Examples of java.security.PrivilegedExceptionAction

java.security.PrivilegedExceptionAction
A computation to be performed with privileges enabled, that throws one or more checked exceptions. The computation is performed by invoking AccessController.doPrivileged on the PrivilegedExceptionAction object. This interface is used only for computations that throw checked exceptions; computations that do not throw checked exceptions should use PrivilegedAction instead. @see AccessController @see AccessController#doPrivileged(PrivilegedExceptionAction) @see AccessController#doPrivileged(PrivilegedExceptionAction,AccessControlContext) @see PrivilegedAction

  if (impl == null)
      return;
  // SocketImpl.connect() is a protected method, therefore we need to use
  // getDeclaredMethod, therefore we need permission to access the member
  try {
      AccessController.doPrivileged(new PrivilegedExceptionAction() {
        public Object run() throws NoSuchMethodException {
      Class[] cl = new Class[2];
      cl[0] = SocketAddress.class;
      cl[1] = Integer.TYPE;
      impl.getClass().getDeclaredMethod("connect", cl);

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    server = ((InetSocketAddress) p.address()).getHostString();
    port = ((InetSocketAddress) p.address()).getPort();
    
    // Connects to the SOCKS server
    try {
        AccessController.doPrivileged(new PrivilegedExceptionAction() {
          public Object run() throws Exception {
        cmdsock = new Socket(new PlainSocketImpl());
        cmdsock.connect(new InetSocketAddress(server, port));
        cmdIn = cmdsock.getInputStream();
        cmdOut = cmdsock.getOutputStream();
        return null;
          }
      });
    } catch (Exception e) {
        // Ooops, let's notify the ProxySelector
        sel.connectFailed(uri,p.address(),new SocketException(e.getMessage()));
        server = null;
        port = -1;
        cmdsock = null;
        savedExc = e;
        // Will continue the while loop and try the next proxy
    }
      }


      /*
       * If server is still null at this point, none of the proxy
       * worked
       */
      if (server == null || cmdsock == null) {
    throw new SocketException("Can't connect to SOCKS proxy:" 
            + savedExc.getMessage());
      }
  } else {
      try {
    AccessController.doPrivileged(new PrivilegedExceptionAction() {
      public Object run() throws Exception {
          cmdsock = new Socket(new PlainSocketImpl());
          cmdsock.connect(new InetSocketAddress(server, port));
          cmdIn = cmdsock.getInputStream();
          cmdOut = cmdsock.getOutputStream();

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        throws IOException, MissingResourceException {


        BufferedInputStream in;
        try {
            in = (BufferedInputStream)AccessController.doPrivileged(
                new PrivilegedExceptionAction() {
                    public Object run() throws Exception {
                        return new BufferedInputStream(getClass().getResourceAsStream("/sun/text/resources/" + dictionaryName));
                    }
                }
            );

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      throw new SocketException("Socket input is shutdown");
  final Socket s = this;
  InputStream is = null;
  try {
      is = (InputStream)
    AccessController.doPrivileged(new PrivilegedExceptionAction() {
        public Object run() throws IOException {
      return impl.getInputStream();
        }
    });
  } catch (java.security.PrivilegedActionException e) {

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      throw new SocketException("Socket output is shutdown");
  final Socket s = this;
  OutputStream os = null;
  try {
      os = (OutputStream)
    AccessController.doPrivileged(new PrivilegedExceptionAction() {
        public Object run() throws IOException {
      return impl.getOutputStream();
        }
    });
  } catch (java.security.PrivilegedActionException e) {

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            sun.misc.Launcher l = sun.misc.Launcher.getLauncher();
      if (l != null) {
    Throwable oops = null;
    scl = l.getClassLoader();
          try {
        PrivilegedExceptionAction a;
        a = new SystemClassLoaderAction(scl);
                    scl = (ClassLoader) AccessController.doPrivileged(a);
          } catch (PrivilegedActionException pae) {
        oops = pae.getCause();
              if (oops instanceof InvocationTargetException) {

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  if (impl == null)
      return;
  // DatagramSocketImpl.peekdata() is a protected method, therefore we need to use
  // getDeclaredMethod, therefore we need permission to access the member
  try {
      AccessController.doPrivileged(new PrivilegedExceptionAction() {
        public Object run() throws NoSuchMethodException {
      Class[] cl = new Class[1];
      cl[0] = DatagramPacket.class;
      impl.getClass().getDeclaredMethod("peekData", cl);
      return null;

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        throws IOException, MissingResourceException {


        BufferedInputStream is;
        try {
            is = (BufferedInputStream)AccessController.doPrivileged(
                new PrivilegedExceptionAction() {
                    public Object run() throws Exception {
                        return new BufferedInputStream(getClass().getResourceAsStream("/sun/text/resources/" + datafile));
                    }
                }
            );

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

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

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