HTMLUnit proxy?

 try{  // Open the file that is the first 
  // command line parameter
  FileInputStream fstream = new FileInputStream("textfile.txt");
  // Get the object of DataInputStream
  DataInputStream in = new DataInputStream(fstream);
  BufferedReader br = new BufferedReader(new InputStreamReader(in));
  String strLine;
  //Read File Line By Line
  while ((strLine = br.readLine()) != null)   {
         
       ProxyConfig pc=new ProxyConfig();
            pc.setProxyHost(strLine);
            pc.setProxyPort(3128);
            webClient.setProxyConfig(pc);
            
            System.out.println(strLine);
            HtmlPage currentPage = webClient.getPage("site");
        //   


           // webClient.waitForBackgroundJavaScript(30000);
            //System.out.println(currentPage.asText());
  //System.out.println (strLine);
  }
  //Close the input stream
  in.close();
    }catch (Exception e){//Catch exception if any
  System.err.println("Error: " + e.getMessage());
  }

try{  // Open the file that is the first 
  // command line parameter
  FileInputStream fstream = new FileInputStream("textfile.txt");
  // Get the object of DataInputStream
  DataInputStream in = new DataInputStream(fstream);
  BufferedReader br = new BufferedReader(new InputStreamReader(in));
  String strLine;
  //Read File Line By Line
  while ((strLine = br.readLine()) != null)   {
         
try {
       ProxyConfig pc=new ProxyConfig();
            pc.setProxyHost(strLine);
            pc.setProxyPort(3128);
            webClient.setProxyConfig(pc);
} catch (Exception ex) {
//do something System.out.println("That proxy doesn't work") or
// continue statement to skip to another line in file
}
            
            System.out.println(strLine);
            HtmlPage currentPage = webClient.getPage("site");
        //   


           // webClient.waitForBackgroundJavaScript(30000);
            //System.out.println(currentPage.asText());
  //System.out.println (strLine);
  }
  //Close the input stream
  in.close();
    }catch (Exception e){//Catch exception if any
  System.err.println("Error: " + e.getMessage());
  }