Erro em INSERT INTO com PreparedStatement

import java.sql.*;

public class ProductControle {
	private ProductVisao visao;
	private Connection connection;

	public ProductControle(Connection c) {
		this.visao = new ProductVisao();
		connection = c;
	}

	public void adicionarProduto() {

		try {

			PreparedStatement pstmt;

			//String select = "SELECT description, amount, price FROM ProductsShop";

			//pstmt = connection.prepareStatement(select);
			//ResultSet resultSet = pstmt.executeQuery();

			String insert = "INSERT INTO ProductsShop(description) VALUES('?')";

			pstmt = connection.prepareStatement(insert);
			
			pstmt.setString(1, visao.getJDescricao());
			//pstmt.setInt(2, visao.getJQuantidade());
			//pstmt.setDouble(3, visao.getJPreco());

			pstmt.execute();
			
			connection.close();
		} catch (SQLException sqlex) {
			sqlex.printStackTrace();
			System.err.println(sqlex.toString());
		}
		/*catch(NullPointerException npex){
			System.err.println("que erro eh esse?");
			npex.printStackTrace();
		}*/

	}
}

import java.awt.*;
import java.awt.event.ActionListener;

import javax.swing.*;

public class ProductVisao extends JFrame{
	protected Container container;
	protected JTextField jCodigo = new JTextField(5);
	protected JTextField jDescricao = new JTextField(10);
	protected JTextField jQuantidade = new JTextField(5);
	protected JTextField jPreco = new JTextField(5);
	protected JButton jBotaoRegistrar = new JButton("Registrar");
	
	public ProductVisao(){
		super("MacShop");
		this.setBounds(100, 100, 700, 500);
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		container = this.getContentPane();
		container.setLayout(new FlowLayout());
		this.setTitle("Programa de Vendas");
		container.add(new JLabel("Código do Produto: "));
		container.add(jCodigo);
		container.add(new JLabel("Descrição: "));
		container.add(jDescricao);
		container.add(new JLabel("Quantidade: "));
		container.add(jQuantidade);
		container.add(new JLabel("Preço: "));
		container.add(jPreco);
		container.add(jBotaoRegistrar);
	}
	GridBagConstraints c = new GridBagConstraints();

	public String getJCodigo() {
		return jCodigo.getText();
	}

	public String getJDescricao() {
		return jDescricao.getText();
	}

	public int getJQuantidade() {
		
		return Integer.parseInt(jQuantidade.getText());
	}

	public double getJPreco() {
		return Double.parseDouble(jPreco.getText());
	}

	public void adicionarListenerRegistrar(ActionListener itemListener){
		this.jBotaoRegistrar.addActionListener(itemListener);
		
	}
}