WebClient webClient = new WebClient(BrowserVersion.CHROME);

    webClient.getOptions().setJavaScriptEnabled(true);
    webClient.getOptions().setRedirectEnabled(true);
    webClient.getOptions().setThrowExceptionOnScriptError(false);
    webClient.getOptions().setCssEnabled(false);
    webClient.setAjaxController(new NicelyResynchronizingAjaxController());


    try{


        HtmlPage page1 = null;
        HtmlPage page2 = null;
        HtmlPage page3 = null;
         HtmlPage page = webClient.getPage("https://online.firstdata.de/esp/concardis");




        List<FrameWindow> frames = page.getFrames();
        for (FrameWindow frame : frames) {
            if (frame.getFrameElement().getNameAttribute().equals("application")) {
                page1 = webClient.getPage(frame.getEnclosedPage().getUrl());
            }
        }

        List<FrameWindow> frames1 = page1.getFrames();
        for (FrameWindow frame : frames1) {
            if (frame.getFrameElement().getNameAttribute().equals("content")) {
                page2 = webClient.getPage(frame.getEnclosedPage().getUrl());
            }
        }

        List<FrameWindow> frames2 = page2.getFrames();
        for (FrameWindow frame : frames2) {
            if (frame.getFrameElement().getId().equals("loginFrame")) {
                page3 = webClient.getPage(frame.getFrameElement().getSrcAttribute());
            }
        }


        HtmlForm form = page3.getFormByName("loginForm");
        HtmlTextInput userName = form.getInputByName("j_username");
        HtmlPasswordInput password = form.getInputByName("j_password");

        userName.setValueAttribute("username");
        password.setValueAttribute("password");

        HtmlSubmitInput submit = form.getInputByName("Submit");

        submit.click();

HtmlPage page = webClient.getPage("https://online.firstdata.de/esp/concardis");

    HtmlPage page1 = null;
    List<FrameWindow> frames = page.getFrames();
    for (FrameWindow frame : frames) {
        if (frame.getFrameElement().getNameAttribute().equals("application")) {
            page1 = (HtmlPage) frame.getEnclosedPage();
            break;
        }
    }

    HtmlPage page2 = null;
    List<FrameWindow> frames1 = page1.getFrames();
    for (FrameWindow frame : frames1) {
        if (frame.getFrameElement().getNameAttribute().equals("content")) {
            page2 = (HtmlPage) frame.getEnclosedPage();
            break;
        }
    }

    HtmlPage page3 = null;
    List<FrameWindow> frames2 = page2.getFrames();
    for (FrameWindow frame : frames2) {
        if (frame.getFrameElement().getId().equals("loginFrame")) {
            page3 = (HtmlPage) frame.getEnclosedPage();
            break;
        }
    }

    HtmlForm form = page3.getFormByName("loginForm");
    HtmlTextInput userName = form.getInputByName("j_username");
    HtmlPasswordInput password = form.getInputByName("j_password");

    userName.type("username");
    password.type("password");

    HtmlSubmitInput submit = form.getInputByName("Submit");

    submit.click();