemoteException</code> with the specified detail
* message and cause. This constructor sets the {@link #detail}
* field to the specified <code>Throwable</code>.
*
* @param s the detail message
* @param cause the cause
*/
public RemoteException(String s, Throwable cause) {
super(s);
initCause(null); // Disallow subsequent initCause
detail = cause;
}
/**
* Returns the detail message, including the message from the cause, if
* any, of this exception.
*
* @return the detail message
*/
public String getMessage() {
if (detail == null) {
return super.getMessage();
} else {
return super.getMessage() + "; nested exception is: \n\t" +
detail.toString();
}
}
/**
* Returns the cause of this exception. This method returns the value
* of the {@link #detail} field.
*
* @return the cause, which may be <tt>null</tt>.
* @since 1.4
*/
public Throwable getCause() {
return detail;
}
}