INSERT new row into database java?
try {
    Main.db.getCon().createStatement().executeUpdate("INSERT INTO qos_qoe (channel_id) VALUES ('vtv1') ");
    Main.db.getCon().createStatement().executeUpdate("UPDATE qos_qoe SET channel_id = 'vtv1' WHERE id = 3 ");

} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

String statement = "UPDATE iptv_media_source SET rated = ?, vote_count = ? WHERE channel_id= ? ";
PreparedStatement st = Main.db.getCon().prepareStatement(statement);
st.setString(1, rated);
st.setString(2, vote_count);
st.setString(3, channelId);
st.executeUpdate();