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

public class Fenetre extends JFrame {
	public Fenetre() {
		this.setSize(400, 400);
		this.setLocation(100, 100);
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		this.setLayout(new GridLayout(2, 2));

		JPanel[] panneaux = new JPanel[4];
		Color[] couleursFond = {Color.CYAN, Color.PINK, Color.MAGENTA, Color.YELLOW};
		Color[] couleursTriangles = {Color.MAGENTA, Color.YELLOW, Color.CYAN, Color.BLUE};

		for (int i = 0; i != 4; i++) {
			panneaux[i] = new JPanel();
			panneaux[i].setLayout(new BorderLayout());
			panneaux[i].setOpaque(true);
			panneaux[i].setBackground(couleursFond[i]);
			panneaux[i].add(new Triangle(couleursTriangles[i]), BorderLayout.CENTER);
			this.add(panneaux[i]);
		} 
	}
}