Java ImageDemo prac

package shalYIT;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;

public class JImageDemo implements ItemListener{
    ImageIcon img;
    JComboBox<String> jcb;
    JLabel jl;
    JFrame jf;
    JPanel jp;
    JImageDemo() {
        jcb = new JComboBox<String>();
        jf = new JFrame();

        jcb.addItem("cat");jcb.addItem("dog");jcb.addItem("mouse");
        jcb.addItemListener(this);

        jl = new JLabel("testing");
        img = new ImageIcon("C:\\Users\\XKC21\\Pictures\\cat.jpg");
        jl.setIcon(img);

        jp = new JPanel();
        jp.add(jcb);jp.add(jl);

        jf = new JFrame();
        jf.add(jp);
        jf.pack();
        jf.setVisible(true);

    }
    public static void main(String[] args) {
        new JImageDemo();
    }
    @Override
    public void itemStateChanged(ItemEvent ev) {
        //System.out.println("C:\\Users\\XKC21\\Pictures\\" + ev.getItem().toString() + ".jpg");
        img = new ImageIcon("C:\\Users\\XKC21\\Pictures\\" + ev.getItem().toString() + ".jpg");
        jl.setIcon(img);
    }
}