public void execute()

in src/main/org/apache/tools/ant/taskdefs/optional/splash/SplashTask.java [161:279]
96 lines of code
21 McCabe index (conditional complexity)

    public void execute() throws BuildException {
        if (splash != null) {
            splash.setVisible(false);
            getProject().removeBuildListener(splash);
            splash.dispose();
            splash = null; //NOSONAR
        }

        log("Creating new SplashScreen", Project.MSG_VERBOSE);
        InputStream in = null;

        if (imgurl != null) {
            try {
                URLConnection conn = null;

                SetProxy sp = new SetProxy();
                sp.setProxyHost(proxy);
                if (port != null) {
                    sp.setProxyPort(Integer.parseInt(port));
                }
                sp.setProxyUser(user);
                sp.setProxyPassword(password);
                sp.applyWebProxySettings();

                if (useProxy && (proxy != null && !proxy.isEmpty())
                    && (port != null && !port.isEmpty())) {

                    log("Using proxied Connection",  Project.MSG_DEBUG);
                    System.getProperties().put("http.proxySet", "true");

                    URL url = new URL(imgurl);

                    conn = url.openConnection();
                    if (user != null && !user.isEmpty()) {
                        // converted from sun internal classes to
                        // new Base64Converter
                        // utility class extracted from Get task
                        String encodedcreds =
                            new Base64Converter().encode(user + ":" + password);
                        conn.setRequestProperty("Proxy-Authorization",
                                                encodedcreds);
                    }

                } else {
                    System.getProperties().put("http.proxySet", "false");
                    log("Using Direction HTTP Connection", Project.MSG_DEBUG);
                    URL url = new URL(imgurl);
                    conn = url.openConnection();
                }
                conn.setDoInput(true);
                conn.setDoOutput(false);

                in = conn.getInputStream();

                // Catch everything - some of the above return nulls,
                // throw exceptions or generally misbehave
                // in the event of a problem etc

            } catch (Throwable ioe) {
                log("Unable to download image, trying default Ant Logo",
                    Project.MSG_DEBUG);
                log("(Exception was \"" + ioe.getMessage() + "\"",
                    Project.MSG_DEBUG);
            }
        }

        if (in == null) {
            ClassLoader cl = SplashTask.class.getClassLoader();
            if (cl != null) {
                in = cl.getResourceAsStream("images/ant_logo_large.gif");
            } else {
                in = ClassLoader
                    .getSystemResourceAsStream("images/ant_logo_large.gif");
            }
        }

        boolean success = false;
        if (in != null) {
            try (DataInputStream din = new DataInputStream(in);
                 ByteArrayOutputStream bout = new ByteArrayOutputStream()) {
                int data;
                while ((data = din.read()) != -1) {
                    bout.write((byte) data);
                }

                log("Got ByteArray, creating splash",  Project.MSG_DEBUG);

                try {
                    ImageIcon img = new ImageIcon(bout.toByteArray());
                    splash = new SplashScreen(img, progressRegExp, displayText); //NOSONAR
                    success = true;
                } catch (Throwable e) {
                    logHeadless(e);
                }
            } catch (Exception e) {
                throw new BuildException(e);
            } finally {
            }
        } else {
            try {
                splash = new SplashScreen("Image Unavailable.", progressRegExp, //NOSONAR
                                          displayText);
                success = true;
            } catch (Throwable e) {
                logHeadless(e);
            }
        }

        if (success) {
            splash.setVisible(true);
            splash.toFront();
            getProject().addBuildListener(splash);
            try {
                Thread.sleep(showDuration);
            } catch (InterruptedException e) {
                // Ignore Exception
            }
        }
    }