import java.awt.*;
import java.io.*;
import javax.swing.*;

public class ImagePanel extends JPanel{
	
	private ImageIcon imageIcon;
	public ImagePanel(File imageFile){
		super();
		imageIcon = new ImageIcon(imageFile.getAbsolutePath());
		setPreferredSize(new Dimension(imageIcon.getIconWidth(), imageIcon.getIconHeight()));	
	}
	
	public ImagePanel(String imageFileName){
		super();
		imageIcon = new ImageIcon(imageFileName);
		setPreferredSize(new Dimension(imageIcon.getIconWidth(), imageIcon.getIconHeight()));	
	}
	
	public void paint(Graphics g){
		super.paintComponent(g);
		g.drawImage(imageIcon.getImage(),0,0,this);
	}
}

/*	ImagePanelTest.java
*/

import java.awt.*;
import java.io.*;
import javax.swing.*;

public class ImagePanelTest extends JFrame{
	
	public ImagePanelTest(){
		super("ImagePanelTest");
		init();
	}
	public static void main(String[] args){
		ImagePanelTest test = new ImagePanelTest();
	}
	
	public void init(){
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		File imageFile = new File("EinsteinBike.jpg");
		getContentPane().add(new ImagePanel(imageFile), BorderLayout.CENTER);
		pack();
		setLocationRelativeTo(null); //centers everything on screen
		show();
	}
}