使用 Swing 组件库用Java写一个gui能够实现对停车位的信息管理（车位号、车主姓名、性别、年龄、 车牌号）,要代码不用解释过程

这是一份使用 Swing 组件库在 Java 中创建 GUI 来管理停车位信息（车位号、车主姓名、性别、年龄、车牌号）的代码：

import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;

public class ParkingInfoManager {

    private JFrame mainFrame;
    private JLabel headerLabel;
    private JLabel statusLabel;
    private JPanel controlPanel;
    private JLabel msglabel;

    public ParkingInfoManager() {
        prepareGUI();
    }

    public static void main(String[] args) {
        ParkingInfoManager swingControlDemo = new ParkingInfoManager();
        swingControlDemo.showTextFieldDemo();
    }

    private void prepareGUI() {
        mainFrame = new JFrame("停车位信息管理");
        mainFrame.setSize(400, 400);
        mainFrame.setLayout(new GridLayout(3, 1));

        headerLabel = new JLabel("", JLabel.CENTER);
        statusLabel = new JLabel("", JLabel.CENTER);

        statusLabel.setSize(350, 100);
        mainFrame.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent windowEvent) {
                System.exit(0);
            }
        });
        controlPanel = new JPanel();
        controlPanel.setLayout(new FlowLayout());

        mainFrame.add(headerLabel);
        mainFrame.add(controlPanel);
        mainFrame.add(statusLabel);
        mainFrame.setVisible(true);
    }

    private void showTextFieldDemo() {
        headerLabel.setText("停车位信息录入");

        JLabel parkingNumLabel = new JLabel("车位号：", JLabel.RIGHT);
        JLabel ownerNameLabel = new JLabel("车主姓名：", JLabel.RIGHT);
        JLabel genderLabel = new JLabel("性别：", JLabel.RIGHT);
        JLabel ageLabel = new JLabel("年龄：", JLabel.RIGHT);
        JLabel carPlateLabel = new JLabel("车牌号：", JLabel.RIGHT);

        final JTextField parkingNumText = new JTextField(6);
        final JTextField ownerNameText = new JTextField(6);
        final JTextField genderText = new JTextField(6);
        final JTextField ageText = new JTextField