子菜单 Submenus 可以将一个菜单嵌入到另一个菜单中,嵌入的菜单就成为子菜 单.下列代码添加菜单项“Unⅸx,”^NT;”and“Win95”到子菜单 “ Software JMenu softwareHelpSubMent new JMenu("Software) JMenu hardwareHelpSubMenu new JMenu ("Hardware") helpMenu. add(softwareHelp SubMenu)i helpMenu. add(hardwareHelpSubMenu)i softwareHelpSubMenu. add (new JMenuItem("Unix ))i softwareHelpSubMenu. add (new JMenuItem(NT ) softwareHelpSubMenu. add (new JMenuItem("Win95)) 感 My Menu frame 回区 File Help Software Hardware NT Win95子菜单Submenus JMenu softwareHelpSubMenu = new JMenu("Software"); JMenu hardwareHelpSubMenu = new JMenu("Hardware"); helpMenu.add(softwareHelpSubMenu); helpMenu.add(hardwareHelpSubMenu); softwareHelpSubMenu.add(new JMenuItem("Unix")); softwareHelpSubMenu.add(new JMenuItem("NT")); softwareHelpSubMenu.add(new JMenuItem("Win95")); 可以将一个菜单嵌入到另一个菜单中，嵌入的菜单就成为子菜 单. 下列代码添加菜单项 “Unix, ” “NT, ” and “Win95” 到子菜单 “Software