代码如下:
String info;
  public void init()
    {
        URL url;
        URLConnection urlc;        resize(200,100);
        setBackground(Color.white);
        try{
         //建立站点连接
            url = new URL("http://localhost/file/sample.html");//连接出现问题???
            //可能是文件路径错误???如何选择文件路径??
            urlc = url.openConnection();
            urlc.connect();
            info = getInfo(urlc);
        }catch(MalformedURLException mfe){
            System.out.println("URL form error!");
        }catch(IOException ioe){
            System.out.println("IO1 Exception!");
        }
    }      public String getInfo(URLConnection urlc)
    { //读取文件信息
        String txt ="";
        InputStream is;
        int i;        try{
            is = urlc.getInputStream();//获取输入流
            i = is.read();
            while(i != -1){
                txt = txt + (char)i;
                i = is.read();
            }
            is.close();
        }catch(IOException ioe){
            System.out.println("IO2 Exception!");
            txt = new String("File read failed!");
        }        return txt;
    }  
   public void paint(Graphics g)
    { //显示到applet
        g.setColor(Color.red);
        g.drawString(info,50,50);
    }
我用eclipse做的,运行的时候报空字符串的异常,IO1 Exception!!是不是http://localhost/file/sample.html路径有错了,我的路径是f;/file/sample.html。它应该放在那???在线等,急啊!!