title: XML-RPC error while running client
body: <pre><code>Exception in thread "Thread-4" java.lang.InstantiationError: org.apache.xmlrpc.XmlRpcRequest
      at org.apache.xmlrpc.XmlRpcRequestProcessor.decodeRequest(XmlRpcRequestProcessor.java:82)
      at org.apache.xmlrpc.XmlRpcWorker.execute(XmlRpcWorker.java:143)
      at org.apache.xmlrpc.XmlRpcServer.execute(XmlRpcServer.java:139)
      at org.apache.xmlrpc.XmlRpcServer.execute(XmlRpcServer.java:125)
      at org.apache.xmlrpc.WebServer$Connection.run(WebServer.java:761)
      at org.apache.xmlrpc.WebServer$Runner.run(WebServer.java:642)
      at java.lang.Thread.run(Unknown Source)
  </code></pre>
  
  <p>This is the error I am getting when I run my client code on localhost in XML-RPC. I have made server and client in JAVA. my server process seems to be running ok. It is waiting for client requests successfully. </p>
  
  <p>Following is my code for client.</p>
  
  <pre><code>package rpcpkg;
  
  import java.net.URL;
  import java.util.Vector;
  
  import org.apache.xmlrpc.client.XmlRpcClient;
  import org.apache.xmlrpc.client.XmlRpcClientConfigImpl;
  
  public class SimpleXmlrpc {
  
      public SimpleXmlrpc() {
      }
  
      public static void main(String[] args) {
  
          XmlRpcClientConfigImpl config = new XmlRpcClientConfigImpl();
  
          try{
  
            config.setServerURL(new URL("http://localhost:8089/workspace3/JAVARPC/RPCSRC/rpcserverpkg/"));
  
              XmlRpcClient client = new XmlRpcClient();
              client.setConfig(config);
  
              Vector params = new Vector();
              params.addElement(new Integer(17));
              params.addElement(new Integer(13));
  
              Object result = client.execute("sample.sum", params);
  
              int sum = ((Integer) result).intValue();
              System.out.println("The sum is: "+ sum);
  
          }
          catch(Exception e)
          {
              System.out.println("Exception: " + e.getMessage());
      }
      }
  }
  </code></pre>