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

public class Case extends JComponent {

	@Override
	public void paintComponent(Graphics pinceau) {
		Graphics secondPinceau = pinceau.create();

		if (this.isOpaque()) {
			secondPinceau.setColor(this.getBackground());
			secondPinceau.fillRect(0, 0, this.getWidth(), this.getHeight());
		}

		secondPinceau.setColor(Color.BLACK);
		secondPinceau.drawRect(0, 0, this.getWidth()-3, this.getHeight()-3);
		secondPinceau.drawRect(1, 1, this.getWidth()-4, this.getHeight()-4);
		secondPinceau.drawRect(2, 2, this.getWidth()-5, this.getHeight()-5);

		for (int i = 0; i != 3; i++) {
			for (int j = 0; j != 3; j++) {
				secondPinceau.drawRect(this.getWidth()*i/3, this.getHeight()*j/3, this.getWidth()/3, this.getHeight()/3);
			}
		} 
	}
}