src/share/classes/sun/security/action/LoadLibraryAction.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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.
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 * 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).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 *
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package sun.security.action;

/**
 * A convenience class for loading a system library as a privileged action.
 *
 * <p>An instance of this class can be used as the argument of
 * <code>AccessController.doPrivileged</code>.
 *
 * <p>The following code attempts to load the system library named
 * <code>"lib"</code> as a privileged action: <p>
 *
 * <pre>
 * java.security.AccessController.doPrivileged(new LoadLibraryAction("lib"));
 * </pre>
 *
 * @author Roland Schemers
 * @see java.security.PrivilegedAction
 * @see java.security.AccessController
 * @since 1.2
 */

public class LoadLibraryAction implements java.security.PrivilegedAction<Void> {
    private String theLib;

    /**
     * Constructor that takes the name of the system library that needs to be
     * loaded.
     *
     * <p>The manner in which a library name is mapped to the
     * actual system library is system dependent.
     *
     * @param theLib the name of the library.
     */
    public LoadLibraryAction(String theLib) {
        this.theLib = theLib;
    }

    /**
     * Loads the system library whose name was specified in the constructor.
     */
    public Void run() {
        System.loadLibrary(theLib);
        return null;
    }
}