public class text_BJ extends Panel {?private Panel panel1 = new Panel();?private Panel panel2 = new Panel();?public void text_BJ() {????Checkbox checkbox1, checkbox2;??CheckboxGroup a = new CheckboxGroup();??checkbox1 = new Checkbox("普通", true, a);??checkbox2 = new Checkbox("障礙", false, a);????TextField textField1;??textField1 = new TextField(10);????panel1.setLayout(new GridLayout(1, 2));??panel1.add(new Label("請輸入用戶名："));??panel1.add(textField1);??panel2.setLayout(new GridLayout(1, 3));??panel2.add(new Label("請選擇游戲模式："));??panel2.add(checkbox1);??panel2.add(checkbox2);??setLayout(new GridBagLayout());??GridBagConstraints c = new GridBagConstraints();??c.gridx = 0;??c.gridy = 0;??add(panel1, c);??c.gridy = 1;??add(panel2, c);?}?public static void main(String[] args) throws InterruptedException {??Frame frame = new Frame("德瑪西亞");??frame.add(new text_BJ());??frame.pack();??frame.setVisible(true);??frame.addWindowListener(new WindowAdapter() {???public void windowClosing(WindowEvent e) {????System.exit(0);???}??});?}}