Java Chat Room Code

Chat Room Interface:

Source:

 Public  class clientframe extends Frame {    PrivateTextField textfieldcontent =NewTextField ();PrivateTextArea textareacontent =NewTextArea ();PrivateSocket socket =NULL;PrivateOutputStream out =NULL;PrivateDataOutputStream dos =NULL;PrivateInputStream in =NULL;PrivateDataInputStream dis =NULL;Private BooleanFlag =false;/** * School: Shandong Normal University programmer: External Force _victor Date: May 8, 2016 9:19:51 function: Start the client program * * @param args */     Public Static void Main(string[] args) {NewClientframe (). Init (); }/** * School: Shandong Normal University programmer: External Force _victor Date: May 8, 2016 9:20:43 function: Initialize the window */    Private void Init() { This. SetSize ( -, -); SetLocation ( -, Max); SetVisible (true); Settitle ("Wechatroom");//Add control         This. Add (Textareacontent); This. Add (Textfieldcontent, Borderlayout.south); Textareacontent.setfocusable (false); Pack ();//Close eventAddwindowlistener (NewWindowadapter () { Public void windowclosing(WindowEvent e) {System.out.println ("The user tried to close the window");                Disconnect (); System.exit (0); }        });//textfieldcontent Add carriage return eventTextfieldcontent.addactionlistener (NewActionListener () { Public void actionperformed(ActionEvent e)            {Onclickenter (); }        });//Establish connectionConnect ();NewThread (NewRecivemessage ()). Start (); }Private  class recivemessage implements Runnable {        @Override         Public void Run() {flag =true;Try{ while(flag)                    {String message = Dis.readutf (); Textareacontent.append (Message +"\ n"); }            }Catch(Eofexception e) {flag =false; System.out.println ("Client is down");//E.printstacktrace ();}Catch(SocketException e) {flag =false; System.out.println ("Client is down");//E.printstacktrace ();}Catch(IOException e) {flag =false; System.out.println ("Accept message Failed");            E.printstacktrace (); }        }    }/** * Function: When you click on the carriage return event School: Shandong Normal University programmer: External Force _victor Date: May 8, 2016 morning 9:49:30 * *    Private void Onclickenter() {String message = Textfieldcontent.gettext (). Trim ();if(Message! =NULL&&!message.equals ("")) {String time =NewSimpleDateFormat ("H:m:s"). Format (NewDate ()); Textareacontent.append (Time +"\ n"+ Message +"\ n"); Textfieldcontent.settext ("");        Sendmessagetoserver (message); }    }/** * Function: Send message to server school: Shandong Normal University programmer: External Force _victor Date: May 8, 2016 morning 10:13:48 * * @param Message * *    Private void Sendmessagetoserver(String message) {Try{DOS.WRITEUTF (message);        Dos.flush (); }Catch(IOException e) {System.out.println ("Send message Failed");        E.printstacktrace (); }    }/** * Function: Apply for Socket link School: Shandong Normal University programmer: External Force _victor Date: May 8, 2016 morning 10:00:38 * *    Private void Connect() {Try{socket =NewSocket ("localhost",8888);            out = Socket.getoutputstream (); DOS =NewDataOutputStream (out);            in = Socket.getinputstream (); dis =NewDataInputStream (in); }Catch(Unknownhostexception e) {System.out.println ("Request link Failed");        E.printstacktrace (); }Catch(IOException e) {System.out.println ("Request link Failed");        E.printstacktrace (); }    }/** * Function: Close stream and link school: Shandong Normal University programmer: External Force _victor Date: May 8, 2016 morning 10:01:32 * *    Private void Disconnect() {flag =false;if(Dos! =NULL) {Try{Dos.close (); }Catch(IOException e) {System.out.println ("DOS shutdown failed");            E.printstacktrace (); }        }if(Out! =NULL) {Try{Out.close (); }Catch(IOException e) {System.out.println ("DOS shutdown failed");            E.printstacktrace (); }        }if(Socket! =NULL) {Try{Socket.close (); }Catch(IOException e) {System.out.println ("Socket shutdown failed");            E.printstacktrace ();        }            ; }    }}

