HttpClient instance management

Dear All,


i'm just wondering when the DefaultHttpClient class should be  
instantiated.
I have a class providing basic HTTP services like sending JSON  
message, sending a get and parsing the response, etc. So this class  
has static methods.
I defined these members with these initializations:
private static HttpParams                  defaultParameters;
private static  SchemeRegistry              supportedSchemes;
private static  ClientConnectionManager     clcm;
static{
         setup();
         clcm = createManager();
     }

     private static final void setup() {
         supportedSchemes = new SchemeRegistry();
         SocketFactory sf = PlainSocketFactory.getSocketFactory();
         supportedSchemes.register(new Scheme("http", sf, 80));

         HttpParams params = new BasicHttpParams( );
         HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
         HttpProtocolParams.setUseExpectContinue(params, false);

         defaultParameters = params;

         context = new BasicHttpContext( );
     }

     private static final ClientConnectionManager createManager() {
         return new ThreadSafeClientConnManager( defaultParameters,  
supportedSchemes );
     }


May i define the HttpClient as a static field or i should define  
always a new instance when a service method is called? Like this:
public static Response get(String uri) {
         DefaultHttpClient httpClient = getHttpClient();
         HttpGet get = new HttpGet( serverURI + uri );
        ...
}



Thank you in advance!

Regards,

Imre





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