Yo yo, Java assembled chat room, the simplest implementation

Too yards and yards, always more feel ~ ~ ~

I've been playing for one hours.

But looking at one line of the line,

Still have a sense of accomplishment ~ ~:)

Verysimplechatserver.java

ImportJava.io.*;Importjava.net.*;ImportJava.util.*; Public classverysimplechatserver {ArrayList clientoutputstream;  Public classClientHandlerImplementsRunnable {BufferedReader reader;    Socket sock;  PublicClientHandler (Socket clientsocket) {Try{sock=Clientsocket; InputStreamReader Isreader=NewInputStreamReader (Sock.getinputstream ()); Reader=NewBufferedReader (Isreader); } Catch(Exception ex) {ex.printstacktrace (); }    }         Public voidrun () {String message; Try {             while(message = Reader.readline ())! =NULL) {System.out.println ("Read" +message);            Telleveryone (message); }        } Catch(Exception ex) {ex.printstacktrace (); }    }}     Public Static voidMain (string[] args) {//TODO auto-generated Method Stub        Newverysimplechatserver (). Go (); }     Public voidGo () {Clientoutputstream=NewArrayList (); Try{serversocket Serversock=NewServerSocket (5000);  while(true) {Socket Clientsocket=serversock.accept (); PrintWriter writer=NewPrintWriter (Clientsocket.getoutputstream ());                                Clientoutputstream.add (writer); Thread T=NewThread (NewClientHandler (Clientsocket));                T.start (); System.out.println ("Service at Port 5000 ..."); System.out.println ("Got a connection ..."); }        } Catch(Exception ex) {ex.printstacktrace (); }    }         Public voidtelleveryone (String message) {Iterator it=Clientoutputstream.iterator ();  while(It.hasnext ()) {Try{printwriter writer=(PrintWriter) it.next ();                WRITER.PRINTLN (message);            Writer.flush (); } Catch(Exception ex) {ex.printstacktrace (); }        }            }} 

Simplechatclient.java

ImportJava.io.*;Importjava.net.*;ImportJava.util.*;Importjavax.swing.*;Importjava.awt.*;Importjava.awt.event.*; Public classsimplechatclient {JTextArea incoming;    JTextField outgoing;    BufferedReader reader;    PrintWriter writer;    Socket sock;  Public Static voidMain (string[] args) {//TODO auto-generated Method StubSimplechatclient client =Newsimplechatclient ();    Client.go (); }     Public voidGo () {JFrame frame=NewJFrame ("Ludicrously simple Chat Client"); JPanel Mainpanel=NewJPanel (); Incoming=NewJTextArea (15, 30); Incoming.setlinewrap (true); Incoming.setwrapstyleword (true); Incoming.seteditable (false); JScrollPane Qscroller=NewJScrollPane (incoming);        Qscroller.setverticalscrollbarpolicy (scrollpaneconstants.vertical_scrollbar_always);        Qscroller.sethorizontalscrollbarpolicy (Scrollpaneconstants.horizontal_scrollbar_never); Outgoing=NewJTextField (20); JButton Sendbutton=NewJButton ("Send"); Sendbutton.addactionlistener (NewSendbuttonlistener ());        Mainpanel.add (Qscroller);        Mainpanel.add (outgoing);        Mainpanel.add (Sendbutton);                Setupnetworking (); Thread Readerthread=NewThread (NewIncomingreader ());                Readerthread.start ();        Frame.getcontentpane (). Add (Borderlayout.center, Mainpanel); Frame.setsize (400, 500); Frame.setvisible (true); }        Private voidsetupnetworking () {Try{sock=NewSocket ("127.0.0.1", 5000); InputStreamReader StreamReader=NewInputStreamReader (Sock.getinputstream ()); Reader=NewBufferedReader (StreamReader); Writer=NewPrintWriter (Sock.getoutputstream ()); System.out.println ("Networking established"); } Catch(IOException ex) {ex.printstacktrace (); }    }         Public classSendbuttonlistenerImplementsActionListener { Public voidactionperformed (ActionEvent ev) {Try{writer.println (Outgoing.gettext ());            Writer.flush (); } Catch(Exception ex) {ex.printstacktrace (); } outgoing.settext ("");        Outgoing.requestdefaultfocus (); }    }     Public classIncomingreaderImplementsRunnable { Public voidrun () {String message; Try {                 while(message = Reader.readline ())! =NULL) {System.out.println ("Read" +message); Incoming.append (Message+ "\ n"); }            } Catch(Exception ex) {ex.printstacktrace (); }        }    }}

Yo yo, Java assembled chat room, the simplest implementation