import javax.swing.*; import java.awt.*; public class Main { public static void main(String[] args) { Fenetre fenetre = new Fenetre(); fenetre.setVisible(true); GridLayout tabl = new GridLayout(2,2); fenetre.setLayout(tabl); for(int i = 0; i < 4; i++){ fenetre.add(new Declinaisons()); } } }