java.lang.RuntimeException: Failed : HTTP error code : 404 - docusignapi

Question

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.net.InetSocketAddress;
import java.net.MalformedURLException;
import java.net.Proxy;
import java.net.URL;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.List;
import javax.net.ssl.HttpsURLConnection;
import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
public class NetClientGet {
public static void main(String[] args) {
try {
URL url = new URL("https://demo.docusign.net/restapi/v2/login_information");
Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress("proxy.ops.tiaa-cref.org", 8080));
HttpsURLConnection conn = (HttpsURLConnection) url.openConnection(proxy);
conn.setRequestMethod("GET");
conn.setRequestProperty("content-type", "application/json");
conn.setRequestProperty("Username", "puviars#gmail.com");
conn.setRequestProperty("Password", "*******");
conn.setRequestProperty("IntegratorKey", "TIAC-e30cd896-cd8b-4cca-8551-86b8c51ea85a");
//conn.setRequestProperty("X-DocuSign-Authentication","{\"Username\":\"puviars#gmail.com\",\"Password\":\"********\",\"IntegratorKey\":\"TIAC-e30cd896-cd8b-4cca-8551-86b8c51ea85a\"}");
//String input = "{\"api_password\":\"false\",\"include_account_id_guid\":\"false\",\"login_settings\":\"none\"}";
conn.setUseCaches(false);
conn.setDoInput(true);
conn.setDoOutput(true);
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("api_password", "true"));
params.add(new BasicNameValuePair("include_account_id_guid", "false"));
params.add(new BasicNameValuePair("login_settings", "all"));
OutputStream os = conn.getOutputStream();
BufferedWriter writer = new BufferedWriter(
new OutputStreamWriter(os, "UTF-8"));
writer.write(getQuery(params));
writer.flush();
writer.close();
os.close();
//conn.setDoOutput(true);
//OutputStream os = conn.getOutputStream();
//os.write(input.getBytes());
//os.flush();
//conn.setRequestProperty("api_password","false");
//conn.setRequestProperty("include_account_id_guid","false");
//conn.setRequestProperty("login_settings","none");
if (conn.getResponseCode() != 200) {
throw new RuntimeException("Failed : HTTP error code : "
+ conn.getResponseCode());
}
BufferedReader br = new BufferedReader(new InputStreamReader(
(conn.getInputStream())));
String output;
System.out.println("Output from Server .... \n");
while ((output = br.readLine()) != null) {
System.out.println(output);
}
conn.disconnect();
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
private static String getQuery(List<NameValuePair> params) throws UnsupportedEncodingException
{
StringBuilder result = new StringBuilder();
boolean first = true;
for (NameValuePair pair : params)
{
if (first)
first = false;
else
result.append("&");
result.append(URLEncoder.encode(pair.getName(), "UTF-8"));
result.append("=");
result.append(URLEncoder.encode(pair.getValue(), "UTF-8"));
}
return result.toString();
}
}
//
while invoking rest url via httpsurlconnection, the below code in eclispe IDE using run as java program.i am getting the below error:
Exception in thread "main" java.lang.RuntimeException: Failed : HTTP error code : 404
at NetClientGet.main(NetClientGet.java:71)
Please help me to resolve it. This code is just to hit demo url to login & fetch the details & then i will proceed to send the pdf documents to esign it.But if am using their interactive website i could get the response in JSON.
//