Pb image swing sous eclipse

import java.awt.BorderLayout;

import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
public class MonApp extends JFrame {
private static final long serialVersionUID = 1L;
public MonApp(String titre) {
super(titre);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
init();
}
private void init()
{
JLabel label = new JLabel(new ImageIcon("picture.png") );
this.add(label, BorderLayout.CENTER);
this.pack();
}
public static void main(String[] args) {
MonApp app = new MonApp("Afficher image");
app.setVisible(true);
}
}