/*
 *
 * Copyright (c) 2000, 2002, Oracle and/or its affiliates. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or
 * without modification, are permitted provided that the following
 * conditions are met:
 *
 * -Redistributions of source code must retain the above copyright
 * notice, this  list of conditions and the following disclaimer.
 *
 * -Redistribution in binary form must reproduct the above copyright
 * notice, this list of conditions and the following disclaimer in
 * the documentation and/or other materials provided with the
 * distribution.
 *
 * Neither the name of Oracle nor the names of
 * contributors may be used to endorse or promote products derived
 * from this software without specific prior written permission.
 *
 * This software is provided "AS IS," without a warranty of any
 * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
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 */

package sample;

import java.io.File;
import java.security.PrivilegedAction;

/**
 * <p> This is a Sample PrivilegedAction implementation, designed to be
 * used with the Sample application.
 *
 */
public class SampleAction implements PrivilegedAction {

    /**
     * <p> This Sample PrivilegedAction performs the following operations:
     * <ul>
     * <li> Access the System property, <i>java.home</i>
     * <li> Access the System property, <i>user.home</i>
     * <li> Access the file, <i>foo.txt</i>
     * </ul>
     *
     * @return <code>null</code> in all cases.
     *
     * @exception SecurityException if the caller does not have permission
     *          to perform the operations listed above.
     */
    public Object run() {
        System.out.println("\nYour java.home property: "
                            +System.getProperty("java.home"));

        System.out.println("\nYour user.home property: "
                            +System.getProperty("user.home"));

        File f = new File("foo.txt");
        System.out.print("\nfoo.txt does ");
        if (!f.exists())
            System.out.print("not ");
        System.out.println("exist in the current working directory.");
        return null;
    }
}