java - Making Instant Messaging Program, Running Incorrectly? -

i running server ensure works. when run servertest.java, "closing connections in textarea", expected have "waiting connect..." within textfield. tell me, problem is?

servertest.java

import javax.swing.jframe;  public class servertest {      public static void main(string[] args){         server spirit = new server();         spirit.setdefaultcloseoperation(jframe.exit_on_close);         spirit.startrunning();     } } 

server.java

import java.io.*; import java.net.*; import java.awt.*; import java.awt.event.*; import javax.swing.*;   public class server extends jframe {  private jtextfield usertext; private jtextarea chatwindow; private objectoutputstream output; private objectinputstream input; private serversocket server; private socket connection;  //server constructor public server(){     super("sim");     usertext = new jtextfield();     usertext.seteditable(false);     usertext.addactionlistener(             new actionlistener(){                 public void actionperformed(actionevent event){                     sendmessage(event.getactioncommand());                     usertext.settext("");                 }             }             );     add(usertext, borderlayout.north);     chatwindow = new jtextarea();     add(new jscrollpane(chatwindow));     setsize(300,150);     setvisible(true);  }  public void startrunning(){     try{         server = new serversocket (6798, 100); // parameters port , backlog         while(true){             try{                 waitforconnection();//waits connection                 setupstreams(); //sets connection                 whilechatting();//once connected, sends message between each other             }catch(eofexception eofexception){                               showmessage("\n server ended connection!"); //once streams been closed server             }finally{                 closecrap();             }         }     }catch(ioexception ioexception){         ioexception.printstacktrace();     }   }  //connection waiting  private void waitforconnection() throws ioexception{     showmessage("waiting connect... \n");     connection = server.accept(); //listens connection made socket , accepts     showmessage("connected to" + connection+getinetaddress().gethostname() + " \n"); //dispays ip of connected     }  //exchange data private void setupstreams() throws ioexception{     output = new objectoutputstream(connection.getoutputstream());     output.flush(); //flushes stream     input = new objectinputstream(connection.getinputstream());     showmessage("\n streams accepted \n"); }  //initiates chat private void whilechatting() throws ioexception {     string message = "you connected";     sendmessage(message);     abletotype(true); //allows user type     do{         try{             message = (string) input.readobject();             showmessage("\n"+ message); //sent messages         }catch(classnotfoundexception classnotfoundexception){ //if odd sent i.e string not sent             showmessage("\n unknown message sent! \n");          }     }while(!message.equals("client - end")); }  //closes program private void closecrap(){     showmessage("\n closing connections... \n");     abletotype(false);     try{         output.close(); //closes connection client         input.close(); //closes connection client         connection.close(); //closes socket     }catch(ioexception ioexception){         ioexception.printstacktrace();     } }  //send message client private void sendmessage(string message){     try{         output.writeobject("admin/server -  " + message);         output.flush();         showmessage("\nadmin/server -  " + message);     }catch(ioexception ioexception){         chatwindow.append("\n message not sent \n");     }  }  //update chatwindow private void showmessage(final string text){     swingutilities.invokelater( //creates thread update gui             new runnable(){                 public void run(){                     chatwindow.append(text); //adds end of chattwindow                 }             }             ); }  //to type private void abletotype(final boolean tof){     swingutilities.invokelater( //creates thread update gui             new runnable(){                 public void run(){                      usertext.seteditable(tof); //updates gui, allow type                 }             }             ); }  } 

i have been following thenewboston tutorials.

my error waitforconnection() constructor

private void waitforconnection() throws ioexception{     showmessage("waiting connect... \n");     connection = server.accept(); //listens connection made socket , accepts     showmessage("connected to" + connection+getinetaddress().gethostname() + " \n"); //dispays ip of connected     } 

on line 4 should "." not "+"

+ connection.getinetaddress().gethostname() +

it typing error.