Java Chat Room Simple version

Single Thread.

Server Side

1 Importjava.io.IOException;2 Importjava.net.*;3 ImportJava.io.*;4  Public classChatserver {5 6     7     8      Public Static voidMain (string[] args) {9         BooleanStarted=false;TenServerSocket ss=NULL;//Initialize OneSocket s=NULL; ADataInputStream dis=NULL; -         Try { -ss=NewServerSocket (8888);//Port number 8888,tcp the}Catch(bindexception e) { -System.out.println ("Port in use"); -System.exit (0); -}Catch(IOException e) { +E.printstacktrace ();//gives the method's calling program, until the exception is generated. -         } +         Try{ AStarted=true;//Connect on at              while(started) -             { -                 BooleanBconnected=false; -s=ss.accept (); -SYSTEM.OUT.PRINTLN ("A client connected!"); -Bconnected=true;//becomes true after receiving the other party indis=NewDataInputStream (S.getinputstream ()); -                  while(bconnected) {//there's something to attend. toString Str=dis.readutf ();//Block Type + System.out.println (str); -                 } the                 //dis.close (); *             } $}Catch(eofexception e) {Panax NotoginsengSystem.out.println ("Client closed!"); -         }  the         Catch(IOException e) { + e.printstacktrace (); A}finally{ the             Try{ +                 if(Dis! =NULL) Dis.close (); -                 if(s! =NULL) S.close (); $}Catch(IOException E1) { $ e1.printstacktrace (); -             } -         } the  -     }Wuyi  the}

Client

1 Importjava.awt.*;2 Importjava.awt.event.*;3 Importjava.io.IOException;4 Importjava.net.*;5 ImportJava.io.*;6  Public classChatClientextendsframe{7     8Socket s=NULL;9DataOutputStream dos=NULL;Ten      OneTextField tftxt=NewTextField ();//only one line can be written, there is an action ATextArea tacontent=NewTextArea ();//tags define multiple lines of text input controls -      -  the      Public Static voidMain (string[] args) { -         Newchatclient ().   Launchframe ();  -     } -      +      Public voidLaunchframe () -     { +SetLocation (400,300); A          This. SetSize (300,300); at Add (tftxt,borderlayout.south); - Add (Tacontent,borderlayout.north); - pack (); -          This. Addwindowlistener (NewWindowadapter () {//Close Window -  - @Override in              Public voidwindowclosing (windowevent e) { - disconnect (); toSystem.exit (0); +             } -              the});//Anonymous Class *Tftxt.addactionlistener (NewTflistener ()); $SetVisible (true);Panax Notoginseng Connect (); -     } the      +      Public voidConnect () A     { the         Try { +s=NewSocket ("127.0.0.1", 8888); -dos=NewDataOutputStream (S.getoutputstream ()); $System.out.println ("connected!"); $}Catch(unknownhostexception e) { - e.printstacktrace (); -}Catch(IOException e) { the e.printstacktrace (); -         }Wuyi          the     } -      Wu      Public voidDisconnect ()//Close Method -     { About         Try{ $ dos.close (); - S.close ();  -}Catch(IOException e) { - e.printstacktrace (); A         } +          the  -     } $     Private classTflistenerImplementsActionListener the     { the          Public voidactionperformed (ActionEvent e) {//One hit Enter theString str=tftxt.gettext (). Trim (); the Tacontent.settext (str); -Tftxt.settext ("");//empty after carriage return in             Try { the                 //dataoutputstream dos=new DataOutputStream (S.getoutputstream ()); theDos.writeutf (str);//output the stream. About Dos.flush (); the                 //dos.close (); the}Catch(IOException E1) { the e1.printstacktrace (); +             } -              the             Bayi         } the          the}//Inner class -}

Java Chat Room Simple version