Sending multiple strings over same TCP connection in Java? -

i have been trying hours , can't seem done. want send 2 strings tcp client server, , return them both capitalized. 2 strings username , password: client code is:

public void actionperformed(actionevent e) {             final string s1 =textpane.gettext();  //retrieve username             final string s2=passwordfield.gettext();//retrieve password                      //**************************************************************************             //after have gotten credentials, have send them server check in database             socket clientsocket = null; //create new socket             string response=null; //create supposed become server's response             string response2=null;             try {                 /**                  * construct client socket, specify ip address here                  * localhost loopback device , port number @                  * connection needs initialized.                  */                 clientsocket = new socket("localhost", 6789);                 // these streams same purpose in server side //                 dataoutputstream outtoserver = new dataoutputstream(clientsocket                         .getoutputstream());                 dataoutputstream outtoserver2 = new dataoutputstream(clientsocket                         .getoutputstream());                  bufferedreader infromserver = new bufferedreader(                         new inputstreamreader(clientsocket.getinputstream()));                 // read user's input console. //                  // send sentence server: note need append                 // endline character //                 outtoserver.writebytes(s1 + '\n'); //send username                 outtoserver.writebytes(s2 + '\n'); //send password                 // listen on socket , read reply of server //                 response2=infromserver.readline();                 response = infromserver.readline();              } catch (unknownhostexception ex) {// catch exceptions //                 ex.printstacktrace();             } catch (ioexception ex) {                 ex.printstacktrace();             }             system.out.println("from server: " + response); //print response of server             system.out.println("from server: " + response2);             try {                 // close socket when done //                 clientsocket.close();             } catch (ioexception ex) {                 ex.printstacktrace();             }          }     }); 

bulk of server code is:

  while(true) {         // connection socket //         socket connectionsocket;         try {             // accept connection on connection socket welcome socket server socket //             connectionsocket = welcomesocket.accept();             // input stream connection socket , save in buffer //             bufferedreader infromclient = new bufferedreader(new inputstreamreader(connectionsocket.getinputstream()));             // allocate output stream send data client //             dataoutputstream  outtoclient = new dataoutputstream(connectionsocket.getoutputstream());             // read client sentence receive buffer //             clientsentence = infromclient.readline();             clientsentence2=infromclient.readline();              system.out.println("from user: " + clientsentence);             // capitalize client's sentence, here server actions on client's data //             capitalizedsentence = clientsentence.touppercase() + '\n';            capitalizedsentence2=clientsentence2.touppercase()+'\n';              if(clientsentence.equalsignorecase("quit")){// close socket if server sends quit message //                connectionsocket.close();                system.out.println("connection socket quitting");                // note here server not exit or end close connection client //             }              else outtoclient.writebytes(capitalizedsentence);// send capitalized sentence client //         } catch (ioexception ex) {             ex.printstacktrace();         }      } 

what doing wrong? can't 1 buffered reader accept 2 separate strings? how separate them later?

you haven't written capitalizedsentence2 client that's why client waiting @ second readline() mentioned below:

        response2 = infromserver.readline();         response = infromserver.readline(); 

put below line in server side code in else part

 outtoclient.writebytes(capitalizedsentence2); 

it might solve problem.