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Thread: How to update quantity, +1 upon click on product23 photo, in jtable that is related to jtextfields: name23, price23, quantity23?

  1. #1
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    Default How to update quantity, +1 upon click on product23 photo, in jtable that is related to jtextfields: name23, price23, quantity23?

    I want to update the quantity (+1) in jtable cell upon each click on the product photo (product23 the variable)

    private void product23MouseClicked(java.awt.event.MouseEvent evt) {
    String pcode = product23.getText();
    try {
    Class.forName("com.mysql.jdbc.Driver");
    Connection con = DriverManager.getConnection("jdbc:mysql://localhost/salespos","root","");
    PreparedStatement pst = con.prepareStatement("select * from product where id = ?");

    pst.setString(1, pcode);
    ResultSet rs = pst.executeQuery();

    if(rs.next() == true)
    {
    String pname = rs.getString("name");
    String price = rs.getString("price");
    String quantity = rs.getString("quantity");
    name23.setText (pname.trim());
    price23.setText("$" +price.trim());
    quantity23.setText(quantity.trim());
    byte[] image = rs.getBytes("Image");
    ImageIcon format = new ImageIcon(image);
    product23.setIcon(format);
    }

    } catch (ClassNotFoundException | SQLException ex) {
    Logger.getLogger(pos.class.getName()).log(Level.SE VERE, null, ex);
    }
    DefaultTableModel model = new DefaultTableModel();
    try{
    model = (DefaultTableModel)jTable1.getModel();
    model.addRow(new Object[]
    {
    name23.getText(),
    price23.getText(),
    quantity23.getText(),
    });

    double sum = 0;
    for(int i = 0; i<jTable1.getRowCount(); i++)
    {
    double x ;
    if(jTable1.getValueAt(i, 1).toString().contains("$")){
    x = (double) Double.parseDouble(jTable1.getValueAt(i, 1).toString().substring(1));
    }
    else
    x = (double) (Double.parseDouble(jTable1.getValueAt(i, 1).toString()));

    sum = (double) (sum + x);
    sum = Math.round(sum*100.0)/100.0;
    }
    txtsub.setText("$"+Double.toString(sum));
    }catch(RuntimeException e)
    {
    }
    }

  2. #2
    Super Moderator Norm's Avatar
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    Default Re: How to update quantity, +1 upon click on product23 photo, in jtable that is related to jtextfields: name23, price23, quantity23?

    Are you asking how to add 1 to a numeric value in a cell in a JTable when a button(???) is pressed?

    What happens when you compile and execute the above code?
    Does it do what you want?
    If it does not do what you want, what do you want to change?


    Please edit your post and wrap your code with code tags:

    [code]
    **YOUR CODE GOES HERE**
    [/code]

    to get highlighting and preserve formatting.

    --- Update ---

    Also posted at: https://www.dreamincode.net/forums/t...-in-jtable-th/
    If you don't understand my answer, don't ignore it, ask a question.

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