Thread visitBaiduThread = new Thread(new VisitWebRunnable()); 
   visitBaiduThread.start(); 
   try { 
       visitBaiduThread.join(); 
  
          System.out.println("xiancheng======");
     
   } catch (InterruptedException e) { 
       // TODO Auto-generated catch block  
       e.printStackTrace(); 
   } 

----------------------

class VisitWebRunnable implements Runnable{ 
      
        @Override 
        public void run() { 
            // TODO Auto-generated method stub  
            String data = http://www.mamicode.com/getURLResponse("http://www.bjtime.cn");
           String resultStr = data;
           System.out.println("ddddd----"+resultStr);
        } 
        private String getURLResponse(String urlString){ 
            HttpURLConnection conn = null; //连接对象  
            InputStream is = null; 
              resultDatahttp://www.mamicode.com/= ""; 
            try { 
                URL url = new URL(urlString); //URL对象  
                conn = (HttpURLConnection)url.openConnection(); //使用URL打开一个链接  
                conn.setDoInput(true); //允许输入流，即允许下载  
                conn.setDoOutput(true); //允许输出流，即允许上传  
                conn.setUseCaches(false); //不使用缓冲  
                conn.setRequestMethod("GET"); //使用get请求  
                is = conn.getInputStream();   //获取输入流，此时才真正建立链接  
                InputStreamReader isr = new InputStreamReader(is); 
                BufferedReader bufferReader = new BufferedReader(isr); 
                String inputLine  = ""; 
                while((inputLine = bufferReader.readLine()) != null){ 
                    resultData += inputLine + "\n"; 
                } 
     
            } catch (MalformedURLException e) { 
                // TODO Auto-generated catch block  
                e.printStackTrace(); 
            }catch (IOException e) { 
                // TODO Auto-generated catch block  
                e.printStackTrace(); 
            }finally{ 
                if(is != null){ 
                    try { 
                        is.close(); 
                    } catch (IOException e) { 
                        // TODO Auto-generated catch block  
                        e.printStackTrace(); 
                    } 
                } 
                if(conn != null){ 
                    conn.disconnect(); 
                } 
            } 
     
            return resultData; 
        }