Examples of java.net.URLStreamHandler

java.net.URLStreamHandler
The abstract class URLStreamHandler is the common superclass for all stream protocol handlers. A stream protocol handler knows how to make a connection for a particular protocol type, such as http, ftp, or gopher.
In most cases, an instance of a URLStreamHandler subclass is not created directly by an application. Rather, the first time a protocol name is encountered when constructing a URL, the appropriate stream protocol handler is automatically loaded. @author James Gosling @version 1.73, 04/07/06 @see java.net.URL#URL(java.lang.String,java.lang.String,int,java.lang.String) @since JDK1.0

    * @return The protocol handler or null if not found
    */
   public URLStreamHandler createURLStreamHandler(final String protocol)
   {
      // Check the handler map
      URLStreamHandler handler = (URLStreamHandler) handlerMap.get(protocol);
      if( handler != null )
         return handler;


      // Validate that createURLStreamHandler is not recursing
      String prevProtocol = (String) createURLStreamHandlerProtocol.get();

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    * @return The protocol handler or null if not found
    */
   public URLStreamHandler createURLStreamHandler(final String protocol)
   {
      // Check the handler map
      URLStreamHandler handler = (URLStreamHandler) handlerMap.get(protocol);
      if( handler != null )
         return handler;


      // Validate that createURLStreamHandler is not recursing
      String prevProtocol = (String) createURLStreamHandlerProtocol.get();

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public class security implements Testlet
{
  public void test(TestHarness harness)
  {
    try {
      URLStreamHandler handler = new TestURLStreamHandler();


      URL context = new URL("http://www.redhat.com/");
      
      Permission[] specifyStreamHandler = new Permission[] {
  new NetPermission("specifyStreamHandler")};

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    public static void main(String argv[])
    {
        try
        {
            URL url = new URL("svgSalamander", "localhost", -1, "abc.svg",
                    new URLStreamHandler()
            {
                protected URLConnection openConnection(URL u)
                {
                    return null;
                }

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                        // it also has the right symbolic name
                        try {
                            new Version(bundleVersion);
                            // Do a file.toURI().toURL() to preserve special path characters
                            // see http://www.javalobby.org/java/forums/t19698.html
                            URL bundleUrl = new URL(null, jarFile.toURI().toURL().toString(), new URLStreamHandler() {


                                @Override
                                protected URLConnection openConnection(final URL u) throws IOException {
                                    return new URLConnection(u) {
                                        @Override

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        final String localProtocolScheme = "inline";
        URL.setURLStreamHandlerFactory(new URLStreamHandlerFactory() {
            @Override
            public URLStreamHandler createURLStreamHandler(String protocol) {
                if (localProtocolScheme.equalsIgnoreCase(protocol)) {
                    return new URLStreamHandler() {
                        @Override
                        protected URLConnection openConnection(URL u) throws IOException {
                            return new URLConnection(u) {
                                @Override
                                public void connect() throws IOException {

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        super.setUp();


        try {
            URL.setURLStreamHandlerFactory(new URLStreamHandlerFactory() {
                public URLStreamHandler createURLStreamHandler(String protocol) {
                    return new URLStreamHandler() {
                        protected URLConnection openConnection(URL u) throws IOException {
                            return null;
                        }
                    };
                }

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        // Now allow the URL handling to work.
        URLStreamHandlerFactory ushf = new URLStreamHandlerFactory(){
            @Override
            public URLStreamHandler createURLStreamHandler(String protocol) {
                if (protocol.equalsIgnoreCase(LOOPBACK)){
                    return new URLStreamHandler(){
                        @Override
                        protected URLConnection openConnection(URL u) throws IOException {
                            return null;// not needed for HttpClient
                        }
                    };

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            else
            {
                path = fsManager.resolveURI(file);
            }


            URLStreamHandler handler = new VFSURLStreamHandler(path);
            return new URL(null, path.getURI(), handler);
        }
        catch (FileSystemException fse)
        {
            throw new ConfigurationRuntimeException("Could not parse basePath: " + basePath

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            if (!file.exists())
            {
                return null;
            }
            FileName path = file.getName();
            URLStreamHandler handler = new VFSURLStreamHandler(path);
            return new URL(null, path.getURI(), handler);
        }
        catch (FileSystemException fse)
        {
            return null;

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