Http Get and Post method exceptions in android?

I am using Http get and post methods for Http Connection I just wanted to ask that what all exception can occur in using them. I know list may be too long but can someone tell me the general and frequent exceptions that occur and must be handled? my code is :

public class httpconnection
    {

    HttpClient client=new DefaultHttpClient();
      InputStream in=null;


    public InputStream httprepon开发者_运维知识库se_post(String url,List<NameValuePair> params)
     {
      try {

    HttpPost post = new HttpPost(url); 
        UrlEncodedFormEntity ent = new UrlEncodedFormEntity(params,HTTP.UTF_8);
        post.setEntity(ent);
        HttpResponse responsePOST = client.execute(post);  
        HttpEntity resEntity = responsePOST.getEntity();  
        in=resEntity.getContent();
        in.close();

} catch (ClientProtocolException e)
 {
 Log. e ("Client Protocol Exception", e.toString ());
 }
 catch (IOException e) {
 Log. e ("Input Output Exception", e.toString ());
  }
  return in;
    }



 public InputStream httpreponse_get(String url)
  {
     try 
    {


  //String getURL = "http://www.google.com";
 HttpGet get = new HttpGet(url);
 HttpResponse responseGet = client.execute(get);
 HttpEntity resEntityGet = responseGet.getEntity();
     in=resEntityGet.getContent();
     in.close();
 } 

 catch (IOException e) {
 Log. e ("Input Output Exception", e.toString ());
  }
  return in;
        }
     }

Here's a few exception that you should at least include them in your code:

catch (UnsupportedEncodingException e)  //POST section
catch (NullPointerException e) //POST & GET section
catch (ClientProtocolException e)  //POST section
catch (IOException e) // POST & GET section

And if you need to make sure to catch any other exceptions that might occur besides mentioned above, just add the general exception on the last catch statement. That should get your code covered.

catch (Exception e)