import java.net.URLConnection;
import java.net.URLStreamHandler;

public class Handler extends URLStreamHandler {

    public static final String PROTOCOL_TYPE = "file";

    @Override
    protected URLConnection openConnection(URL u) throws IOException {
        return null;
    }

                setURL(u, "zip", null, 0, null, null, spec.substring(4), null, null);
            }

            @Override
            protected URLConnection openConnection(final URL u) throws IOException {
                return null;
            }
        });
        final String root = new File("/").getCanonicalPath();

import java.net.URLConnection;
import java.net.URLStreamHandler;

public class Handler extends URLStreamHandler {

    public static final String PROTOCOL_TYPE = "test";

    @Override
    protected URLConnection openConnection(URL u) throws IOException {
        return null;
    }

     *            URL。{@literal null}であってはいけません
     * @return URLへの{@link URLConnection}オブジェクト
     */
    public static URLConnection openConnection(final URL url) {
        assertArgumentNotNull("url", url);

        try {
            final URLConnection connection = url.openConnection();
            connection.setUseCaches(false);
            return connection;
        } catch (final IOException e) {

        return DEFAULT_HTTP_PORT;
    }


    @Override
    protected URLConnection openConnection ( URL url ) throws IOException {
        url = new URL(url, url.toExternalForm(), getDefaultStreamHandler(url.getProtocol()));
        return new NtlmHttpURLConnection((HttpURLConnection) url.openConnection(), this.transportContext);
    }

import java.net.URLConnection;
import java.net.URLStreamHandler;

public class Handler extends URLStreamHandler {

    public static final String PROTOCOL_TYPE = "web";

    @Override
    protected URLConnection openConnection(URL u) throws IOException {
        return null;
    }

    static final URLStreamHandler SMB_HANDLER = new Handler();

    protected int getDefaultPort() {
        return SmbConstants.DEFAULT_PORT;
    }
    public URLConnection openConnection( URL u ) throws IOException {
        return new SmbFile( u );
    }
    protected void parseURL( URL u, String spec, int start, int limit ) {
        String host = u.getHost();
        String path, ref;

            task.run();
        }
    }

    protected HttpURLConnection open(final URL u) throws IOException {
        final HttpURLConnection connection = (HttpURLConnection) (proxy != null ? u.openConnection(proxy) : u.openConnection());
        if (sslSocketFactory != null && connection instanceof HttpsURLConnection) {
            ((HttpsURLConnection) connection).setSSLSocketFactory(sslSocketFactory);
        }

        .setTrafficStatsTag(101)
        .build()

    req.start()
    return completableFuture
  }

  @Test
  fun urlConnection() {
    val conn = engine.openConnection(URL("https://google.com/robots.txt")) as HttpURLConnection

    val text =
      conn.inputStream.use {
        it.bufferedReader().readText()
      }

    assertEquals(200, conn.responseCode)

        this.transportContext = tc;
    }


    @Override
    protected int getDefaultPort () {
        return SmbConstants.DEFAULT_PORT;
    }


    @Override
    public URLConnection openConnection ( URL u ) throws IOException {
        if ( log.isDebugEnabled() ) {
            log.debug("Opening file " + u);
        }
        return new SmbFile(u, getTransportContext());
    }


    /**