execute update return 1 but does not update

I am trying to update my local sqlite table. My executeUpdate() returns 1 but does not update. I couldnt add full runnable code because it needs to work with local database.

This is codeblock where I update table.

 protected int notGuncelle(int gelenId, String yeniNot) {
    int update = -1;

    try {
        update = st.executeUpdate("UPDATE notlar SET 'not' = " + "'yeniNot'"  + " WHERE id = " + gelenId);

        System.out.println(update);
    } catch (SQLException ex) {
        //Logger.getLogger(SQLiteFunctions.class.getName()).log(Level.SEVERE, null, ex);
        System.out.println("Not güncelleme hatası: " + ex.getLocalizedMessage());
    }

    return update;

}