[转]JDK1.6.0新特性详解与代码示例

JDK6.0发布有段时间了，新的JDK也有不少新的特性，我去网上搜集了一下，列在下面和大家一起学习．
１．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。

我随便找了几张图，在Tray里面都是空的，没有图,可能是图太大，有xdjm知道希望告诉我

import  java.awt.AWTException;
import  java.awt.Desktop;
import  java.awt.Image;
import  java.awt.MenuItem;
import  java.awt.PopupMenu;
import  java.awt.SystemTray;
import  java.awt.Toolkit;
import  java.awt.TrayIcon;
import  java.awt.event.ActionEvent;
import  java.awt.event.ActionListener;
import  java.io.File;
import  java.io.IOException;
import  java.net.URI;
import  java.net.URISyntaxException;

public   class  DesktopTrayTest  {
     private   static  Desktop desktop;
     private   static  SystemTray st;
     private   static  PopupMenu pm;
    
     public   static   void  main( String[] args )  {
         if ( Desktop.isDesktopSupported() )  {
            desktop  =  Desktop.getDesktop();
        }
         if ( SystemTray.isSupported() )  {
            st  =  SystemTray.getSystemTray();
            Image image  =  Toolkit.getDefaultToolkit().createImage(  " http://www.51ppt.com.cn/Article/Uploadphotos/200604/20064147333288.png "  );
            createPopupMenu();
            TrayIcon ti  =   new  TrayIcon( image,  " Demo " , pm );
             try {
                st.add( ti );
            }   catch ( AWTException awte )  {
                awte.printStackTrace();
            }
        }
    }
     public   static   void  sendMail( String mail )  {
         if ( desktop  !=   null   &&
            desktop.isSupported( Desktop.Action.MAIL ) )  {
             try   {
                desktop.mail(  new  URI( mail ) );
            }   catch  (IOException e)  {
                e.printStackTrace();
            }   catch  (URISyntaxException e)  {
                e.printStackTrace();
            }
        }
    }
     public   static   void  openBrowser( String url )  {
         if ( desktop  !=   null   &&
            desktop.isSupported( Desktop.Action.BROWSE ))  {
             try   {
                desktop.browse(  new  URI( url ) );
            }   catch  (IOException e)  {
                e.printStackTrace();
            }   catch  (URISyntaxException e)  {
                e.printStackTrace();
            }
        }
    }
     public   static   void  edit()  {
         if ( desktop  !=   null   &&
            desktop.isSupported( Desktop.Action.EDIT ) )  {
            File file  =   new  File(  " test.txt "  );
             try   {
                 if ( file.exists()  ==   false  )  {
                    file.createNewFile();
                }
                desktop.edit( file );
            }   catch ( IOException ioe )  {
                ioe.printStackTrace();
            }
        }
    }
     public   static   void  createPopupMenu()  {
        pm  =   new  PopupMenu();
        MenuItem ob  =   new  MenuItem(  " Open url "  );
        ob.addActionListener(  new  ActionListener()  {
             public   void  actionPerformed( ActionEvent ae )  {
                openBrowser(  " http://blog.youkuaiyun.com/xumingming64398966 "  );
            }
        } );
        MenuItem sm  =   new  MenuItem(  " Send Mail "  );
        sm.addActionListener(  new  ActionListener()  {
             public   void  actionPerformed( ActionEvent ae )  {
                sendMail(  " 64398966@qq.com "  );
            }
        } );
        MenuItem ed  =   new  MenuItem(  " Edit "  );
        ed.addActionListener(  new  ActionListener()  {
             public   void  actionPerformed( ActionEvent ae )  {
                edit();
            }
        } );
        MenuItem ex  =   new  MenuItem(  " Exit "  );
        ex.addActionListener(  new  ActionListener()