Examples of java.net.Authenticator

java.net.Authenticator
The class Authenticator represents an object that knows how to obtain authentication for a network connection. Usually, it will do this by prompting the user for information.
Applications use this class by overriding {@link #getPasswordAuthentication()} in a sub-class. This method willtypically use the various getXXX() accessor methods to get information about the entity requesting authentication. It must then acquire a username and password either by interacting with the user or through some other non-interactive means. The credentials are then returned as a {@link PasswordAuthentication} return value.
An instance of this concrete sub-class is then registered with the system by calling {@link #setDefault(Authenticator)}. When authentication is required, the system will invoke one of the requestPasswordAuthentication() methods which in turn will call the getPasswordAuthentication() method of the registered object.
All methods that request authentication have a default implementation that fails. @see java.net.Authenticator#setDefault(java.net.Authenticator) @see java.net.Authenticator#getPasswordAuthentication() @author Bill Foote @version 1.33, 11/17/05 @since 1.2

            System.getProperties().put( "proxyHost", proxyHost );
            System.getProperties().put( "proxyPort", proxyPort );


            if ( proxyUserName != null )
            {
                Authenticator.setDefault( new Authenticator()
                {
                    protected PasswordAuthentication getPasswordAuthentication()
                    {
                        return new PasswordAuthentication( proxyUserName, proxyPassword == null ? new char[0]
                                                                                               : proxyPassword

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        final String authTestUrl = "http://localhost:" + server.getPort()
                + Support_HttpServer.AUTHTEST;


        // Authentication test
        // set up a very simple authenticator
        Authenticator.setDefault(new Authenticator() {
            public PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication("test", "password"
                        .toCharArray());
            }
        });

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                lock.wait();
            } catch (InterruptedException e) {
                // ignored
            }
        }
        Authenticator.setDefault(new Authenticator() {
            protected PasswordAuthentication getPasswordAuthentication() {
                synchronized (lock) {
                    result[0] = 1;
                }
                return null;
            }
        });
        Authenticator.setDefault(new Authenticator() {
            protected PasswordAuthentication getPasswordAuthentication() {
                synchronized (lock) {
                    result[0] = 2;
                }
                return null;

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        }
    }


    public void testProxyAuthorization() throws Exception {
        // Set up test Authenticator
        Authenticator.setDefault(new Authenticator() {
            @Override
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication("user", "password"
                        .toCharArray());
            }

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            // create the HostnameVerifier to check that Hostname verification
            // is done
            TestHostnameVerifier hnv = new TestHostnameVerifier();
            HttpsURLConnection.setDefaultHostnameVerifier(hnv);


            Authenticator.setDefault(new Authenticator() {


                protected PasswordAuthentication getPasswordAuthentication() {
                    return new PasswordAuthentication("user", "password"
                            .toCharArray());
                }

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            // create the HostnameVerifier to check that Hostname verification
            // is done
            TestHostnameVerifier hnv = new TestHostnameVerifier();
            HttpsURLConnection.setDefaultHostnameVerifier(hnv);


            Authenticator.setDefault(new Authenticator() {


                protected PasswordAuthentication getPasswordAuthentication() {
                    return new PasswordAuthentication("user", "password"
                            .toCharArray());
                }

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     */
    public static void install() {
        // We will try to use the original authenticator as backup authenticator. 
        // Since there is no getter available, so try to use some reflection to 
        // obtain it. If that doesn't work, assume there is no original authenticator
        Authenticator original = null;
        
        try {
            Field f = Authenticator.class.getDeclaredField("theAuthenticator");
            f.setAccessible(true);
            original = (Authenticator) f.get(null);

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               .getPort());
         Proxy proxy = new Proxy(config.getType(), addr);


         final Optional<Credentials> creds = config.getCredentials();
         if (creds.isPresent()) {
            Authenticator authenticator = new Authenticator() {
               public PasswordAuthentication getPasswordAuthentication() {
                  return new PasswordAuthentication(creds.get().identity, creds.get().credential.toCharArray());
               }
            };
            Authenticator.setDefault(authenticator);

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            // create the HostnameVerifier to check that Hostname verification
            // is done
            TestHostnameVerifier hnv = new TestHostnameVerifier();
            HttpsURLConnection.setDefaultHostnameVerifier(hnv);


            Authenticator.setDefault(new Authenticator() {


                protected PasswordAuthentication getPasswordAuthentication() {
                    return new PasswordAuthentication("user", "password"
                            .toCharArray());
                }

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            // create the HostnameVerifier to check that Hostname verification
            // is done
            TestHostnameVerifier hnv = new TestHostnameVerifier();
            HttpsURLConnection.setDefaultHostnameVerifier(hnv);


            Authenticator.setDefault(new Authenticator() {


                protected PasswordAuthentication getPasswordAuthentication() {
                    return new PasswordAuthentication("user", "password"
                            .toCharArray());
                }

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