所以这是我的问题：
我想创建一个新面板，要求用户输入银行帐户信息（帐户名称和帐号），当用户单击登录按钮时，它将面板更改为提款/存款面板，并显示您的帐户名称在顶部。我已经完成了提款/存款面板，但是对于如何创建信息面板并使其出现在提款/存款面板等之前感到困惑。
这是我的代码：
public class MyFrame extends JFrame {
private JPanel panel;
private JLabel wordsLabel;
private JLabel balanceLabel;
private JLabel choiceLabel;
private JTextField transactionAmount;
private JRadioButton depositButton;
private JRadioButton withdrawButton;
private double balance;
public MyFrame() {
final int FIELD_WIDTH = 5;
balance = 500;
panel = new JPanel();
wordsLabel = new JLabel();
balanceLabel = new JLabel();
choiceLabel = new JLabel();
transactionAmount = new JTextField(FIELD_WIDTH);
JPanel buttonPanel = new JPanel();
ButtonGroup myGroup = new ButtonGroup();
depositButton = new JRadioButton("Deposit");
withdrawButton = new JRadioButton("Withdraw");
transactionAmount.setText("0");
wordsLabel.setText("Welcome to Wes Banco! Your current balance is: ");
balanceLabel.setText(String.format("%10.2f", balance));
choiceLabel.setText("How much would you like to deposit/withdraw? ");
panel.setLayout(new GridLayout(4, 4, 5, 10));
panel.add(wordsLabel);
panel.add(balanceLabel);
panel.add(choiceLabel);
panel.add(transactionAmount);
myGroup.add(depositButton);
myGroup.add(withdrawButton);
buttonPanel.add(depositButton);
buttonPanel.add(withdrawButton);
ButtonListener myListener = new ButtonListener();
depositButton.addActionListener(myListener);
withdrawButton.addActionListener(myListener);
panel.add(buttonPanel);
this.add(panel);
}
class ButtonListener implements ActionListener {
@Override
public void actionPerformed(ActionEvent event) {
double amount = Double.parseDouble(transactionAmount.getText());
if (amount == 0) {
JOptionPane.showMessageDialog(null,
"You cannot deposit or withdraw nothing!");
JOptionPane.showMessageDialog(null,
"Please enter a valid amount.");
} else {
if (event.getSource() == depositButton) {
JOptionPane.showMessageDialog(null,
"You have deposited: " + amount);
balance += amount;
} else if (event.getSource() == withdrawButton) {
if (balance < amount) {
JOptionPane.showMessageDialog(null,
"You do not have sufficient funds to complete this transaction.");
JOptionPane.showMessageDialog(null,
"Please enter a valid amount.");
} else {
JOptionPane.showMessageDialog(null,
"You have withdrawn: " + amount);
balance -= amount;
}
}
balanceLabel.setText(String.valueOf(balance));
}
}
}
}