The applet currently does not have a dialog function, only the most basic login, the function of displaying the chat record
Login interface
Import Javax.swing.JFrame;
Import Javax.swing.JLabel;
Import Javax.swing.JButton;
Import Javax.swing.JTextField;
Import Javax.swing.JPasswordField;
Import Javax.swing.JPanel;
Import Java.awt.GridLayout;
Import Java.awt.BorderLayout;
Import Java.awt.FlowLayout;
public class Qqlogin extends jframe{
Private JLabel Labuser; User tags
Private JLabel Labpass; Password tags
Private JTextField Txtuser; User Information Entry Box
Private JPasswordField Txtpass; User Password entry box
Private JButton Btnreg; Register button
Private JButton Btnlogin; Login button
Private JButton Btncancel; Cancel button
Private JPanel Jpcenter; Central layout
Private JPanel Jpsouth; Southern Layout
Public Qqlogin () {
Init ();
This.setsize (250,125);
This.setresizable (FALSE);
This.setdefaultcloseoperation (Jframe.exit_on_close);
This.setlocation (300,100);
}
Interface layout
public void init () {
User tags and password tags
Labuser=new JLabel ("user");
Labpass=new JLabel ("password");
User and Password entry boxes
Txtuser=new JTextField ();
Txtpass=new JPasswordField ();
Button
Btnreg=new JButton ("registration");
Btnlogin=new JButton ("login");
Btncancel=new JButton ("Cancel");
Central layout
Jpcenter=new JPanel ();
Jpcenter.setlayout (New GridLayout (2,2));
Jpcenter.add (Labuser);
Jpcenter.add (Txtuser);
Jpcenter.add (Labpass);
Jpcenter.add (Txtpass);
This.add (Jpcenter,borderlayout.center);
Southern Layout
Jpsouth=new JPanel ();
Jpsouth.setlayout (New FlowLayout ());
Jpsouth.add (Btnreg);
Jpsouth.add (Btnlogin);
Jpsouth.add (Btncancel);
This.add (Jpsouth,borderlayout.south);
}
public static void Main (string[] args) {
Qqlogin login=new Qqlogin ();
Login.setvisible (TRUE);
}
} //Registration Interface Import Javax.swing.jframe;import Javax.swing.jlabel;import javax.swing.jbutton;import Javax.swing.joptionpane;import Javax.swing.jtextfield;import Javax.swing.jpasswordfield;import Javax.swing.JPanel ; Import Java.awt.borderlayout;import Java.awt.gridlayout;import Java.awt.event.actionlistener;import Java.awt.event.actionevent;import Java.io.file;import Java.io.filewriter;import Java.io.PrintWriter;public class Qqreg extends JFrame implements actionlistener{JLabel labmess;//Show registration label JLabel labuser;//user tag JLabel labpass;//password tag JT Extfield txtuser;//user input box jpasswordfield txtpass;//password input box JButton btnok;//confirm button JButton btncancel;//Cancel button JPanel Jpsouth; JPanel Jpcenter; Public Qqreg () {init (); This.setbounds (500,200,300,150); This.setresizable (FALSE); This.setdefaultcloseoperation (Jframe.exit_on_close); } public void Init () {//Instantiate all options labmess=new JLabel ("registration Information"); Labuser=new JLabel ("user"); Labpass=new JLabel ("password"); Txtuser=new JTextField (); TxtpaSs=new JPasswordField (); Btnok=new JButton ("confirmation"); Btnok.addactionlistener (this); Btncancel=new JButton ("Cancel"); Btncancel.addactionlistener (This); jpsouth=new JPanel (); Jpsouth.add (Btnok); Jpsouth.add (btncancel); jpcenter=new JPanel (); Jpcenter.setlayout (New GridLayout (2,2)); Jpcenter.add (Labuser); Jpcenter.add (Txtuser); Jpcenter.add (Labpass); Jpcenter.add (Txtpass); this.add (Labmess,borderlayout.north); This.add (Jpcenter,borderlayout.center); This.add (Jpsouth,borderlayout.south); } @Override public void actionperformed (ActionEvent e) {if (E.getactionco Mmand () = = "Confirm") {try{file Outfile=new file ("F:/java/qqsource.txt"); FileWriter fw=new FileWrite R (Outfile,true); PrintWriter pw=new PrintWriter (FW); String User=txtuser.gettext (); String Pass=new string (Txtpass.getpassword ()); if (! ( User.equals ("") &&pass.equals (""))) {Pw.println (user+ "%" +pass); Pw.flush (); This.setvisible (FALSE); }}catch (Exception E1) {e1.printstacktrace (); }} if (E.getactioncommand () = = "Cancel") {Txtuser.settext (""); Txtpass.settext (""); }}//public static void Main (string[] args) {//Qqreg r=new Qqreg ();//R.setvisible (TRUE);//}}//Chat interface Import javax . swing. Jframe;import Java.awt.event.actionevent;import Java.awt.event.actionlistener;import Javax.swing.JScrollPane; Import Javax.swing.jpanel;import javax.swing.jbutton;import javax.swing.jtextarea;import Javax.swing.JComboBox; Import Java.awt.gridlayout;import java.awt.borderlayout;import java.awt.event.actionlistener;import java.io.File; Import Java.io.filewriter;import Java.io.printwriter;public class Qqmain extends JFrame implements actionlistener{ Private JTextArea txtsend;//Send message window private JTextArea txtmess;//display Information window private JButton btnsend;//send button go to private JButton btncancel;//Cancel button Private JButton btnmess;//display message button pRivate JComboBox jblist;//Displays the drop-down list of chat objects private JPanel jpsmall; Private JPanel Jpbig; private int score=0; Private Qqchat chat; Public Qqmain () {init (); Chat=new Qqchat (); This.setbounds (300,100,300,400); This.setdefaultcloseoperation (Jframe.exit_on_close); This.setresizable (FALSE); }//Interface layout button public void init () {txtsend=new jtextarea (); Txtmess=new JTextArea (10,10); Txtmess.seteditable (False); btnsend=new JButton ("send"); Btnsend.addactionlistener (this); Btncancel=new JButton ("Cancel"); Btnmess=new JButton ("Chat history"); Btnmess.addactionlistener (this); Jblist=new JComboBox (); jpsmall=new JPanel (); Jpsmall.add (jblist); Jpsmall.add (Btnsend); Jpsmall.add (Btncancel); Jpsmall.add (btnmess); jpbig=new JPanel (); Jpbig.setlayout (New BorderLayout ()); Jpbig.add (Jpsmall,borderlayout.north); Jpbig.add (Txtsend,borderlayout.center); this.setlayout (New GridLayout (2,1)); This.add (txtmess); This.add (JPBIG); } @Override public void actionperformed (ActionEvent e) {if (E.getactioncommand (). Equals ("send")) {if (!txtsend.get Text (). Equals ("")) {writechat (); Txtmess.append (Txtsend.gettext () + "\ n"); Chat.getarea (). Append (Txtsend.gettext () + "\ n"); Txtsend.settext (""); }} if (E.getactioncommand (). Equals ("Chat history")) {score++; if (score%2==1) {chat.setvisible (true); }else{chat.setvisible (FALSE); }}} public void Writechat () {try{file Chat=new file ("F:/java/chat.txt"); FileWriter fw=new file Writer (chat,true); PrintWriter pw=new PrintWriter (FW); String S=txtsend.gettext (); Pw.println (s); Pw.flush (); }catch (Exception e) {e.printstacktrace (); }}//public static void Main (string[] args) {//Qqmain main=new qqmain ();//Main.setvisible (TRUE);//}}//Chat record interface
Package Qq1;import Javax.swing.jframe;import javax.swing.jtextarea;import java.io.file;import java.io.FileReader; Import Java.io.bufferedreader;public class Qqchat extends jframe{private JTextArea areamess; Public Qqchat () {areamess=new jtextarea (); Areamess.seteditable (FALSE); Chatfile (); This.add (areamess); This.setresizable (FALSE); This.setdefaultcloseoperation (Jframe.exit_on_close); This.setbounds (620,100,300,400);; } public JTextArea Getarea () {return areamess; } public void Chatfile () {try{file Chat=new file ("F:/java/chat.txt"); FileReader fr=new FileReader (chat); bufferedreader br=new BufferedReader (FR); StringBuffer s=new Str Ingbuffer (); while (Br.ready ()) {S.append (Br.readline () + "\ n"); } areamess.settext (S.tostring ()); }catch (Exception e) {e.printstacktrace (); }}//public static void Main (string[] args) {//Qqchat chat=new qqchat ();//chat.setvisible (TRUE);//}}
Implementing a simple chat applet in Java
