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Notepad in Java

By rahul jaiswal Blogs | Java Aug 26, 2012
This is a sample code for Notepad in Java.
Download Files: notepad.zip



import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
import java.io.*;
class popup extends JFrame implements ActionListener
{
final JDesktopPane desk;
JButton b,b1,b2,b3,b4,b5,b6,b7,b8,b9,b10,b11;
JPopupMenu popmenu;
JToolBar tb;
JScrollPane scroll;
JTextArea txt;
JMenuItem cut,copy,paste;
JMenu file,edit,format,view,help;
JMenuItem  new1,open,save,saveas,print,pageset,exit;
JMenuItem cut1,copy1,paste1;
JMenuItem font;
JMenuItem viewhelp,abtnotepad;
JMenuBar menubar;
JCheckBoxMenuItem bold,italic,underline,word;
JComboBox cb;
String a[] ={"1","2","3"};
    popup()
{
 setTitle("Notepad++");
 popmenu=new JPopupMenu();
 txt=new JTextArea();
 scroll = new JScrollPane(txt);
 txt.setLineWrap(true);
 //popupmenu
 cut=new JMenuItem("Cut", new ImageIcon("cut.jpg"));
 copy=new JMenuItem("Copy", new ImageIcon("copy.jpg"));
 paste=new JMenuItem("Paste",new ImageIcon("paste.jpg"));
 //menubar
 menubar=new JMenuBar();
 ImageIcon icon = new ImageIcon("notepad.jpg");
 setIconImage(icon.getImage());
      file = new JMenu ("File");
 file.setMnemonic(KeyEvent.VK_F);
      edit=new JMenu("Edit");
 edit.setMnemonic(KeyEvent.VK_E);
 format=new JMenu("Format");
 format.setMnemonic(KeyEvent.VK_T);
 view=new JMenu("View");
 view.setMnemonic(KeyEvent.VK_V);
 help=new JMenu("Help");
      help.setMnemonic(KeyEvent.VK_H);
 //addmenu
      menubar.add(file);
 menubar.add(edit);
 menubar.add(format);
 menubar.add(view);
 menubar.add(help);
 setJMenuBar(menubar);

 //menuitem file
 new1=new JMenuItem("New", new ImageIcon("new.jpg"));
 new1.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_N,Event.CTRL_MASK));
 new1.addActionListener(this);
 //open
 open=new JMenuItem("Open" , new ImageIcon("open.jpg"));
 open.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_O,Event.CTRL_MASK));
 //open.addActionListener(this);
//save
 save=new JMenuItem("Save" ,new ImageIcon("save.jpg"));
 save.addActionListener(this);
 save.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S,Event.CTRL_MASK));
 //saveas
 saveas=new JMenuItem("Save as",new ImageIcon("saveas.jpg"));
 saveas.addActionListener(this);
 //pageset
 pageset=new JMenuItem("Page Setup");
 pageset.addActionListener(this);
 //print
      print=new JMenuItem("Print",new ImageIcon("print.jpg"));
 print.addActionListener(this);
 //exit
 exit=new JMenuItem("Exit");
 exit.addActionListener(this);
 exit.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_Q,Event.CTRL_MASK));
 file.add(new1);
 file.add(open);
 file.add(save);
 file.add(saveas);
 file.addSeparator();
 file.add(pageset);
 file.add(print);
 file.addSeparator();
 file.add(exit);
      //edit
 cut1=new JMenuItem("Cut", new ImageIcon ("cut.jpg") );
 copy1=new JMenuItem("Copy",new ImageIcon("copy.jpg"));
 paste1=new JMenuItem("Paste" , new ImageIcon("paste.jpg"));
 edit.add(cut1);
 edit.add(copy1);
      edit.add(paste1);
 cut1.addActionListener(this);
 copy1.addActionListener(this);
 paste1.addActionListener(this);
 //format
  word=new JCheckBoxMenuItem("Word Wrap");
      format.add(word);
 //help
 viewhelp =new JMenuItem("View Help",new ImageIcon("help.jpg"));
 abtnotepad=new JMenuItem("About Notepad");
 help.add(viewhelp);
 help.add(abtnotepad);
 abtnotepad.addActionListener(this);
 //chekbox
 bold=new JCheckBoxMenuItem("Bold" ,new ImageIcon("bold.jpg"));
 italic=new JCheckBoxMenuItem("Italic" ,new ImageIcon("italic.jpg"));
 underline=new JCheckBoxMenuItem("UnderLine" ,new ImageIcon("underline.jpg"));
 JMenu nn = new JMenu("Bold");
 nn.add(bold);
 nn.add(italic);
 nn.add(underline);
 format.add(nn);
 ButtonGroup bg =new ButtonGroup();
 JRadioButtonMenuItem left=new JRadioButtonMenuItem("Left" ,new ImageIcon("left.jpg"));
      JRadioButtonMenuItem center=new JRadioButtonMenuItem("Center" ,new ImageIcon("center.jpg"));
 JRadioButtonMenuItem right=new JRadioButtonMenuItem("Right" ,new ImageIcon("right.jpg"));
  JRadioButtonMenuItem  just=new JRadioButtonMenuItem("Justify",new ImageIcon("just.jpg"));
 bg.add(left);
 bg.add(center);
 bg.add(right);
 bg.add(just);
 JMenu xxx = new JMenu("Align");
 xxx.add(left);
 xxx.add(center);
 xxx.add(right);
 xxx.add(just);
// format.add(bold);
 //format.add(italic);
 //format.add(underline);
 format.addSeparator();
 format.add(xxx);
 
