Sending an object through a socket in java -


i have 2 java netbeans projects, 1 server other client. have message class have created want pass server , other way client after modification done @ server. have included class message in both projects. use objectoutputstream , objectinputstream pass object. connection between server , client ok , object passes through @ server when read object objectinputstream using readobject() method type cast message class. classnotfoundexception thrown @ server. cant find message class. how can resolve this?

code client:

public void startclient() {     try {         // create socket         socket clientsocket = new socket(host, port);         // create input & output streams server         objectoutputstream outtoserver = new objectoutputstream(clientsocket.getoutputstream());         objectinputstream infromserver = new objectinputstream(clientsocket.getinputstream());          // read modify         // todo here          /* create message object send */         linkedlist<message> msglist = new linkedlist<>();         message msg = new message();         msg.setmessage("kasun");         msg.setindex(1);         msg.setaverage(5.5f);         msglist.push(msg);          /* send message object server */         outtoserver.writeobject(msglist);                      /* retrive message object server */         linkedlist<message> infromserverlist = new linkedlist<>();         message msgfrmserver = null;         infromserverlist = (linkedlist<message>)infromserver.readobject();         msgfrmserver = infromserverlist.pop();          /* print out recived message */         system.out.println("message: " + msgfrmserver.getmessage());         system.out.println("index: " + msgfrmserver.getindex());         system.out.println("average: " + msgfrmserver.getaverage());           clientsocket.close();      } catch (exception e) {         system.err.println("client error: " + e.getmessage());         system.err.println("localized: " + e.getlocalizedmessage());         system.err.println("stack trace: " + e.getstacktrace());     } }

code server

public void startserver() {      try {         serversocket welcomesocket = new serversocket(port);          while (true) {                 // create client socket             socket clientsocket = welcomesocket.accept();             system.out.println("socket extablished...");             // create input , output streams client             objectoutputstream outtoclient = new objectoutputstream(clientsocket.getoutputstream());             objectinputstream infromclient = new objectinputstream(clientsocket.getinputstream());              // read modify             // todo here              /* create message object , retrive information */             linkedlist<message> inlist = new linkedlist<>();             message inmsg = null;             inlist = (linkedlist<message>)infromclient.readobject();             inmsg = inlist.pop();              /* modify message object */             inmsg.setmessage(inmsg.getmessage().touppercase());             inmsg.setindex(5);             inmsg.setaverage(10.5f);              /* send modified message object */             outtoclient.writeobject(inmsg);                  }      } catch (exception e) {         system.err.println("server error: " + e.getmessage());         system.err.println("localized: " + e.getlocalizedmessage());         system.err.println("stack trace: " + e.getstacktrace());         system.err.println("to string: " + e.tostring());     } }

the exception thrown @ "server"

java.lang.classnotfoundexception: rusl.online.examination.system.client.utility.message

would have use java rmi? there solution without using rmi?

make sure message on server side rusl.online.examination.system.client.utility.message. seems not case.


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