alvinalexander.com | career | drupal | java | mac | mysql | perl | scala | uml | unix  

Java example source code file (SharedSecrets.java)

This example Java source code file (SharedSecrets.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

javacorbaaccess, security, sharedsecrets, unsafe

The SharedSecrets.java Java example source code

/*
 * Copyright (c) 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.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * 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.
 */

package sun.corba;

import com.sun.corba.se.impl.io.ValueUtility;
import sun.misc.Unsafe;

import java.security.AccessController;

/** A repository of "shared secrets", which are a mechanism for
    calling implementation-private methods in another package without
    using reflection. A package-private class implements a public
    interface and provides the ability to call package-private methods
    within that package; the object implementing that interface is
    provided through a third package to which access is restricted.
    This framework avoids the primary disadvantage of using reflection
    for this purpose, namely the loss of compile-time checking. */

// SharedSecrets cloned in corba repo to avoid build issues
public class SharedSecrets {
    private static final Unsafe unsafe = Unsafe.getUnsafe();
    private static JavaCorbaAccess javaCorbaAccess;

    public static JavaCorbaAccess getJavaCorbaAccess() {
        if (javaCorbaAccess == null) {
            // Ensure ValueUtility is initialized; we know that that class
            // provides the shared secret
            unsafe.ensureClassInitialized(ValueUtility.class);
        }
        return javaCorbaAccess;
    }

    public static void setJavaCorbaAccess(JavaCorbaAccess access) {
        javaCorbaAccess = access;
    }

}

Other Java examples (source code examples)

Here is a short list of links related to this Java SharedSecrets.java source code file:

... this post is sponsored by my books ...

#1 New Release!

FP Best Seller

 

new blog posts

 

Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.