title: How to solve java.lang.IllegalStateException?
body: <p>I am making an app in which the data is retrieved from the database.But I am getting an error which says  </p>
  
  <blockquote>
    <p>java.lang.IllegalStateException: Couldn't read row 6, col 6 from
    CursorWindow.  Make sure the Cursor is initialized correctly before
    accessing data from it.</p>
  </blockquote>
  
  <p>Kindly help me in finding out the solution as I am not able to get it. Also I am attaching the Java file.</p>
  
  <pre><code>public class QuizActivity extends AppCompatActivity {
  TextView tv, tv1;
  RadioGroup rg;
  Button btn;
  SQLiteDatabase sqldb;
  Cursor c;
  int score, nscore,question;
  String n;
  int array[]=new int[11];
  private static final String x="SELECT * FROM questions";
  
  @Override
  protected void onCreate(@Nullable Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.quiz_activity);
      tv = (TextView) findViewById(R.id.textView4);
      tv1 = (TextView) findViewById(R.id.textView9);
      rg = (RadioGroup) findViewById(R.id.rg);
      btn = (Button) findViewById(R.id.button2);
      Bundle data = getIntent().getExtras();
      if (data!=null){
          n = data.getString("Name:");
      }
      openDatabase();
      c = sqldb.rawQuery(x,null);
      c.moveToFirst();
      getQuestion();
      tv1.setText("Score:0");
      btn.setOnClickListener(new View.OnClickListener() {
          @Override
          public void onClick(View v) {
              int res = rg.getCheckedRadioButtonId();
              switch (res) {
                  case 0:
                  case 1:
                  case 2:
                  case 3:
                      break;
                  default:
                      Toast.makeText(getApplicationContext(), "Select atleast 
        anyone option!", Toast.LENGTH_LONG).show();
                      return;
              }
              if (res == Integer.parseInt(c.getString(6))) {
                  Toast.makeText(getApplicationContext(), "Correct answer!", Toast.LENGTH_LONG).show();
                  score += nscore;
                  tv1.setText("Score:" + nscore);
              } else {
                  Toast.makeText(getApplicationContext(), "Incorrect answer!", Toast.LENGTH_LONG).show();
              }
              Toast.makeText(getApplicationContext(), "You have completed your quiz!", Toast.LENGTH_LONG).show();
              Intent i = new Intent(getApplicationContext(), FinialActivity.class);
              i.putExtra("Name:", n);
              i.putExtra("Score:", score);
              startActivity(i);
          }
      });
  }
  
  
  protected void openDatabase() {
      sqldb = openOrCreateDatabase("Qwerty", Context.MODE_PRIVATE, null);
  }
  protected ArrayList&lt;String&gt;getQuestion() {
      final String Table_name="questions";
      String SelectQuery="SELECT  * FROM "+Table_name;
      MyHelper help = new MyHelper(getApplicationContext());
      sqldb=help.getReadableDatabase();
      sqldb=help.getWritableDatabase();
      c=sqldb.rawQuery(SelectQuery,null);
      ArrayList&lt;String&gt; data= new ArrayList&lt;&gt;();
      if (c !=null){
          if (c.moveToFirst()){
              for (int i=0;i&lt;c.getCount();i++){
                  data.add(c.getString(i));
                  c.moveToNext();
              }
          }
          c.close();
      }
      return data;
  }}
  </code></pre>