Refactoring Applied: Extract Method

[joamrend]

While reviewing the code in the UI.java class and practicing refactoring techniques, I implemented the following correction to improve the class's overall structure and readability.

`package simplejavacalculator;

public class UI2 {

private final JFrame frame;
private final JPanel panel;
private final JTextArea text;
private final JButton[] buttons;
private final CalculatorController controller;

public UI2() throws IOException {
    frame = new JFrame("Calculator PH");
    panel = new JPanel();
    text = new JTextArea(1, 30);
    buttons = new JButton[10];

    controller = new CalculatorController(text);

    initComponents();
}

private void initComponents() {
    panel.setLayout(new BoxLayout(panel, BoxLayout.Y_AXIS));

    for (int i = 0; i < 10; i++) {
        buttons[i] = new JButton(String.valueOf(i));
        buttons[i].addActionListener(new UIEventHandler(controller, buttons[i]));
        panel.add(buttons[i]);
    }

    frame.add(panel);
    frame.setSize(450, 450);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setVisible(true);
}

public JTextArea getText() {
    return text;
}

}`