Not Working PLEASE HELP!

[utsahk]

I am new to Android Coding, and I want to import this, but I do not understand how to do so. I am getting many errors and its not working, can someone give me a sample code of how to import or a video tutorial, as I followed all the steps and its not working. PLEASE Help!

Here is my main ERROR:

Here is my Code:

'import android.content.Intent;
import android.graphics.RectF;
import android.os.Bundle;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.util.TypedValue;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.PopupMenu;
import android.widget.Toast;

import com.github.tibolte.agendacalendarview.AgendaCalendarView;
import com.github.tibolte.agendacalendarview.CalendarPickerController;
import com.github.tibolte.agendacalendarview.models.CalendarEvent;
import com.github.tibolte.agendacalendarview.models.DayItem;

import com.alamkanak.weekview.DateTimeInterpreter;
import com.alamkanak.weekview.MonthLoader;
import com.alamkanak.weekview.WeekView;
import com.alamkanak.weekview.WeekViewEvent;

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Locale;
import java.util.ArrayList;

import java.util.List;

public abstract class MainActivity extends AppCompatActivity implements WeekView.EventClickListener, MonthLoader.MonthChangeListener, WeekView.EventLongPressListener, WeekView.EmptyViewLongPressListener, android.support.v7.widget.PopupMenu.OnMenuItemClickListener {

private static final int TYPE_DAY_VIEW = 1;
private static final int TYPE_THREE_DAY_VIEW = 2;
private static final int TYPE_WEEK_VIEW = 3;
private int mWeekViewType = TYPE_THREE_DAY_VIEW;
private WeekView mWeekView;
private ImageButton buttonActivity;
AgendaCalendarView mAgendaCalendarView;

private static String eventsName = "Study 2Maths";

public static String getEventsName() {
    return eventsName;
}

public static void setEventsName(String eventsName) {
    MainActivity.eventsName = eventsName;
}

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

    // minimum and maximum date of our calendar
    // 2 month behind, one year ahead, example: March 2015 <-> May 2015 <-> May 2016
    Calendar minDate = Calendar.getInstance();
    Calendar maxDate = Calendar.getInstance();

    minDate.add(Calendar.MONTH, -2);
    minDate.set(Calendar.DAY_OF_MONTH, 1);
    maxDate.add(Calendar.YEAR, 1);

    List<CalendarEvent> eventList = new ArrayList<>();
    mockList(eventList);

    mAgendaCalendarView.init(eventList, minDate, maxDate, Locale.getDefault(), this);
    mAgendaCalendarView.enableCalendarView(true);

}'