Java Notepad program __java

Import java.awt.*;
Import java.awt.event.*;
Import java.lang.string.*;
Import java.awt.datatransfer.*; Data transfer
Import java.util.*;

public class Notepad {
public static void Main (String args[]) {
Mymenuframe MF = new Mymenuframe (); Defining the main class
Mf.setsize (New Dimension (300, 200)); Specify the initial size of the window with the SetSize () method
Mf.setvisible (TRUE);
}
}

//Definition Window
Class Mymenuframe extends Frame implements ActionListener {
 clipboard Clipboard;   &nb sp;       //defines the Clipboard object
 filedialog filedialog_save, filedialog_load;     //Definition File dialog box
 menubar m_menubar;             //define menu bars
 menu menufile, Menuedit, Menustyle, Menusearch, Menuhelp;  //define menu Items
  MenuItem mi_file_new, Mi_file_open, Mi_file_save, Mi_file_savaas,
   mi_file_close, Mi_File_Exit, Mi_edit_ce, Mi_edit_copy, Mi_edit_cut,
   mi_edit_paste, Mi_edit_style, Mi_Style_Font, Mi_Style_ Auto,
   mi_search_sphere, Mi_help_helptopic, mi_help_about;
 textarea text;

 mymenuframe ()             //construction method
  {
  super (Notepad);            //Specify window caption
  text = new TextArea (20, 20);
  add (text);
  clipboard = null;
  clipboard = Gettoolkit (). Getsystemclipboard ();    //Get system Clipboard

  filedialog_save = new FileDialog (This, Save File dialog box, Filedialog.save);
  filedialog_save.setvisible (FALSE);
  filedialog_load = new FileDialog (This, open File dialog box, filedialog.load);
  filedialog_load.setvisible (FALSE);
  m_menubar = new MenuBar ();
  menufile = new Menu ("file");//Create a submenu item, create a menu subkey, and initialize
  menuitem mi_file_new = new MenuItem ("new") ;
  menuitem mi_file_open = new MenuItem ("open");
  menuitem mi_file_save = new MenuItem ("Save");
  menuitem mi_file_saveas = new MenuItem ("Save As");
  menuitem mi_file_close = new MenuItem ("Off");
  menuitem mi_file_exit = new MenuItem ("Exit");
  //mi_file_exit.setshortcut (New Menushortcut (´x´));//Set shortcut key
  mi _file_open.setactioncommand ("open");//Simplify
  mi_file_new.setactioncommand ("new");

Mi_file_exit.setactioncommand ("Exit");

Mi_file_new.addactionlistener (this);//Make menu children respond to action events
Mi_file_open.addactionlistener (this);
Mi_file_save.addactionlistener (this);
Mi_file_saveas.addactionlistener (this);
Mi_file_close.addactionlistener (this);
Mi_file_exit.addactionlistener (this);
Menufile.add (Mi_file_new)//Add menu items to menu item
Menufile.add (Mi_file_open);
Menufile.add (Mi_file_save);
Menufile.add (Mi_file_saveas);
Menufile.add (Mi_file_close);
Menufile.addseparator ()//Add a transverse split line
Menufile.add (Mi_file_exit);

M_menubar.add (Menufile)//Add menu item
Menuedit = new Menu ("edit");
Mi_edit_ce = new MenuItem ("undo");
Mi_edit_copy = new MenuItem ("copy");
Mi_edit_cut = new MenuItem ("cut");
Mi_edit_paste = new MenuItem ("paste");
Mi_edit_copy.setactioncommand ("copy");
Mi_edit_cut.setactioncommand ("cut");
Mi_edit_paste.setactioncommand ("paste");

Mi_edit_ce.addactionlistener (this);
Mi_edit_copy.addactionlistener (this);
Mi_edit_cut.addactionlistener (this);
Mi_edit_paste.addactionlistener (this);
Menuedit.add (MI_EDIT_CE);
Menuedit.add (mi_edit_copy);
Menuedit.add (Mi_edit_cut);
Menuedit.add (Mi_edit_paste);
M_menubar.add (Menuedit);

Menustyle = new Menu ("format");
Mi_style_auto = new MenuItem ("Auto wrap");
Mi_style_font = new MenuItem ("Font");
Mi_style_auto.addactionlistener (this);
Mi_style_font.addactionlistener (this);
Menustyle.add (Mi_style_auto);
Menustyle.add (Mi_style_font);
M_menubar.add (Menustyle);
Menusearch = new Menu ("View");
Mi_search_sphere = new MenuItem ("status bar");
Mi_search_sphere.addactionlistener (this);
Menusearch.add (Mi_search_sphere);
M_menubar.add (Menusearch);
Menuhelp = new Menu ("Help");
Mi_help_helptopic = new MenuItem ("Help topic");
Mi_help_about = new MenuItem ("About Notepad");
Mi_help_helptopic.addactionlistener (this);
Mi_help_about.addactionlistener (this);
Menuhelp.add (Mi_help_helptopic);
Menuhelp.add (mi_help_about);
M_menubar.add (MENUHELP);
Setmenubar (M_menubar);//Add menu bar to menu
Addwindowlistener (New Windowadapter ()/Monitor window (Close window)
{
public void windowclosing (WindowEvent e) {
System.exit (0);
}
});
SetVisible (TRUE);
Validate (); If something else is loaded, it can be used to display the component

}

public void actionperformed (ActionEvent e) {
if (e.getactioncommand () = = "new") {
Text.settext (null);/empty
}
if (e.getactioncommand () = = "Open") {
Filedialog_load.setvisible (TRUE);//Make file Dialog visible
}
if (e.getactioncommand () = = "Save") {
Filedialog_save.setvisible (TRUE);//Make file Dialog visible
}
if (E.getactioncommand () = "Copy") {
String s = text.getselectedtext ();//Copy to Clipboard
StringSelection Text1 = new StringSelection (s);//Drag mouse to select text
Clipboard.setcontents (Text1, NULL);
}
if (e.getactioncommand () = = "Cut") {
String S1 = Text.getselectedtext ();//Cut to Clipboard
StringSelection Text1 = new StringSelection (s1);//Drag mouse to select text
Clipboard.setcontents (Text1, NULL);
Int J = Text.getselectionstart ();
int k = Text.getselectionend ();
Text.replacerange ("", J, k);//Delete selected text from text
}
if (E.getactioncommand () = "paste")//paste data from the Clipboard
{
Transferable transferable = clipboard.getcontents (this);
DataFlavor DataFlavor = Dataflavor.stringflavor;
if (transferable.isdataflavorsupported (DataFlavor)) {
try//handles occurrence of exception events (type not compliant)
{
String s3 = (string) transferable.gettransferdata (DataFlavor);
Text.insert (S3, Text.getcaretposition ());
catch (Exception E1) {
}
}
}
if (e.getactioncommand () = = "Exit") {
Dispose ();
System.exit (0);
}

}
}