NetBeans JComboBox и картинки

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package currencyconvertor;
 
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JOptionPane;
 
/**
 *
 * @author Сергей
 */
public class MainFrame extends javax.swing.JFrame {
 
    /**
     * Creates new form MainFrame
     */
    public MainFrame() throws IOException  {
        initComponents();
        resultTextField.setVisible(false);
        resultLbl.setVisible(false);
        // ======================== Мой код ===================== //
        // =========== Object Currency ========================== //
        Currency curr = new Currency();
        // =========== Object Currency ========================== //
        
        // Icons Combo Box //
        String[] items = { "RUR", "USD", "EUR", "UAH" };
        fromComboBox.setModel(new javax.swing.DefaultComboBoxModel(items));
        toComboBox.setModel(new javax.swing.DefaultComboBoxModel(items));
        // Icons Combo Box //
        
        
        // ======================== Мой код ===================== //
    }
 
    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {
 
        jDialog1 = new javax.swing.JDialog();
        fromComboBox = new javax.swing.JComboBox();
        toComboBox = new javax.swing.JComboBox();
        jLabel1 = new javax.swing.JLabel();
        inValueTextField = new javax.swing.JTextField();
        jLabel2 = new javax.swing.JLabel();
        jLabel3 = new javax.swing.JLabel();
        ConvertButton = new javax.swing.JButton();
        ClearButton = new javax.swing.JButton();
        resultLbl = new javax.swing.JLabel();
        resultTextField = new javax.swing.JTextField();
        showExchangeButton = new javax.swing.JButton();
 
        javax.swing.GroupLayout jDialog1Layout = new javax.swing.GroupLayout(jDialog1.getContentPane());
        jDialog1.getContentPane().setLayout(jDialog1Layout);
        jDialog1Layout.setHorizontalGroup(
            jDialog1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 400, Short.MAX_VALUE)
        );
        jDialog1Layout.setVerticalGroup(
            jDialog1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 300, Short.MAX_VALUE)
        );
 
        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("Конвертор валют");
        setBackground(new java.awt.Color(255, 255, 255));
        setCursor(new java.awt.Cursor(java.awt.Cursor.DEFAULT_CURSOR));
        setName(""); // NOI18N
        setResizable(false);
 
        fromComboBox.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Item 1", "Item 2", "Item 3", "Item 4" }));
 
        toComboBox.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Item 1", "Item 2", "Item 3", "Item 4" }));
 
        jLabel1.setText("Введите сумму:");
 
        jLabel2.setText("В валюте:");
 
        jLabel3.setText("Пересчитать на:");
 
        ConvertButton.setText("Расчитать");
        ConvertButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                ConvertButtonActionPerformed(evt);
            }
        });
 
        ClearButton.setText("Очистить");
        ClearButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                ClearButtonActionPerformed(evt);
            }
        });
 
        resultLbl.setText("Результат:");
        resultLbl.setName("resultLbl"); // NOI18N
 
        resultTextField.setEditable(false);
        resultTextField.setName(""); // NOI18N
 
        showExchangeButton.setText("Показать курс");
        showExchangeButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                showExchangeButtonActionPerformed(evt);
            }
        });
 
        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jLabel1)
                        .addContainerGap())
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(resultLbl)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(resultTextField))
                    .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                        .addComponent(ConvertButton)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(showExchangeButton)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                        .addComponent(ClearButton))
                    .addComponent(inValueTextField)
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jLabel3)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                        .addComponent(toComboBox, 0, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jLabel2)
                        .addGap(51, 51, 51)
                        .addComponent(fromComboBox, 0, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addComponent(jLabel1)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(inValueTextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel2)
                    .addComponent(fromComboBox, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel3)
                    .addComponent(toComboBox, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(21, 21, 21)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                        .addComponent(ConvertButton)
                        .addComponent(showExchangeButton))
                    .addComponent(ClearButton))
                .addGap(17, 17, 17)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(resultLbl)
                    .addComponent(resultTextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
        );
 
        pack();
        java.awt.Dimension screenSize = java.awt.Toolkit.getDefaultToolkit().getScreenSize();
        java.awt.Dimension dialogSize = getSize();
        setLocation((screenSize.width-dialogSize.width)/2,(screenSize.height-dialogSize.height)/2);
    }// </editor-fold>
 
    private void showExchangeButtonActionPerformed(java.awt.event.ActionEvent evt) {
 
        String U = String.format("%.4f",(1 / (Currency.uahRate / 10)) * 10);
        String E = String.format("%.4f",(1 * Currency.eurRate) / (Currency.uahRate / 10));
        String S = String.format("%.4f",(1 * Currency.usdRate) / (Currency.uahRate / 10));
                