 PackageCom.chat;ImportJava.io.DataInputStream;ImportJava.io.DataOutputStream;ImportJava.io.EOFException;ImportJava.io.IOException;ImportJava.io.InputStream;ImportJava.io.OutputStream;ImportJava.net.BindException;ImportJava.net.ServerSocket;ImportJava.net.Socket;ImportJava.net.SocketException;ImportJava.util.ArrayList;ImportJava.util.List; Public  class chatserver {    Privatelist<client> clients =NewArraylist<> ();/** * Function: Start chatsever School: Shandong Normal University programmer: External Force _victor Date: May 8, 2016 morning 10:26:41 * * @param args */     Public Static void Main(string[] args) {NewChatserver (). Init (); }/** * Function: To Chatserver initialization school: Shandong Normal University programmer: External Force _victor Date: May 8, 2016 morning 10:27:09 * *    Private void Init() {System.out.println ("Server is turned on");//BindexceptionServerSocket SS =NULL; Socket socket =NULL;Try{SS =NewServerSocket (8888); }Catch(Bindexception e) {System.out.println ("Port is already occupied");        E.printstacktrace (); }Catch(IOException E1)        {E1.printstacktrace (); }Try{Client Client =NULL; while(true) {socket = ss.accept (); System.out.println ("Customer Arrivals"); Client =NewClient (socket); Clients.add (client);NewThread (client). Start (); }        }Catch(IOException e)        {E.printstacktrace (); }    }Private  class Client implements Runnable {        PrivateSocket socket =NULL; InputStream in =NULL; DataInputStream din =NULL; OutputStream out =NULL; DataOutputStream dos =NULL;BooleanFlag =true; Public Client(Socket socket) { This. socket = socket;Try{in = Socket.getinputstream (); DIN =NewDataInputStream (in); }Catch(IOException e) {System.out.println ("Accept message Failed");            E.printstacktrace (); }        } Public void Run() {String message;Try{ while(flag) {message = Din.readutf ();//SYSTEM.OUT.PRINTLN ("Customer said:" + message);forwordtoallclients (message); }            }Catch(SocketException e) {flag =false; System.out.println ("Customer Downline"); Clients.remove ( This);//E.printstacktrace ();}Catch(Eofexception e) {flag =false; System.out.println ("Customer Downline"); Clients.remove ( This);//E.printstacktrace ();}Catch(IOException e) {flag =false; System.out.println ("Accept message Failed"); Clients.remove ( This);            E.printstacktrace (); }if(DIN! =NULL) {Try{Din.close (); }Catch(IOException e) {System.out.println ("din shutdown failed");                E.printstacktrace (); }            }if(In! =NULL) {Try{In.close (); }Catch(IOException e) {System.out.println ("din shutdown failed");                E.printstacktrace (); }            }if(Socket! =NULL) {Try{Socket.close (); }Catch(IOException e) {System.out.println ("din shutdown failed");                E.printstacktrace (); }            }        }/** * Function: forward to all clients school: Shandong Normal University programmer: External Force _victor Date: May 8, 2016 morning 11:11:59 * * @param Message * @throws ioexception * *        Private void forwordtoallclients(String message)throwsIOException { for(Client c:clients) {if(c! = This) {out = C.socket.getoutputstream (); DOS =NewDataOutputStream (out);                Forwordtoclient (message); }            }        }/** * Function: Send to a client school: Shandong Normal University programmer: External Force _victor Date: May 8, 2016 morning 11:16:12 * * @throws ioexce ption * *        Private void forwordtoclient(String message)throwsIOException {DOS.WRITEUTF (message);            Dos.flush (); System.out.println ("forwarded successfully!" "); }    }}

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Java Chat Room Code