Error: illegal start of type

Programação Java
,
#1

alguem pode me ajudar?
to começando com android e to meio perdido

Codigo

import android.annotation.SuppressLint;
import android.os.Bundle;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;

import com.google.android.gms.ads.AdRequest;
import com.google.android.gms.ads.AdView;
public class MainActivity extends AppCompatActivity {
    private WebView webView;
    private static final String TAG = "MainActivity";
    private AdView mAdView;
    @SuppressLint("SetJavaScriptEnabled")
    @Override
    public void onCreate(Bundle savedInstanceState){
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        webView = (WebView) findViewById(R.id.webview);
        webView.setWebViewClient(new WebViewClient());
        webView.loadUrl("https://novaflix.xyz");
        WebSettings webSettings = webView.getSettings();
        webSettings.setJavaScriptEnabled(true);
        mAdView = findViewById(R.id.adView);
        AdRequest adRequest = new AdRequest.Builder().build();
        mAdView.loadAd(adRequest);
    }
    ^

error: illegal start of type
^

#2

Tá faltando mais um } no final do código pra fechar o bloco da classe MainActivity