关于Java的两个类 Desktop和SystemTray

 
在JDK6中 ,AWT新增加了两个类:Desktop和SystemTray,前者可以用来打开系统默认浏览器浏览指定的URL,打开系统默认邮件客户端给指定的邮箱发邮件,用默认应用程序打开或编辑文件(比如,用记事本打开以txt为后缀名的文件),用系统默认的打印机打印文档;后者可以用来在系统托盘区创建一个托盘程序.下面代码演示了Desktop和SystemTray的用法.
/**
 *
 * @author chinajash
 */
public class DesktopTray {
    private static Desktop desktop;
    private static SystemTray st;
    private static PopupMenu pm;
    public static void main(String[] args) {
        if(Desktop.isDesktopSupported()){//判断当前平台是否支持Desktop类
            desktop = Desktop.getDesktop();
        }
        if(SystemTray.isSupported()){//判断当前平台是否支持系统托盘
            st = SystemTray.getSystemTray();
            Image image = Toolkit.getDefaultToolkit().getImage("netbeans.png");//定义托盘图标的图片           
            createPopupMenu();
            TrayIcon ti = new TrayIcon(image, "Desktop Demo Tray", pm);
            try {
                st.add(ti);
            } catch (AWTException ex) {
                ex.printStackTrace();
            }