Need Java Code For World Check API

Dear Team,

I download the code from download tab from developer community. for use that java code able to retrieve the values for SEQ 1a and SEQ 2b. And not able to retrieve the remaining functions for ex: SEQ 1b,SEQ-1c,SEQ-4a,SEQ-5b,SEQ-5c. and also we getting "HTTP/1.1 401 Unauthorized" Error.

Please help us. and find my code below for reference.

Java Code:

String jsonBody1 = "{\"secondaryFields\":[],\"entityType\":\"INDIVIDUAL\",\"customFields\":[],\"groupId\":"+groupid+",\"providerTypes\":[\"WATCHLIST\"],\"name\":\"george w bush\"}";

// create a JSON object from the JSON

string
JSONObject jo = new JSONObject(jsonBody1);

//System.out.println(jo.toString());

String jlen = String.valueOf(jo.toString().length());

//SEQ-4a-postscreencase

String dataToSign = "(request-target): post " + gatewayurl + "cases/" + casesystemid + "/screeningRequest\n" +
"host: " + gatewayhost + "\n" +
"date: " + date + "\n" +
"content-type: " + "application/json" +"\n" +
"content-length: " + jlen + "\n" +
jo;

//SEQ-2b-postsavesimplecase

String hmac = generateAuthHeader(dataToSign, apisecret);

String authorisation = "Signature keyId=\"" + apikey + "\",algorithm=\"hmac-sha256\",headers=\"(request-target) host date content-type content-length\",signature=\"" + hmac + "\"";
System.out.println("jlen : "+jlen);

System.out.println("dataToSign : "+dataToSign);

System.out.println("hmac : "+hmac);

System.out.println("authorisation : "+authorisation);
String msg = jo.toString();

HttpPost httpPost = new HttpPost("https://rms-world-check-one-api-pilot.thomsonreuters.com/v1/cases");

HttpEntity entity = new StringEntity(msg);
httpPost.setEntity(entity);

httpPost.addHeader("Date", date);

httpPost.addHeader("Cache-Control", "no-cache");

httpPost.addHeader("Content-Type", "application/json" );

httpPost.addHeader("Authorization", authorisation);

// send the POST request
CloseableHttpResponse response1 = httpclient.execute(httpPost);

try {
HttpEntity entity1 = response1.getEntity();

System.out.println("response1.getStatusLine() : "+response1.getStatusLine());

String json = EntityUtils.toString(response1.getEntity());