public class sdz {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Fenetre fenetre = new Fenetre() ;

	}

}

import java.awt.BorderLayout;

 
import javax.swing.JButton;
import javax.swing.JFrame;




public class Fenetre extends JFrame {
	
	private Panneau pan = new Panneau() ;
	private JButton bouton = new JButton("Mon premier bouton") ;
	public Fenetre()
	{
		this.setTitle("Animation") ;
		this.setSize(500,500) ;
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		this.setLocationRelativeTo(null) ;
		this.setLayout(new BorderLayout());
		this.getContentPane().add(pan , BorderLayout.CENTER) ;
		this.getContentPane().add(bouton , BorderLayout.SOUTH) ;
		this.setVisible(true) ;
		go();
		

	}
	public void go() 
	{
		int x = pan.getPosX(), y = pan.getPosY();
		boolean backX = false, backY = false ;
		for(;;)
		{
			if(x < 1)
			{
				backX = false ;
			}
			if(x == pan.getWidth() - 50)
			{
				backX = true ;
			}
			if(y < 1)
			{
				backY = false ;
			}
			if(y == pan.getHeight() - 50)
			{
				backY = true ;
			}
			if(!backX)
			{
				pan.setPosX(x++) ;
			}
			else
			{
				pan.setPosX(x--) ;
			}
			if(!backY)
			{
				pan.setPosY(y++) ;
			}
			else
			{
				pan.setPosY(y--) ;
			}
			
			pan.repaint() ;
			try 
			{
                Thread.sleep(2);
            } 
			catch (InterruptedException e) 
			{
                // TODO Auto-generated catch block
                e.printStackTrace();
        }

		}
	}

}

import java.awt.Color;
import java.awt.Graphics;


import javax.swing.JPanel;


public class Panneau extends JPanel {
	
	int posX = -50 ;
	int posY = -50 ;
	
	public void paintComponent(Graphics g)
	{
		g.setColor(Color.WHITE) ;
		g.fillRect(0, 0, this.getWidth(), this.getHeight()) ;
		g.setColor(Color.BLUE); 	
		g.fillRect(posX, posY, 50, 50) ;
	}
	
	public int getPosX()
	{
		return posX ;
	}
	public void setPosX(int posX)
	{
		this.posX = posX ;
	}
	public int getPosY()
	{
		return posY ;
	}
	public void setPosY(int posY)
	{
		this.posY = posY ;
	}

}

import java.awt.Color;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.io.File;
import java.io.IOException;
 
import javax.imageio.ImageIO;
import javax.swing.JButton;
 
 
public class Bouton extends JButton{
 
         private String name;
     private Image img;
         
     public Bouton(String str){
             super(str);
             this.name = str;
             
             try {
                     img = ImageIO.read(new File("image.png"));
                } catch (IOException e) {
                        e.printStackTrace();
                }
                        
 
     }
    
     public void paintComponent(Graphics g){
                 
             Graphics2D g2d = (Graphics2D)g;
            
             GradientPaint gp = new GradientPaint(0, 0, Color.blue, 0, 20, Color.cyan, true);
             g2d.setPaint(gp);
            // g2d.fillRect(0, 0, this.getWidth(), this.getHeight());
            g2d.drawImage(img, 0, 0, this.getWidth(), this.getHeight(), this);
             
             g2d.setColor(Color.black);
             g2d.drawString(this.name, this.getWidth() / 2 - (this.getWidth() / 2 /4), (this.getHeight() / 2) + 5);
            
     }
 
}