Aide charger image avec java

import javax.swing.ImageIcon;  
import javax.swing.JFrame;  
import javax.swing.JLabel;  

public class Test1
{
	public static void main(String[] args)
	{
		JFrame frame = new JFrame();
		frame.add(new JLabel(new ImageIcon("C:/test.png")));
		frame.pack();
		frame.setVisible(true);
	}
}

import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JPanel;

class ImagePanel extends JPanel
{
	private static final long serialVersionUID = 1;
	
	private final BufferedImage img;
	
	ImagePanel(String fileName) throws IOException
	{
		img = ImageIO.read(new File(fileName));
	}
	
	@Override
	public void paintComponent(Graphics g)
	{
		super.paintComponent(g);
		g.drawImage(img,0,0,null);
	}
}

public class Test2
{
	public static void main(String...args) throws IOException
	{
		JFrame frame = new JFrame();		
		frame.add(new ImagePanel("C:/test.png"));
		frame.setSize(300,300);
		frame.setVisible(true);
	}
}