wordle/GUI.java

import java.awt.Graphics;

import javax.swing.JFrame;
import javax.swing.JPanel;

public class GUI extends JPanel {

	private static final long serialVersionUID = 1L;
	private JFrame frame;
	
	private Letter[][] letters;
	
	public GUI() {
		frame = new JFrame();
		frame.setSize(1000, 800);
		frame.setTitle("Wordle");
		frame.setVisible(true);
		frame.setLocationRelativeTo(null);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.add(this);

		letters = new Letter[5][6];
		for (int x = 0; x < letters.length; x++) {
			for (int y = 0; y < letters[0].length; y++) {
				letters[x][y] = new Letter();
			}
		}
	}
	
	@Override
	protected void paintComponent(Graphics g) {
		g.drawRect(100, 100, 100, 100);
	}
}