Swing 简明教程
SWING - Menu Classes
众所周知，每个顶级窗口都与它关联有一个菜单栏。此菜单栏由最终用户使用的各种菜单选项组成。此外，每个选项都包含一个称为下拉菜单的列表。菜单和 MenuItem 控件是 MenuComponent 类的子类。
As we know that every top-level window has a menu bar associated with it. This menu bar consists of various menu choices available to the end user. Further, each choice contains a list of options, which is called drop-down menus. Menu and MenuItem controls are subclass of MenuComponent class.
Menu Controls
Sr.No. |
Class & Description |
1 |
JMenuBarThe JMenuBar object is associated with the top-level window. |
2 |
JMenuItemThe items in the menu must belong to the JMenuItem or any of its subclass. |
3 |
JMenuThe JMenu object is a pull-down menu component which is displayed from the menu bar. |
4 |
JCheckboxMenuItemJCheckboxMenuItem is the subclass of JMenuItem. |
5 |
JRadioButtonMenuItemJRadioButtonMenuItem is the subclass of JMenuItem. |
6 |
JPopupMenuJPopupMenu can be dynamically popped up at a specified position within a component. |