He estado tratando de reproducir este diseño:

Aquí estoy:

utilizando:

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

public class Keyb {

    private JFrame f = new JFrame("Keyboard");

    private JPanel keyboard = new JPanel();

    private static final String[][] key = {
        {"`", "1", "2", "3", "4", "5", "6", "7", "8", "9", "0", "-", "=", "Backspace"},
        {"Tab", "Q", "W", "E", "R", "T", "Y", "U", "I", "O", "P", "[", "]", "\\"},
        {"Caps", "A", "S", "D", "F", "G", "H", "J", "K", "L", ";", "'", "Enter"},
        {"Shift", "Z", "X", "C", "V", "B", "N", "M", ",", ".", "/", "Shift", "\u2191"},
        {" ", "\u2190", "\u2193", "\u2192"}
    };

    public Keyb() {
        keyboard.setLayout(new GridBagLayout());

        JPanel pRow;
        GridBagConstraints c = new GridBagConstraints();
        c.anchor = GridBagConstraints.WEST;
        c.weightx = 1d;

        for (int row = 0; row < key.length; ++row) {
            pRow = new JPanel(new GridBagLayout());

            c.gridy = row;

            for (int col = 0; col < key[row].length; ++col)
                pRow.add(new JButton(key[row][col]));

            keyboard.add(pRow, c);
        }

        f.add(keyboard);
    }

    public void launch() {
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.pack();
        f.setVisible(true);
    }

    public static void main(String[] args) {
        Keyb ui = new Keyb();
        ui.launch();
    }
}

¿Cómo ajusto el tamaño de los botones y los alineo perfectamente, especialmenteTab, Caps, Shift, Backspace, Enter y la barra espaciadora, tal vez sin usar el conjunto? Métodos de tamaño?

¿Se puede hacer de una mejor manera con otros administradores de diseño?

Nuevo en Java, por lo que cualquier otra sugerencia es bienvenida.