problem with the visibility of a list in a table

the list contains some records and when you click it, it is added to the table but the table is superimposed on the list

I do not know if there is a property of the table that allows me to remove that or the list so that it does not happen

this is the code of the list

private void Lista2MouseClicked(java.awt.event.MouseEvent evt) {                                    
    Modelo = (DefaultTableModel) TablaVentas.getModel();
    String nombrepuesto;
    int size = 0, cont = 0;
    String name = Lista2.getSelectedValue();
    BuscarRespuesto.setText(name);
    size = Modelo.getRowCount();

    if (size == 0) {
        MostrarVentas(name);
        Calcular();
    } else {
        if (size == 26) {
            JOptionPane.showMessageDialog(this, "disculpe solo 26 repuestos", "Error", JOptionPane.INFORMATION_MESSAGE);
        } else {
            size = Modelo.getRowCount();
            for (int i = 0; i < Modelo.getRowCount(); i++) {
                nombrepuesto = (String) Modelo.getValueAt(i, 2);
                if (!name.equals(nombrepuesto)) {
                    cont = 1;
                } else {
                    cont = 2;
                    break;
                }
            }
            if (cont == 1) {
                if (size > 26) {
                   JOptionPane.showMessageDialog(this, "disculpe solo 26 repuestos", "Error", JOptionPane.INFORMATION_MESSAGE);
                } else {
                    MostrarVentas(name);
                    Calcular();
                }
            } else {
                   JOptionPane.showMessageDialog(this, "ya selecciono ese repuesto", "Error", JOptionPane.INFORMATION_MESSAGE);
            }
        }
    }
}                     

use the click event to be added to the table, I sent it to show by parameter the name and it shows it along with the other records

the hierarchy