我有一個JMenu,我想根據菜單上的按鈕來改變窗口的內容。我設法將面板顯示爲一個彈出窗口,但我希望它與菜單顯示在同一個窗口中。這是我到目前爲止的代碼:如何在Java Swing的相同窗口中顯示菜單和麪板?
public class GUImenu extends JFrame
{
private JMenuBar menuBar;
private JMenu menu;
private JMenu subMenu;
private JMenuItem item1;
private JMenuItem item2;
private JMenuItem item3;
private JMenuItem item4;
private JMenuItem item5;
private JMenuItem item6;
public GUImenu()
{
super("Example Menu System");// Call the JFrame constructor.
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // Specify an action for the close button.
buildMenuBar();
// Pack and display the window.
pack();
setSize(1000, 250); // set frame size
setVisible(true);
}
private void buildMenuBar()
{
// Create the menu bar.
menuBar = new JMenuBar();
// Create the file and text menus.
menu = new JMenu("Menu"); menuBar.add(menu);
subMenu = new JMenu("Create Customer");
item1 = new JMenuItem("Ordinary Customer"); subMenu.add(item1);
item1.addActionListener(new showOrdinaryCust());
item6 = new JMenuItem("Privileged Customer"); subMenu.add(item6);
menu.add(subMenu);
item2 = new JMenuItem("View Customers Who Didn't Pay"); menu.add(item2);
item3 = new JMenuItem("Remove Client");menu.add(item3);
item4 = new JMenuItem("Create Order"); menu.add(item4);
item5 = new JMenuItem("Search..."); menu.add(item5);
setJMenuBar(menuBar);
}
public static void main(String[] args)
{
new GUImenu();
}
private class showOrdinaryCust implements ActionListener
{
public void actionPerformed(ActionEvent event)
{
if(event.getSource()==item1)
GUIpanel.main(null);
}
}
}
+1,所需要的只是一個合適的佈局管理器,並且您找到了它。 – mre