table Expenses has no column named category

Question

i'm trying to create a table in an SQLite Database in Android and for some reason it isn't working. My code seems fine, can someone help me see what i'm doing wrong?

TableData.java

public class TableData {

public TableData(){

}

public static abstract class TableInfo implements BaseColumns{

    public static final String EXPENSE_NAME = "name";
    public static final String EXPENSE_COST = "cost";
    public static final String EXPENSE_CATEGORY = "category";
    public static final String DATABASE_NAME = "AquariumApp";
    public static final String TABLE_NAME = "Expenses";

}
 }

DatabadeOperations.java

public class DatabaseOperations extends SQLiteOpenHelper {
public static final int database_version = 2;
public String CREATE_QUERY = "CREATE TABLE " + TableInfo.TABLE_NAME + "(" + TableInfo.EXPENSE_NAME + " TEXT," + TableInfo.EXPENSE_COST + " TEXT," + TableInfo.EXPENSE_CATEGORY + " TEXT );";

public DatabaseOperations (Context context){
    super(context, TableInfo.DATABASE_NAME, null, database_version);
    Log.d("Database operations", "Database successfully created");
}

@Override
public void onCreate(SQLiteDatabase sdb){
    sdb.execSQL(CREATE_QUERY);
    Log.d("Database operations", "Table created");
}
@Override
public void onUpgrade(SQLiteDatabase arg0, int arg1, int arg2){

}

public void putInformation(DatabaseOperations dop, String name, String cost, String category){
    SQLiteDatabase SQ = dop.getWritableDatabase();
    ContentValues cv = new ContentValues();
    cv.put(TableInfo.EXPENSE_NAME, name);
    cv.put(TableInfo.EXPENSE_COST, cost);
    cv.put(TableInfo.EXPENSE_CATEGORY, category);
    long k = SQ.insert(TableInfo.TABLE_NAME, null, cv);
    Log.d("Database operations", "One row inserted.");

}
 }

AddExpense.java

public class AddExpense extends AppCompatActivity {

//EditText NameExpense = (EditText) findViewById(R.id.editText);
//EditText CostExpense = (EditText) findViewById(R.id.editText3);
EditText expenseName, expenseCost;
RadioGroup expenseCategory;
RadioButton radioButton;
String expenseNameString, expenseCostString, radiobutt, expenseCategoryString;
Button REG;
Context ctx = this;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_add_expense);
    setTitle("Add Expense");

    expenseName = (EditText) findViewById(R.id.expenseName);

    expenseCost = (EditText) findViewById(R.id.expenseCost);

    expenseCategory = (RadioGroup) findViewById(R.id.RadioGroup);

    REG = (Button) findViewById(R.id.button);
    REG.setOnClickListener(new View.OnClickListener(){

        @Override
        public void onClick(View v){
            expenseNameString = expenseName.getText().toString();
            expenseCostString = expenseCost.getText().toString();

            // get selected radio button from radioGroup
            int selectedId = expenseCategory.getCheckedRadioButtonId();

            // find the radiobutton by returned id
            radioButton = (RadioButton) findViewById(selectedId);

            expenseCategoryString = radioButton.getText().toString();

            DatabaseOperations DB = new DatabaseOperations(ctx);
            DB.putInformation(DB, expenseNameString, expenseCostString, expenseCategoryString);
            Toast.makeText(getBaseContext(), "Expense Added!", Toast.LENGTH_LONG).show();
        }
    });


}

This is the error i'm getting.