Perlu bantuan karo Jframe. Kita nulis program cilik pisanan

Dadi aku miwiti nulis program cilik kanggo ngetung bonus. Saiki aku ngadhepi masalah nggawe obyek ing jendela kapindho. Sampeyan perlu kanggo nggawe obyek ing ndhuwur (bisa label, Mungkin siji Tabel) saka ngendi aku bisa njupuk data. Saiki, nalika kita ngeklik tombol "Tambah", kita nggawe label, lan aku ora bisa mbayangake carane nyuwek teks label kasebut (contone, teks label kaping 2, yen sawise aku wis nggawe. label kaping 3). Saenipun: nggawe meja. Njupuk nomer saka baris kapindho kolom kapindho lan nulis ing jeneng tombol. Mangga bantuan programmer java pemula. Inggih, ing umum, mungkin iki kabeh digawe beda? import javax.swing.*; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.util.HashMap; import java.util.Iterator; import java.util.Map; public class Interface { public static void main(String[] args) { SwingUtilities.invokeLater(new Runnable() { @Override public void run() { new Interface(); } }); } Interface() { //ОСНОВНОЕ ОКНО//////////////////////////////////////////////////// JFrame frame = new JFrame("Основное окно"); frame.setSize(240, 500); frame.setResizable(false); frame.setLocation(0/*(int) screenSize().getHeight() * 1/ 100*/, (int) screenSize().getWidth() * 25 / 100); frame.setLayout(new BorderLayout()); frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); frame.setVisible(true); //ПАНЕЛЬ JPanel jpn = new JPanel(); JLabel lbl = new JLabel("Первая прога"); jpn.add(lbl); //ПАНЕЛЬ 2 JPanel jpn2 = new JPanel(); JLabel lbl2 = new JLabel("Текущий бонус: "); JButton btn = new JButton("0"); jpn2.add(lbl2); jpn2.add(btn); //ДОБАВЛЕНИЕ ПАНЕЛЕЙ frame.add(jpn, BorderLayout.NORTH); frame.add(jpn2, BorderLayout.CENTER); //ОКНО БОНУСОВ////////////////////////////////////////////////////// JFrame secondFrame = new JFrame("Окно бонусов"); secondFrame.setSize(250, 300); secondFrame.setResizable(false); secondFrame.setLocationRelativeTo(null); secondFrame.setLayout(new BorderLayout()); secondFrame.setUndecorated(false); //ПАНЕЛЬ 1 JPanel jppF1 = new JPanel(new GridLayout(3, 2, 3, 5)); //ПАНЕЛЬ 2 JPanel jppF2 = new JPanel(new GridLayout(5, 2)); JLabel lblpF3 = new JLabel("Тип an object"); jppF2.add(lblpF3); String[] getUnitNames = {"Тип1","Тип2","Тип3","Тип4","Тип5"}; JComboBox jcbpF = new JComboBox<>(getUnitNames); jppF2.add(jcbpF); JLabel lblpF4 = new JLabel("Количество"); jppF2.add(lblpF4); JTextField tfpF = new JTextField(15); jppF2.add(tfpF); jppF2.add(new JLabel()); JButton btnpF = new JButton("Добавить"); jppF2.add(btnpF); //ДОБАВЛЕНИЕ ПАНЕЛЕЙ secondFrame.add(jppF1, BorderLayout.NORTH); secondFrame.add(jppF2, BorderLayout.SOUTH); ///////////////К Н О П К И //////////////////////////////////////////// btn.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { if (!secondFrame.isVisible()) { secondFrame.setVisible(true); } } }); btnpF.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { JLabel lblpF1 = new JLabel(""); if (lblpF1.getText().equals(jcbpF.getSelectedItem())) { lblpF1.setText("asdasdas"); } else { jppF1.add(lblpF1); lblpF1.setText("" + jcbpF.getSelectedItem() + " (" + tfpF.getText() + ")"); new GroupLayout(jppF1); jppF1.setLayout(new GridLayout(3, 2, 3, 5)); } } }); /////////////////////////////////////////////////////////////////////// } private static Dimension screenSize() { Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize(); return screenSize; } private static Integer typeCost(HashMap map, String z) { int q = 0; Iterator > qqe = map.entrySet().iterator(); while (qqe.hasNext()) { Map.Entry para = qqe.next(); if (para.getKey().equals(z)) q = para.getValue(); } return q; } }