Error even though i am following along

package com.teamrandom.stormy;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;

import java.io.IOException;

import okhttp3.Call;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

public class MainActivity extends AppCompatActivity {

    public static final String TAG = MainActivity.class.getSimpleName();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        String apiKey = "9e64526f3fcfdfc5b4461b124ab998ea";
        double latitude = 37.8267 ;
        double longitude = 122.4233 ;
        String forecastUrl = "https://api.darksky.net/forecast/" + apiKey + "/" + latitude + "," + longitude;

        OkHttpClient client = new OkHttpClient();
        Request request = new request.Builder().url(forecastUrl).build();

        Call call = client.newCall(request);
        try {
            Response response = call.execute();
            if (response.isSuccessful()) {
                Log.v(TAG, response.body().string());
            }
        } catch (IOException e) {
            Log.e(TAG, "Exception caught : ", e);
        }
    }
}

OkHttpClient client = new OkHttpClient();
        Request request = new request.Builder().url(forecastUrl).build();