 //toolbarnew 
 tb=new JToolBar(SwingConstants.VERTICAL);
 tb.setBackground(Color.green);
 tb.setLayout(new GridLayout(1,0));
 b = new JButton (new ImageIcon("new.jpg"));
 b1 = new JButton(new ImageIcon("open.jpg"));
 b2=new JButton(new ImageIcon("save.jpg"));
 b3=new JButton(new ImageIcon("cut.jpg"));
 b4=new JButton(new ImageIcon("copy.jpg"));
 b5=new JButton(new ImageIcon("paste.jpg"));
 b6=new JButton(new ImageIcon("left.jpg"));
 b6.addActionListener(this);
 b7=new JButton(new ImageIcon("center.jpg"));
 b7.addActionListener(this);
 b8=new JButton(new ImageIcon("right.jpg"));
 b8.addActionListener(this);
 b9=new JButton(new ImageIcon("help.jpg"));
 b10=new JButton(new ImageIcon("print.jpg"));
 b11=new JButton(new ImageIcon("right.jpg"));
 cb=new JComboBox(a);
 b.addActionListener(this);
 b.setActionCommand("New");
 b1.addActionListener(this);
 b2.addActionListener(this);
 b3.addActionListener(this);
 b4.addActionListener(this);
 b5.addActionListener(this);
 b6.addActionListener(this);
 b7.addActionListener(this);
 b8.addActionListener(this);
 b9.addActionListener(this);
 b10.addActionListener(this);
      b11.addActionListener(this);
 //format register.....
 italic.addActionListener(this);
 //end
 
 tb.add(b);
 tb.add(b1);
 tb.add(b2);
 tb.addSeparator();
 tb.add(cb);
 tb.add(b3);
 tb.add(b4);
 tb.add(b5);
 tb.addSeparator();
 tb.add(b6);
 tb.add(b7);
 tb.add(b8);
 tb.addSeparator();
      tb.add(b9);
 tb.add(b10);
 tb.add(b11);
 add(BorderLayout.NORTH,tb);
 desk=new JDesktopPane();
 add(desk);
 popmenu.add(cut);
 popmenu.add(copy);
 popmenu.add(paste);
 txt.addMouseListener(new MouseAdapter()
 {
      public void mouseReleased(MouseEvent e)
   {
     if (e.isPopupTrigger())
     {
  popmenu.setLocation(e.getX(),e.getY());
  popmenu.setVisible(true);
     }
   }
     });
 add(scroll);
 txt.setFont(new Font("Times New Roman",Font.BOLD,20));
      setSize(500,400);
 //setBounds(400,50,700,500);
 setVisible(true);
 setDefaultCloseOperation(EXIT_ON_CLOSE);
}
public void actionPerformed(ActionEvent e)
{
if (e.getSource()==italic)
{
txt.setFont(new Font ("Arial",Font.ITALIC,22));
}
if (e.getSource()==cut1 || e.getSource()==b3)
{
txt.cut();
}
if (e.getSource()==copy1 || e.getSource()==b4)
{
txt.copy();
}
if (e.getSource()==paste1 || e.getSource()==b5)
{
txt.paste();
}

if (e.getSource()==new1 ||  e.getSource()==b)
{
new popup();
}
if (e.getSource()==exit)
{
System.exit(0);
}
if (e.getSource()==abtnotepad)
{
JOptionPane op = new JOptionPane();
JOptionPane.showMessageDialog(this,"Notepad is easily to note anything your reqiurnemet","ABOUTNOTEPAD",JOptionPane.INFORMATION_MESSAGE);
}
if (e.getSource()==save)
{
try
{
FileDialog save=new FileDialog(this,"save dear",FileDialog.SAVE);
save.show();
FileWriter write = new FileWriter(save.getDirectory()+save.getFile());
BufferedWriter wr = new BufferedWriter(write);
wr.write(this.txt.getText());
wr.close();
}
catch (Exception ex)
{
System.out.println(" "+ex);
}
   
}
if (e.getSource()==open || e.getSource()==b1)
{
try
{
FileDialog fd = new FileDialog(this,"Open File",FileDialog.LOAD);
fd.show();
System.out.println(fd.getDirectory()+fd.getFile());
FileReader fr = new FileReader(fd.getDirectory()+fd.getFile());
BufferedReader br = new BufferedReader(fr);
String hi=br.readLine();
while (hi!=null)
{
txt.append(hi+"\n");
hi=br.readLine();
}
fr.close();
}
catch (Exception ex)
{
System.out.print(" "+ex);
}
}
}
public static void main(String[] args) 
{
new popup();
}
}

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