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public class CustomInfoWindowAdapter implements GoogleMap.InfoWindowAdapter {

    private Activity context;

    public CustomInfoWindowAdapter(Activity context){
        this.context = context;
    }

    @Override

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public class TheBackupAgent extends BackupAgentHelper {

    private static final String DB_NAME = "test.db"; // db name

    @Override
    public void onCreate() {
        FileBackupHelper dbs = new FileBackupHelper(this, DB_NAME);
        addHelper("dbs", dbs);
    }

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public class RealmMigration  {

    private final static String TAG = RealmMigration.class.getName();

    private Context context;
    private Realm realm;

    public RealmMigration(Context context) {
        this.realm = Realm.getInstance(BaseApplication.realmConfiguration);
        this.context = context;

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public class TabFragment extends Fragment {

    private static final String ARG_POSITION = "position";

    private int position;

    public static TabFragment newInstance(int position) {
        TabFragment f = new TabFragment();
        Bundle b = new Bundle();
        b.putInt(ARG_POSITION, position);

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public class ViewPagerAdapter extends FragmentPagerAdapter {

        private final String[] tabTitles = { "Tab1", "Tab2", "Tab3" };

        public ViewPagerAdapter(FragmentManager fm) {
            super(fm);
        }

        @Override
        public CharSequence getPageTitle(int position) {

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

   toolbar = (Toolbar) findViewById(R.id.tool_bar);
   setSupportActionBar(toolbar);

   pager = (ViewPager) findViewById(R.id.pager);
   pager.setAdapter(new ViewPagerAdapter(getSupportFragmentManager()));

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<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <android.support.design.widget.TabLayout
        android:id="@+id/tabs"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"

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OkHttpClient client = new OkHttpClient();
String url = "http://www.google.com";
Request request = new Request.Builder()
    .url(url)
    .build();

Call call = client.newCall(request);

call.enqueue(new Callback() {
 @Override

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OkHttpClient client = new OkHttpClient();

String url = "http://www.google.com";
Request request = new Request.Builder()
      .url(url)
      .build();

Response response = client.newCall(request).execute();

//Response

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String html = "<div>
An <a href='http://example.com/'><b>example</b></a> link.</div>
";
Document doc = Jsoup.parse(html);
Element link = doc.select("div > a").text(); //example
Element link = doc.select("div > a").html(); //<b>example</b>
Element link = doc.select("div > a").get(0).text(); //get first link
Element link = doc.select("div").text(); //example link.