    JOptionPane.showMessageDialog(jDialog1,
              "1 $ = "+S+" грн.\n"
            + "1 € = "+E+" грн.\n"
            + "10 р = "+U,
            "Курс валют",JOptionPane.PLAIN_MESSAGE);
    }
 
    private void ConvertButtonActionPerformed(java.awt.event.ActionEvent evt) {
        try {        
            resultTextField.setText(Currency.getResult(Double.valueOf(inValueTextField.getText()),
                    fromComboBox.getSelectedIndex(), toComboBox.getSelectedIndex())+" "+toComboBox.getSelectedItem());
        } catch (IOException ex) {
            Logger.getLogger(MainFrame.class.getName()).log(Level.SEVERE, null, ex);
        }
        resultTextField.setVisible(true);
        resultLbl.setVisible(true);
    }
 
    private void ClearButtonActionPerformed(java.awt.event.ActionEvent evt) {
        resultTextField.setVisible(false);
        resultLbl.setVisible(false);
        fromComboBox.setSelectedIndex(0);
        toComboBox.setSelectedIndex(0);
        inValueTextField.setText(null);
    }
 
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see [url]http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html[/url] 
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(MainFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(MainFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(MainFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(MainFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>
 
        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                try {
                    new MainFrame().setVisible(true);
                } catch (IOException ex) {
                    Logger.getLogger(MainFrame.class.getName()).log(Level.SEVERE, null, ex);
                }
            }
        });
    }
    // Variables declaration - do not modify
    private javax.swing.JButton ClearButton;
    private javax.swing.JButton ConvertButton;
    private javax.swing.JComboBox fromComboBox;
    private javax.swing.JTextField inValueTextField;
    private javax.swing.JDialog jDialog1;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel resultLbl;
    private javax.swing.JTextField resultTextField;
    private javax.swing.JButton showExchangeButton;
    private javax.swing.JComboBox toComboBox;
    // End of variables declaration
}

import javax.swing.*;
import java.awt.*;
 
/**
 * @author Drygba
 *         Date: 02.02.13
 */
public class ComboBoxRender extends JLabel implements ListCellRenderer{
 
    private ImageIcon[] icon;
    private String[] textBox;
    public ComboBoxRender(ImageIcon[] icon, String[] textBox){
        this.icon = icon;
        this.textBox = textBox;
    }
 
    @Override
    public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus){
        int selecIndex = ((Integer)value).intValue();
        setIcon(icon[selecIndex]);
        setText(textBox[selecIndex]);
        return this;
    }
}
import javax.swing.*;
import java.awt.*;
 
/**
 * @author Drygba
 *         Date: 02.02.13
 */
public class  extends JLabel implements ListCellRenderer{
 
    private ImageIcon[] icon;
    private String[] textBox;
    public ComboBoxRender(ImageIcon[] icon, String[] textBox){
        this.icon = icon;
        this.textBox = textBox;
    }
 
    @Override
    public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus){
        int selecIndex = ((Integer)value).intValue();
        setIcon(icon[selecIndex]);
        setText(textBox[selecIndex]);
        return this;
    }
}

import javax.swing.*;
 
/**
 * @author Drygba
 *         Date: 02.02.13
 */
public class ComboBoxPic extends JFrame{
 
    ComboBoxPic(){
        super("ComboPic");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }
    public static void main(String[] arg){
        ComboBoxPic cbp = new ComboBoxPic();
        String[] cbText = {"Австралия","Габон"};
        int sizeBox = cbText.length;
        Integer[] intArray = new Integer[sizeBox];
        for (int i = 0; i<sizeBox; i++){
            intArray[i] = new Integer(i);
        }
        ImageIcon[] image = new ImageIcon[sizeBox];
        image[0] = new ImageIcon("au.png");
        image[1] = new ImageIcon("gabon.png");
 
 
        JComboBox cb = new JComboBox(intArray);
        cb.setRenderer(new ComboBoxRender(image, cbText));
 
        cbp.add(cb);
        cbp.pack();
        cbp.setVisible(true);
    }
}