Reading and sending, how to do it establish an https connection?

Question

Java

Good day,
help me deal with androids, I'm just starting to make friends
, the basis is taken from the Internet
, I need to establish a connection, read and send data.
The server works on https; the client has a certificate; it includes

package com.devcolibri.parser;
 
import android.content.res.Resources;
import android.util.Log;
import com.devcolibri.androidandmysql.AdditionalKeyStoresSSLSocketFactory;
import com.devcolibri.androidandmysql.R;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpVersion;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URLEncodedUtils;
import org.apache.http.conn.scheme.PlainSocketFactory;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.scheme.SchemeRegistry;
import org.apache.http.conn.ssl.SSLSocketFactory;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpParams;
import org.apache.http.params.HttpProtocolParams;
import org.apache.http.protocol.HTTP;
import org.json.JSONException;
import org.json.JSONObject;
 
import java.io.*;
import java.security.KeyStore;
import java.util.List;
import java.io.IOException;
public class JSONParser {
 
    static InputStream is = null;
    static JSONObject jObj = null;
    static String json = "";
 
    // constructor
    public JSONParser() {
 
    }
 
    // метод получение json объекта по url
    // используя HTTP запрос и методы POST или GET
    public JSONObject makeHttpRequest(String url, String method, List<NameValuePair> params) {
 
        KeyStore keystore = KeyStore.getInstance("PKCS12");
 
        keystore.load(getResources().openRawResource(R.raw.keystore), "".toCharArray());
 
        SSLSocketFactory sslSocketFactory = new AdditionalKeyStoresSSLSocketFactory(keystore);
 
        HttpParams params1 = new BasicHttpParams();
        HttpProtocolParams.setVersion(params1, HttpVersion.HTTP_1_1);
        HttpProtocolParams.setContentCharset(params1, HTTP.UTF_8);
        HttpProtocolParams.setUseExpectContinue(params1, true);
 
        final SchemeRegistry registry = new SchemeRegistry();
        registry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));
        registry.register(new Scheme("https", sslSocketFactory, 3123));
 
        ThreadSafeClientConnManager manager = new ThreadSafeClientConnManager(params1, registry);
        DefaultHttpClient httpclient = new DefaultHttpClient(manager, params1);
 
        HttpPost httpPostRequest = new HttpPost("https://your_service");
 
// datas - array which contains data to send to server
        StringEntity se = new StringEntity(datas[0].toString(), HTTP.UTF_8);
 
// Set HTTP parameters
        httpPostRequest.setEntity(se);
        httpPostRequest.setHeader("Accept", "application/json");
        httpPostRequest.setHeader("Content-Type", "application/json");
 
        HttpResponse response = httpclient.execute(httpPostRequest);        // Создаем HTTP запрос
        try {
 
            // проверяем метод HTTP запроса
            if(method == "POST"){
                DefaultHttpClient httpClient = new DefaultHttpClient();
                HttpPost httpPost = new HttpPost(url);
                httpPost.setEntity(new UrlEncodedFormEntity(params));
 
                HttpResponse httpResponse = httpClient.execute(httpPost);
                HttpEntity httpEntity = httpResponse.getEntity();
                is = httpEntity.getContent();
 
            }else if(method == "GET"){
                DefaultHttpClient httpClient = new DefaultHttpClient();
                String paramString = URLEncodedUtils.format(params, "utf-8");
                url += "?" + paramString;
                HttpGet httpGet = new HttpGet(url);
 
                HttpResponse httpResponse = httpClient.execute(httpGet);
                HttpEntity httpEntity = httpResponse.getEntity();
                is = httpEntity.getContent();
            }
 
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
 
        try {
            BufferedReader reader = new BufferedReader(new InputStreamReader(is, "iso-8859-1"), 8);
            StringBuilder sb = new StringBuilder();
            String line = null;
            while ((line = reader.readLine()) != null) {
                sb.append(line + "\n");
            }
            is.close();
            json = sb.toString();
        } catch (Exception e) {
            Log.e("Buffer Error", "Error converting result " + e.toString());
        }
 
        // пытаемся распарсить строку в JSON объект
        try {
            jObj = new JSONObject(json);
        } catch (JSONException e) {
            Log.e("JSON Parser", "Error parsing data " + e.toString());
        }
 
        // возвращаем JSON строку
        return jObj;
 
    }
 
}

swears
Error51, 55) java: cannot find symbol
symbol: variable raw
location: class com.devcolibri.androidandmysql.R
Error51, 23) java: cannot find symbol
symbol: method getResources()
location: class com.devcolibri.parser.JSONParser
Error70 , 44) java: cannot find symbol
symbol: variable datas
location: class com.devcolibri.parser.JSONParser

and underline the line KeyStore.getInstance("PKCS12");