1-) Java - DİNAMİK COMBOBOX OLUŞTURUP MİSAL 5 E TIKLADIGIMIZDA 5 TANE BUTTON OLUŞTURU VE BUTTONA TIKLAMA OLAYINDA EKRANA O BUTONA TIKLADI YAZAR

public class dC extends javax.swing.JFrame {

public dC() {

initComponents();

jPanel1.removeAll();

GridLayout grdLayout = new GridLayout();

jPanel1.setLayout(grdLayout);

JComboBox jb = new JComboBox();

for (int i = 0; i < 10; i++) {

jb.addItem(i + 1); }

jPanel1.add(jb);

jb.addActionListener(new dC.oku()); }

class oku implements ActionListener {

public void actionPerformed(ActionEvent e) {

JComboBox jcc = (JComboBox) e.getSource();

jLabel1.setText(String.valueOf(jcc.getSelectedItem()));

jPanel2.removeAll();

int count = Integer.parseInt(jcc.getSelectedItem().toString());

GridLayout grdLayout = new GridLayout();

jPanel2.setLayout(grdLayout);

for (int i = 0; i < count; i++) {

JButton btn = new JButton();

String index = String.valueOf(i + 1);

btn.setText(index);

btn.setName("btn" + index);

jPanel2.add(btn);

btn.addActionListener(new dC.btnListener()); }

grdLayout = null;

jPanel2.revalidate();

// validate(); NOT NECESSARY

} }

class btnListener implements ActionListener {

public void actionPerformed(ActionEvent e) {

JButton b = (JButton) e.getSource();

JOptionPane.showMessageDialog(rootPane, b.getText() + " nesnesine Tıklandı"); } }