static ClassLoader getContextClassLoader() 
{
        return (ClassLoader)
        AccessController.doPrivileged(new PrivilegedAction() {
            public Object run() {
                ClassLoader cl = null;
                try {
                    cl = Thread.currentThread().getContextClassLoader();
                } catch (SecurityException ex) { }
                return cl;
            }
        });
}

 static boolean getFileExists(File f) 
{
        return ((Boolean)
                AccessController.doPrivileged(new PrivilegedAction() {
                    public Object run() {
                        return f.exists() ? Boolean.TRUE : Boolean.FALSE;
                    }
                })).booleanValue();
}

 static FileInputStream getFileInputStream(File file) throws FileNotFoundException 
{
        try {
            return (FileInputStream)
            AccessController.doPrivileged(new PrivilegedExceptionAction() {
                public Object run() throws FileNotFoundException {
                    return new FileInputStream(file);
                }
            });
        } catch (PrivilegedActionException e) {
            throw (FileNotFoundException)e.getException();
        }
}

 static long getLastModified(File f) 
{
        return ((Long)
                AccessController.doPrivileged(new PrivilegedAction() {
                    public Object run() {
                        return new Long(f.lastModified());
                    }
                })).longValue();
}

 static ClassLoader getParentClassLoader(ClassLoader cl) 
{
        return (ClassLoader)
        AccessController.doPrivileged(new PrivilegedAction() {
            public Object run() {
                ClassLoader parent = null;
                try {
                    parent = cl.getParent();
                } catch (SecurityException ex) {}
                // eliminate loops in case of the boot
                // ClassLoader returning itself as a parent
                return (parent == cl) ? null : parent;
            }
        });
}

 static InputStream getResourceAsStream(ClassLoader cl,
    String name) 
{
        return (InputStream)
        AccessController.doPrivileged(new PrivilegedAction() {
            public Object run() {
                InputStream ris;
                if (cl == null) {
                    ris = ClassLoader.getSystemResourceAsStream(name);
                } else {
                    ris = cl.getResourceAsStream(name);
                }
                return ris;
            }
        });
}

 static ClassLoader getSystemClassLoader() 
{
        return (ClassLoader)
        AccessController.doPrivileged(new PrivilegedAction() {
            public Object run() {
                ClassLoader cl = null;
                try {
                    cl = ClassLoader.getSystemClassLoader();
                } catch (SecurityException ex) {}
                return cl;
            }
        });
}

 static String getSystemProperty(String propName) 
{
        return (String)
        AccessController.doPrivileged(new PrivilegedAction() {
            public Object run() {
                return System.getProperty(propName);
            }
        });
}