import java.awt.Color;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.Image;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.util.ArrayList;
import java.util.Random;

import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextPane;
import javax.swing.JToggleButton;
import javax.swing.SwingConstants;

public class Choose {

JFrame frame;
private JLabel lblChoose;
private JTextPane txtInfo;
private JButton submitButton;
private JLabel lblChoices, c1, c2, c3;
private JPanel panel;
private final String SOURCE = "resources\images\";

public Choose() {
    initialize();
}

private void initialize() {
    frame = new JFrame();
    frame.getContentPane().setBackground(Color.WHITE);
    frame.setBounds(100, 100, 537, 671);
    frame.setLocationRelativeTo(null);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.getContentPane().setLayout(null);

    lblChoose = new JLabel("Choose images");
    lblChoose.setBounds(128, 21, 262, 32);
    lblChoose.setHorizontalAlignment(SwingConstants.CENTER);
    lblChoose.setFont(new Font("Arial", Font.PLAIN, 27));
    frame.getContentPane().add(lblChoose);

    txtInfo = new JTextPane();
    txtInfo.setBounds(51, 51, 429, 57);
    txtInfo.setFont(new Font("Arial", Font.PLAIN, 14));
    txtInfo.setEditable(false);
    txtInfo.setText("                                        choose 3 images");
    frame.getContentPane().add(txtInfo);

    submitButton = new JButton("submit");
    submitButton.setBounds(397, 578, 83, 28);
    submitButton.setForeground(Color.BLACK);
    submitButton.setBackground(Color.WHITE);
    submitButton.setFont(new Font("Calibri", Font.PLAIN, 12));
    frame.getContentPane().add(submitButton);

    c1 = new JLabel();
    c1.setForeground(new Color(0, 0, 0));
    c1.setBackground(Color.WHITE);
    c1.setBounds(71, 540, 69, 66);
    frame.getContentPane().add(c1);

    c2 = new JLabel();
    c2.setForeground(new Color(0, 0, 0));
    c2.setBackground(Color.WHITE);
    c2.setBounds(141, 540, 69, 66);
    frame.getContentPane().add(c2);

    c3 = new JLabel();
    c3.setForeground(new Color(0, 0, 0));
    c3.setBackground(Color.WHITE);
    c3.setBounds(211, 540, 69, 66);
    frame.getContentPane().add(c3);

    lblChoices = new JLabel("your choices:");
    lblChoices.setBackground(Color.WHITE);
    lblChoices.setFont(new Font("Calibri", Font.PLAIN, 13));
    lblChoices.setBounds(71, 525, 92, 17);
    frame.getContentPane().add(lblChoices);

    panel1();
}

private void panel1() {

    panel = new JPanel();
    panel.setBackground(Color.WHITE);
    panel.setBounds(71, 120, 382, 398);

    GridLayout layout = new GridLayout(5, 5);
    panel.setLayout(layout);
    layout.setHgap(7);
    layout.setVgap(7);
    layout.layoutContainer(panel);

    createButtons();
}

private void createButtons() {

    JToggleButton[][] buttons = new JToggleButton[5][4];

    ArrayList<Integer> list = new ArrayList<Integer>();

    Random rand = new Random();
    for (int i = 0; i < buttons.length; i++) {
        for (int j = 0; j < buttons[i].length; j++) {
            int randomNum = rand.nextInt((300 - 1) + 1) + 1;

            while (list.contains(randomNum)) {
                randomNum = rand.nextInt((300 - 1) + 1) + 1;

            }
            list.add(randomNum);

            buttons[i][j] = new JToggleButton();
            buttons[i][j].setBackground(Color.WHITE);
            buttons[i][j].putClientProperty("randomNum", randomNum);
            ImageIcon icon = new ImageIcon(SOURCE + randomNum + ".gif");

            int offset = buttons[i][j].getInsets().left;
            buttons[i][j].setIcon(
                    resizeIcon(icon, buttons[i][j].getWidth() - offset, buttons[i][j].getHeight() - offset));

            panel.add(buttons[i][j]);

            buttons[i][j].addItemListener(new ItemListener() {
                public void itemStateChanged(ItemEvent e) {
                    int img = (Integer) ((JToggleButton) e.getSource()).getClientProperty("randomNum");

                    if (e.getStateChange() == ItemEvent.SELECTED) {
                        System.out.println("image " + img + " selected");

                        c1.setIcon(new ImageIcon(new ImageIcon(SOURCE + img + ".gif").getImage()
                                .getScaledInstance(65, 65, Image.SCALE_DEFAULT)));
                        c2.setIcon(new ImageIcon(new ImageIcon(SOURCE + img + ".gif").getImage()
                                .getScaledInstance(65, 65, Image.SCALE_DEFAULT)));
                        c3.setIcon(new ImageIcon(new ImageIcon(SOURCE + img + ".gif").getImage()
                                .getScaledInstance(65, 65, Image.SCALE_DEFAULT)));

                    } else if (e.getStateChange() == ItemEvent.DESELECTED) {
                        System.out.println("image " + img + " deselected");
                        c1.setIcon(new ImageIcon());
                        c2.setIcon(new ImageIcon());
                        c3.setIcon(new ImageIcon());
                    }
                }
            });

            frame.getContentPane().add(panel);
        }
    }
}

private Icon resizeIcon(ImageIcon icon, int resizedWidth, int resizedHeight) {
    Image img = icon.getImage();
    Image resizedImage = img.getScaledInstance(65, 65, java.awt.Image.SCALE_SMOOTH);
    return new ImageIcon(resizedImage);
}
}