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import java.awt.*;

import javax.swing.*;

import java.awt.event.*;

import java.io.*;

import java.awt.datatransfer.*;

public class Notepad extends JFrame implements ActionListener, WindowListener {

JTextArea jta=new JTextArea();

File fnameContainer;

public Notepad(){

Font fnt=new Font("Arial",Font.PLAIN,15);

Container con=getContentPane();

JMenuBar jmb=new JMenuBar();

JMenu jmfile = new JMenu("File");

JMenu jmedit = new JMenu("Edit");

JMenu jmhelp = new JMenu("Help");

con.setLayout(new BorderLayout());

//trying to add scrollbar

JScrollPane sbrText = new JScrollPane(jta);

sbrText.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);

sbrText.setVisible(true);

jta.setFont(fnt);

jta.setLineWrap(true);

jta.setWrapStyleWord(true);

con.add(sbrText);

createMenuItem(jmfile,"New");

createMenuItem(jmfile,"Open");

createMenuItem(jmfile,"Save");

jmfile.addSeparator();

createMenuItem(jmfile,"Exit");

createMenuItem(jmedit,"Cut");

createMenuItem(jmedit,"Copy");

createMenuItem(jmedit,"Paste");

createMenuItem(jmhelp,"About Notepad");

jmb.add(jmfile);

jmb.add(jmedit);

jmb.add(jmhelp);

setJMenuBar(jmb);

setIconImage(Toolkit.getDefaultToolkit().getImage("notepad.gif"));

addWindowListener(this);

setSize(500,500);

setTitle("Untitled.txt - Notepad");

setVisible(true);

}

public void createMenuItem(JMenu jm,String txt){

JMenuItem jmi=new JMenuItem(txt);

jmi.addActionListener(this);

jm.add(jmi);

}

public void actionPerformed(ActionEvent e){

JFileChooser jfc=new JFileChooser();

if(e.getActionCommand().equals("New")){

//new

this.setTitle("Untitled.txt - Notepad");

jta.setText("");

fnameContainer=null;

}else if(e.getActionCommand().equals("Open")){

//open

int ret=jfc.showDialog(null,"Open");

if(ret == JFileChooser.APPROVE_OPTION)

{

try{

File fyl=jfc.getSelectedFile();

OpenFile(fyl.getAbsolutePath());

this.setTitle(fyl.getName()+ " - Notepad");

fnameContainer=fyl;

}catch(IOException ers){}

}

}else if(e.getActionCommand().equals("Save")){

//save

if(fnameContainer != null){

jfc.setCurrentDirectory(fnameContainer);

jfc.setSelectedFile(fnameContainer);

}

else {

//jfc.setCurrentDirectory(new File("."));

jfc.setSelectedFile(new File("Untitled.txt"));

}

int ret=jfc.showSaveDialog(null);

if(ret == JFileChooser.APPROVE_OPTION){

try{

File fyl=jfc.getSelectedFile();

SaveFile(fyl.getAbsolutePath());

this.setTitle(fyl.getName()+ " - Notepad");

fnameContainer=fyl;

}catch(Exception ers2){}

}

}else if(e.getActionCommand().equals("Exit")){

//exit

Exiting();

}else if(e.getActionCommand().equals("Copy")){

//copy

jta.copy();

}else if(e.getActionCommand().equals("Paste")){

//paste

jta.paste();

}else if(e.getActionCommand().equals("About Notepad")){

//about

JOptionPane.showMessageDialog(this,"Created by: Ferdinand Silva (http://ferdinandsilva.com)","Notepad",JOptionPane.INFORMATION_MESSAGE);

}else if(e.getActionCommand().equals("Cut")){

jta.cut();

}

public void OpenFile(String fname) throws IOException {

//open file code here

BufferedReader d=new BufferedReader(new InputStreamReader(new FileInputStream(fname)));

String l;

//clear the textbox

jta.setText("");

setCursor(new Cursor(Cursor.WAIT_CURSOR));

while((l=d.readLine())!= null) {

jta.setText(jta.getText()+l+"\r\n");

}

setCursor(new Cursor(Cursor.DEFAULT_CURSOR));

d.close();

}

public void SaveFile(String fname) throws IOException {

setCursor(new Cursor(Cursor.WAIT_CURSOR));

DataOutputStream o=new DataOutputStream(new FileOutputStream(fname));

o.writeBytes(jta.getText());

o.close();

setCursor(new Cursor(Cursor.DEFAULT_CURSOR));

}

public void windowDeactivated(WindowEvent e){}

public void windowActivated(WindowEvent e){}

public void windowDeiconified(WindowEvent e){}

public void windowIconified(WindowEvent e){}

public void windowClosed(WindowEvent e){}

public void windowClosing(WindowEvent e) {

Exiting();

}

public void windowOpened(WindowEvent e){}

public void Exiting() {

System.exit(0);

}

public static void main (String[] args) {

Notepad notp=new Notepad();

}