RPC client based on Apache Http

RpcClient.java

public String call(MultichainApiCommand requestBody) throws ClientProtocolException, IOException, AuthenticationException, URISyntaxException {
    /**
    	MultichainApiCommand requestBody --> 
    	is a class (MultichainApiCommand) with properties:
    	private String method;
	private Object[] params;
	private UUID id;
	private String chainName;
    **/
	
	
    // Initiate Closable HTTP client
    CloseableHttpClient client = HttpClients.createDefault();
		
    URI uri = new URIBuilder()
                .setScheme("http")
                .setHost("--> Host IP here <--")
                .setPort("--> Host PORT here <--")
                .build();
  
		// Prepare for POST at specified URI
    HttpPost httpPost = new HttpPost(uri);

    // Set Basic Authorization for POST Request 
    UsernamePasswordCredentials creds = new UsernamePasswordCredentials("--> Username <--", "--> Password <--");
    httpPost.addHeader(new BasicScheme().authenticate(creds, httpPost, null));
    httpPost.setHeader(HttpHeaders.CONTENT_TYPE, "text/plain");
	    
	    
    byte[] encodedAuth = Base64.getEncoder().encode(creds.getPassword().getBytes());
    String authHeader = "Basic " + new String(encodedAuth);
    HttpUriRequest request = RequestBuilder.post()
          .setUri(MultichainConfig.uri())
          .setHeader(HttpHeaders.AUTHORIZATION, authHeader)
          .setHeader(HttpHeaders.CONTENT_TYPE, "text/plain")
          .setEntity(new StringEntity(requestBody.toString()))
          .build();
	 
    // Set POST Body as String
    httpPost.setEntity(new StringEntity(requestBody.toString()));

    // Execute Call
    CloseableHttpResponse response = client.execute(httpPost);

    // Get Response From MultiChain
    HttpEntity entity = response.getEntity();
    String jsonResponse = EntityUtils.toString(entity, StandardCharsets.UTF_8);
	    
    return jsonResponse;
	}