How to make ListView to show only the 6 last items?

I have Activity that shows only listview (He pulls the data from SQLite database), There is no limit for the data he can shows, and it work out well.

Now, I want to add a new little listview to the MainActivity which will show only the last five of the data.

I could not find anywhere on the network how to do it..

DataListActivity.java

   package com.example.ido.grades;
    import android.content.Intent;
    import android.database.Cursor;
    import android.database.sqlite.SQLiteDatabase;
    import android.support.v7.app.ActionBarActivity;
    import android.os.Bundle;
    import android.view.ContextMenu;
    import android.view.MenuInflater;
    import android.view.MenuItem;
    import android.view.View;
    import android.widget.AdapterView;
    import android.widget.ListView;
    import android.widget.Toast;
    public class DataListActivity extends ActionBarActivity {
        ListView listView;
        SQLiteDatabase sqLiteDatabase;
        CourseDbHelper courseDbHelper;
        Cursor cursor;
        ListDataAdaptar listDataAdaptar;
        @Override
        protected void onCreate(Bundle savedInstanceState) {

            super.onCreate(savedInstanceState);
            setContentView(R.layout.update_course);
            hideActionBar();
            listView = (ListView) findViewById(R.id.list_view);
            listDataAdaptar = new ListDataAdaptar(getApplicationContext(),R.layout.row_layout);
            listView.setAdapter(listDataAdaptar);
            registerForContextMenu(listView);
            courseDbHelper = new CourseDbHelper(getApplicationContext());
            sqLiteDatabase = courseDbHelper.getReadableDatabase();
            cursor = courseDbHelper.getInformation(sqLiteDatabase);
            registerForContextMenu(listView);
            if (!cursor.moveToFirst()){
            }
            else {
                do {
                    String year,semester,course,points,grade;
                    year = cursor.getString(0);
                    semester = cursor.getString(1);
                    course = cursor.getString(2);
                    points = cursor.getString(3);
                    grade = cursor.getString(4);
                    DataProvider dataProvider  = new DataProvider(year,semester,course,points,grade);
                    listDataAdaptar.add(dataProvider);
                }
                while (cursor.moveToNext());
            }
        }
        public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
            MenuInflater inflater = getMenuInflater();
            inflater.inflate(R.menu.menu_data_list, menu);

        }
        public boolean onContextItemSelected(MenuItem item) {
            AdapterView.AdapterContextMenuInfo info =
                    (AdapterView.AdapterContextMenuInfo) item.getMenuInfo();
            int mySelectedRowIndex = info.position;
            switch (item.getItemId()) {
                case R.id.update_item:
                    courseDbHelper = new CourseDbHelper(getApplicationContext());
                    sqLiteDatabase = courseDbHelper.getReadableDatabase();
                    DataProvider raw2 = (DataProvider)listDataAdaptar.getItem(mySelectedRowIndex);

                    Intent i = new Intent(DataListActivity.this, UpdateCourseActivity.class);
                    String year = raw2.getYear();
                    String semester = raw2.getSemester();
                    String course =  raw2.getCourse();
                    String points =  raw2.getPoints();
                    String grade =  raw2.getGrade();
                    int semIndex;
                    if (semester.equals("A'")){
                        semIndex =1;
                    }
                    else if (semester.equals("B'")){
                        semIndex =2;
                    }
                    else{
                        semIndex=3;
                    }
                    i.putExtra("YEAR", year);
                    i.putExtra("SEMESTER", Integer.toString(semIndex));
                    i.putExtra("COURSE", course);
                    i.putExtra("POINTS", points);
                    i.putExtra("GRADE", grade);
                    i.putExtra("POS", Integer.toString(mySelectedRowIndex));

                    startActivity(i);


                    return true;
                case R.id.delete_item:
                    courseDbHelper = new CourseDbHelper(getApplicationContext());
                    sqLiteDatabase = courseDbHelper.getReadableDatabase();
                    DataProvider raw = (DataProvider)listDataAdaptar.getItem(mySelectedRowIndex);
                    courseDbHelper.deleteInformation(raw.getYear(), raw.getSemester(), raw.getCourse(), raw.getPoints(), raw.getGrade());
                    Toast.makeText(this,"delete, pos["+mySelectedRowIndex+"]",Toast.LENGTH_LONG).show();
                    finish();
                    startActivity(getIntent());
                    return true;
                default:
                    return super.onOptionsItemSelected(item);
            }
        }
        public void onBackPressed() {
            startActivity(new Intent(this, MainActivity.class));
        }


        private void hideActionBar() {
            //Hide the action bar only if it exists
            if (getSupportActionBar() != null) {
                getSupportActionBar().hide();
            }
        }
        }

ListDataAdapter.java

package com.example.ido.grades;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.TextView;

import java.util.ArrayList;
import java.util.List;

/**
 * Created by Ido on 08/08/2015.
 */
public class ListDataAdaptar extends ArrayAdapter{
        List list = new ArrayList();
    public ListDataAdaptar(Context context, int resource) {
        super(context, resource);
    }

    static class LayoutHandler{
        TextView YEAR,SEMESTER,COURSE,POINTS,GRADE;
    }
    @Override
    public void add(Object object) {
        super.add(object);
        list.add(object);
    }


    @Override
    public int getCount() {
        return list.size();
    }

    @Override
    public Object getItem(int position) {
        return list.get(position);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View row = convertView;
        LayoutHandler layoutHandler;
        if (row == null){
            LayoutInflater layoutInflater = (LayoutInflater) this.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            row  = layoutInflater.inflate(R.layout.row_layout,parent,false);
            layoutHandler = new LayoutHandler();
            layoutHandler.YEAR = (TextView)row.findViewById(R.id.textYear);
            layoutHandler.SEMESTER = (TextView)row.findViewById(R.id.textSemester);
            layoutHandler.COURSE = (TextView)row.findViewById(R.id.textCourse);
            layoutHandler.POINTS = (TextView)row.findViewById(R.id.textPoints);
            layoutHandler.GRADE = (TextView)row.findViewById(R.id.textGrade);
            row.setTag(layoutHandler);
        }
        else{
            layoutHandler = (LayoutHandler) row.getTag();

        }
        DataProvider dataProvider = (DataProvider) this.getItem(position);
        layoutHandler.YEAR.setText(dataProvider.getYear());
        layoutHandler.SEMESTER.setText(dataProvider.getSemester());
        layoutHandler.COURSE.setText(dataProvider.getCourse());
        layoutHandler.POINTS.setText(dataProvider.getPoints());
        layoutHandler.GRADE.setText(dataProvider.getGrade());
        return row;
    }
}