import java.net.URL;
import java.net.URLConnection;
import java.net.HttpURLConnection;
import java.io.*;

public class AnveoAPI {
    private static final String ANVEO_API_URL = "https://www.anveo.com/api/v2.asp";
    private static final String XML = "<?xml version=\"1.0\"?>" +
                               "<REQUEST>" +
                                    "<USERTOKEN>" +
                                        "<USERKEY>ssssdf141891e2e883904b0b294dc5bq79c1c1c13f6d</USERKEY>" +
                                    "</USERTOKEN>" +
                                    "<ACTION NAME=\"DIAL.CONNECT\">" +
                                        "<PARAMETER NAME=\"TEST\">TRUE</PARAMETER>" +
                                        "<PARAMETER NAME=\"PHONENUMBER\">1215215215</PARAMETER>" +
                                        "<PARAMETER NAME=\"DESTPHONENUMBER\">1212121212</PARAMETER>" +
                                        "<PARAMETER NAME=\"CALLERID\">12157010680</PARAMETER>" +
                                        "<PARAMETER NAME=\"DELAY\">1440</PARAMETER>" +
                                        "<PARAMETER NAME=\"MEMO\">DIAL.CONNECT API Action example to connect 1215215215 with 1212121212 delayed by 24 hours</PARAMETER>" +
                                    "</ACTION>" +
                               "</REQUEST>";

    public static void main(String[] args) {
        String xml = doApiCall();

        // xml holds API result XML text
        System.out.println(xml);
        // parse XML Results with parser
        // ...
    }

    private static String doApiCall() {
        String result = null;
        try {
            URL url = new URL(ANVEO_API_URL);
            URLConnection uc = url.openConnection();
            HttpURLConnection connection = (HttpURLConnection) uc;
            connection.setDoOutput(true);
            connection.setDoInput(true);
            connection.setRequestMethod("POST");
            connection.addRequestProperty("Content-Type", "application/xml; charset=UTF-8");
            connection.addRequestProperty("Accept", "application/xml; charset=UTF-8");
            OutputStream out = connection.getOutputStream();
            Writer writer = new BufferedWriter(new OutputStreamWriter(out, "UTF-8"));
            writer.write(XML);
            writer.flush();
            writer.close();
            InputStream in = connection.getInputStream();
            BufferedReader reader = new BufferedReader(new InputStreamReader(in, "UTF-8"));
            StringBuffer sb = new StringBuffer();

            String line;
            while ((line = reader.readLine()) != null) sb.append(line);
            reader.close();
            connection.disconnect();
            result = sb.toString();
        } catch (IOException e) {
            e.printStackTrace();  // ERROR loading XML
        }
        return result;
    }
}