Switch Case generation

package javaGame;

import java.awt.GridLayout;

import javax.swing.JFrame;

import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.util.Random;

import javax.swing.JButton;
import javax.swing.ImageIcon;
import javax.swing.Icon;

public class CardButton extends JFrame {
    Clicked handler;
    JButton hold;
    JButton held;
    int counter = 0;
    Icon pic1;
    Icon pic2;

    public JButton buttons[] = new JButton[16];
    ImageIcon imagesicons[] = new ImageIcon[16];

    public CardButton() {
        super("CardMatch");
        setLayout(new GridLayout(4, 4));
        handler = new Clicked();

        // generate the buttons
        for (int i = 0; i < 16; i++) {
            buttons[i] = new JButton();

            buttons[i].addActionListener(handler);// add button to action
                                                    // listener
            add(buttons[i]);// add button to grid
        }

        // generate array with random images
        int counter1 = 0;
        int counter2 = 0;
        int counter3 = 0;
        int counter4 = 0;
        int counter5 = 0;
        int counter6 = 0;
        int counter7 = 0;
        int counter8 = 0;
        for (int i = 0; i < 16; i++) {
            Random rnd = new Random();
            int num = 1 + rnd.nextInt(8);

            switch (num) {
            case 1:
                if (counter1 < 2) {
                    imagesicons[i] = new ImageIcon(getClass().getResource(
                            (num) + ".png"));
                    counter1++;
                }

                else {
                    i--;
                    continue;
                }

                break;
            case 2:
                if (counter2 < 2) {
                    imagesicons[i] = new ImageIcon(getClass().getResource(
                            (num) + ".png"));
                    counter2++;
                }

                else {
                    i--;
                    continue;
                }

                break;
            case 3:
                if (counter3 < 2) {
                    imagesicons[i] = new ImageIcon(getClass().getResource(
                            (num) + ".png"));
                    counter3++;
                }

                else {
                    i--;
                    continue;
                }

                break;
            case 4:
                if (counter4 < 2) {
                    imagesicons[i] = new ImageIcon(getClass().getResource(
                            (num) + ".png"));
                    counter4++;
                }

                else {
                    i--;
                    continue;
                }

                break;
            case 5:
                if (counter5 < 2) {
                    imagesicons[i] = new ImageIcon(getClass().getResource(
                            (num) + ".png"));
                    counter5++;
                }

                else {
                    i--;
                    continue;
                }

                break;
            case 6:
                if (counter6 < 2) {
                    imagesicons[i] = new ImageIcon(getClass().getResource(
                            (num) + ".png"));
                    counter6++;
                }

                else {
                    i--;
                    continue;
                }

                break;
            case 7:
                if (counter7 < 2) {
                    imagesicons[i] = new ImageIcon(getClass().getResource(
                            (num) + ".png"));
                    counter7++;
                }

                else {
                    i--;
                    continue;
                }

                break;
            case 8:
                if (counter8 < 2) {
                    imagesicons[i] = new ImageIcon(getClass().getResource(
                            (num) + ".png"));
                    counter8++;
                }

                else {
                    i--;
                    continue;
                }

                break;

            default:
                break;
            }

        }



    }

    private class Clicked implements ActionListener { // handles event

        public void actionPerformed(ActionEvent e) {

            hold = (JButton) e.getSource();
            if (hold.getIcon() == null) {
                for (int i = 0; buttons[i] != hold; i++)

                    if (counter == 0) {
                        hold.setIcon(imagesicons[i]);
                        pic2 = imagesicons[i];
                        counter++;
                        held = hold;
                    } else {
                        hold.setIcon(imagesicons[i]);
                        pic1 = imagesicons[i];
                        // checkWinner(pic1,hold);TODO
                        counter = 0;
                    }
            }
        }

    }

}