当我尝试调整大小到我希望它占据的任何大小时，为什么我的 JPanel 会遍布框架的其余部分。. .
这是代码片段
public class GUITabbedPane extends JFrame{
TabsPanelClasses tabPanel = new TabsPanelClasses();
public GUITabbedPane()
{
TabsPanelClasses.CreateAccount createAccount = tabPanel.new CreateAccount();
TabsPanelClasses.BorrowBook borrowBook = tabPanel.new BorrowBook();
JTabbedPane tabs = new JTabbedPane(JTabbedPane.LEFT);
//Tab text support html tags
tabs.addTab("<html><body marginwidth=30 marginheight=20>Create Account</body></html>", null,createAccount.createAccountPanel(),"New Member Account");
tabs.addTab("<html><body marginwidth=30 marginheight=20>Borrow Book</body></html>", null,borrowBook.borrowBookInputs(),"Borrowing a book");
tabs.addTab("<html><body marginwidth=30 marginheight=20>Return Book</body></html>", null,null,"Returning a book");
tabs.addTab("<html><body marginwidth=30 marginheight=20>Add Book</body></html>", null,null,"Adding a book record");
tabs.addTab("<html><body marginwidth=30 marginheight=20>Delete Book</body></html>", null,null,"Deleting a book record");
tabs.addTab("<html><body marginwidth=30 marginheight=20>Display Details</body></html>", null,null,"Books and Members details");
add(tabs);
pack();
}
public static void main(String[] args) {
GUITabbedPane frame = new GUITabbedPane();
frame.setDefaultLookAndFeelDecorated(true);
frame.setSize(800, 400);
frame.setLocationRelativeTo(null);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
}
createAccount() 返回我在框架中显示的面板。. .
public class TabsPanelClasses {
class CreateAccount
{
JLabel label = new JLabel("Applicants` name : ");
JTextField textField = new JTextField("New members` name here");
JLabel label1 = new JLabel("Subscription fee ");
JRadioButton radioButton1 = new JRadioButton("$25");
JRadioButton radioButton2 = new JRadioButton("$15");
ButtonGroup group = new ButtonGroup();
JButton btn = new JButton("Create Account");
public JPanel createAccountPanel()
{
JPanel panel = new JPanel(new GridLayout(3,2));
panel.setBorder(new TitledBorder("Create Account"));
panel.add(label);
panel.add(textField);
panel.add(label1);
group.add(radioButton1);
group.add(radioButton2);
panel.add(radioButton1);
panel.add(radioButton2);
panel.add(btn);
panel.setVisible(false);
panel.setSize(new Dimension(50,50));
panel.revalidate();
panel.repaint();
return panel;
}
}
}