java - Applet - server communication, how can I can do it? -

i have applet , must send request web application data server in database. working objects , useful server responses me objects!!

how applet can communicate server?

i think web services method, rmi and... make me happy, best , reliable?

as long applet communicating server can use serialized object. need maintain same version of object class in both applet jar , on server. not open or expandable way go quick far development time , pretty solid.

here example.

instantiate connection servlet

url servleturl = new url("<url servlet>"); urlconnection servletconnect = servleturl.openconnection(); servletconnect.setdooutput(true); // allow write url servletconnect.setusecaches(false); // write message servlet , not browser's cache servletconnect.setrequestproperty("content-type","application/x-java-serialized-object"); 

get output stream , write object

mycustomobject myobject = new mycustomobject() objectoutputstream outputtoservlet; outputtoservlet = new objectoutputstream(servletconnection.getoutputstream()); outputtoservlet.writeobject(myobject); outputtoservlet.flush(); //cleanup outputtoservlet.close(); 

now read in response

objectinputstream in = new objectinputstream(servletconnection.getinputstream()); myrespobject myrespobj; try {     myrespobj= (myrespobject) in.readobject(); } catch (classnotfoundexception e1) {     e1.printstacktrace(); }  in.close(); 

in servlet

public void dopost(httpservletrequest request, httpservletresponse response) throws servletexception, ioexception {   myrespobject myrespobj= processsomething(request);   response.reset();   response.setheader("content-type", "application/x-java-serialized-object");   objectoutputstream outputtoapplet;   outputtoapplet = new objectoutputstream(response.getoutputstream());   outputtoapplet.writeobject(myrespobj);   outputtoapplet.flush();   outputtoapplet.close(); }  private myrespobject processsomething(httpservletrequest request) {   objectinputstream inputfromapplet = new objectinputstream(request.getinputstream());   mycustomobject myobject = (mycustomobject) inputfromapplet.readobject();   //do object passed   myrespobject myrespobj= new myrespobject();   return myrespobj; } 

just remember both objects passing need implement serializable

 public class mycustomobject implements java.io.serializable  {