Table2

package Stock;

public class Add extends javax.swing.JFrame {

    /**
     * Creates new form Add
     */
    public Add() {
        initComponents();
        this.setLocationRelativeTo(null);
    }

    private void jButton1MouseClicked(java.awt.event.MouseEvent evt) {
      String id = jTextField1.getText();
      String p = jTextField2.getText();
      String kp = jTextField3.getText();
      String kc = jTextField4.getText();
      String ka = jTextField5.getText();

      if (id.equals("") || p.equals("") || kp.equals("") || kc.equals("") || ka.equals(""))
      {
       JOptionPane.showConfirmDialog(null,"Plese fill all informations", "Fail", JOptionPane.DEFAULT_OPTION);
      }
      else if (findProduct(id, true))
      {
       JOptionPane.showConfirmDialog(null,"Sorry, product is already in stock", "Fail", JOptionPane.DEFAULT_OPTION);
      } else {
       int price = Integer.parseInt(kp);
       int cost = Integer.parseInt(kc);
       int re = price - cost;
       int amount = Integer.parseInt(ka);
       addProduct(id, p, price, cost,re , amount);
       JOptionPane.showConfirmDialog(null,"Add complete", "Successful", JOptionPane.DEFAULT_OPTION);
       // updateTable(true) <-- Not Found
       this.setVisible(false);
      }
    }
}