Java example source code file (ClientStackTrace.java)

This example Java source code file (ClientStackTrace.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

bytearrayoutputstream, clientstacktrace, myremoteinterface, myremoteobject, object, printstream, remoteexception, rmi, runtimeexception, string, this, unicastremoteobject

The ClientStackTrace.java Java example source code

/*
 * Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/* @test
 * @bug 4010355
 * @summary RemoteException should have server's stack trace
 *
 * @author Laird Dornin
 *
 * @library ../../testlibrary
 * @build TestLibrary ClientStackTrace MyRemoteObject_Stub
 * @run main/othervm/policy=security.policy/timeout=120 ClientStackTrace
 */

/*
 * This test ensures that the stack trace in a caught server side
 * remote exception contains the string "exceptionReceivedFromServer".
 */

import java.rmi.*;
import java.rmi.server.*;
import sun.rmi.transport.StreamRemoteCall;
import java.io.ByteArrayOutputStream;
import java.io.PrintStream;

interface MyRemoteInterface extends Remote {
    void ping() throws RemoteException;
}

class MyRemoteObject extends UnicastRemoteObject
    implements MyRemoteInterface {

    public MyRemoteObject () throws RemoteException {}

    public void ping () throws RemoteException {
        throw new RemoteException("This is a test remote exception");
    }
}

public class ClientStackTrace {
    Object dummy = new Object();

    public static void main(String[] args) {

        TestLibrary.suggestSecurityManager("java.rmi.RMISecurityManager");

        Object dummy = new Object();
        MyRemoteObject myRobj = null;
        MyRemoteInterface myStub = null;

        try {
            ByteArrayOutputStream bos = new ByteArrayOutputStream();
            PrintStream ps = new PrintStream(bos);

            System.err.println("\nRegression test for bug 4010355\n");

            myRobj = new MyRemoteObject();

            /* cause a remote exception to occur. */
            try {
                myStub = (MyRemoteInterface) RemoteObject.toStub(myRobj);
                myStub.ping();

            } catch (RemoteException re) {
                re.printStackTrace(ps);
                String trace = bos.toString();

                if (trace.indexOf("exceptionReceivedFromServer") <0 ) {
                    throw new RuntimeException("No client stack trace on " +
                                               "thrown remote exception");
                } else {
                    System.err.println("test passed with stack trace: " +
                                       trace);
                }
            }

            deactivate(myRobj);

        } catch (Exception e) {
            e.printStackTrace();
            System.err.println("test failed");
            throw new RuntimeException(e.getMessage());
        } finally {
            myRobj = null;
            myStub = null;
        }
    }

    // make sure that the remote object goes away.
    static void deactivate(RemoteServer r) {
        // make sure that the object goes away
        try {
            System.err.println("deactivating object.");
            UnicastRemoteObject.unexportObject(r, true);
        } catch (Exception e) {
            e.getMessage();
            e.printStackTrace();
        }
    }
}