I have an Example of CheckBox And I'm in trouble about it .Please help me?

Checkbox will update value in column of database

if true : 1.false : 0 from database.I want if all checkbox isChecked() == true then success,else will faild

Here is my code !

public class MainActivity extends AppCompatActivity {
CheckJobDBHelper dbHelper;
SQLiteDatabase database;
List<CheckJob> listJob;
RecyclerView rv1;
Button btnDone;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    listJob = new ArrayList<>();
    setContentView(R.layout.activity_main);
    btnDone = (Button)findViewById(R.id.btnDone);
    rv1 = (RecyclerView)findViewById(R.id.rv1);
    rv1.setLayoutManager(new LinearLayoutManager(this));
    rv1.setItemAnimator(new DefaultItemAnimator());
    dbHelper = new CheckJobDBHelper(this);
    CheckJobAdapter checkJobAdapter = new CheckJobAdapter(this,listJob);
    rv1.setAdapter(checkJobAdapter);
    FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
    fab.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Intent intent = new Intent(MainActivity.this, AddJobActivity.class);
            startActivity(intent);
        }
    });
}




@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.menu_main, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();

    //noinspection SimplifiableIfStatement
    if (id == R.id.action_settings) {
        return true;
    }

    return super.onOptionsItemSelected(item);
}

@Override
protected void onResume() {
    super.onResume();
    displayData();
}

private void displayData() {
    listJob = new ArrayList<>();
    database = dbHelper.getWritableDatabase();
    Cursor mCursor = database.rawQuery("SELECT * FROM "
            + CheckJobDBHelper.TABLE_JOB, null);

    if (mCursor.moveToFirst()) {
        do {
            CheckJob c = new CheckJob();
            c.setId(mCursor.getInt(mCursor
                    .getColumnIndex(CheckJobDBHelper.KEY_ID)));
            c.setNamejob(mCursor.getString(mCursor
                    .getColumnIndex(CheckJobDBHelper.KEY_JOBNAME)));
            c.setStatus(mCursor.getInt(mCursor
                    .getColumnIndex(CheckJobDBHelper.KEY_STATUS)));
            listJob.add(c);

        } while (mCursor.moveToNext());
    }
    CheckJobAdapter disadpt = new CheckJobAdapter(MainActivity.this, listJob);
    rv1.setAdapter(disadpt);
    mCursor.close();
}

}

 @Override
public void onBindViewHolder(final JobVH jobVH, int i) {
    CheckJob checkJob = dataList.get(i);
    jobVH.chkJob.setText(checkJob.getNamejob());
    jobVH.chkJob.setChecked(checkJob.getStatus() == 1 ? true : false);
    jobVH.chkJob.setTag(checkJob);
    jobVH.chkJob.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            CheckBox cb = (CheckBox) v;
            CheckJob CheckJob = (CheckJob) cb.getTag();
            CheckJob.setStatus(cb.isChecked() == true ? 1 : 0);
            dbHelper.updateJob(CheckJob);
        }
    });
}

@Override
public int getItemCount() {
    return dataList == null ? 0 : dataList.size();
}

public class JobVH extends RecyclerView.ViewHolder {
    CheckBox chkJob;

    public JobVH(View itemView) {
        super(itemView);
        chkJob = (CheckBox) itemView.findViewById(R.id.chk_job);

    }
}

DATABASE : id title status 1 drink coffee 0 2