//notepad
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.util.Scanner;
import java.io.*;
public class Notepad extends JFrame implements ActionListener
{
private TextArea textarea = new TextArea("",0,0,TextArea.SCROLLBARS_VERTICAL_ONLY);
private MenuBar menubar = new MenuBar();
private Menu file = new Menu();
private MenuItem openfile = new MenuItem();
private MenuItem savefile = new MenuItem();
private MenuItem close = new MenuItem();
public Notepad(){
this.setSize(500,500);
this.setTitle("Java...Notepad Tutorial");
setDefaultCloseOperation(EXIT_ON_CLOSE);
this.textarea.setFont(new Font("Century Gothic",Font.BOLD,12));
this.getContentPane().setLayout(new BorderLayout());
this.getContentPane().add(textarea);
this.setMenuBar(this.menubar);
this.menubar.add(this.file);
this.file.setLabel("File");
this.openfile.setLabel("open");
this.openfile.addActionListener(this);
this.file.add(this.openfile);
this.savefile.setLabel("Save");
this.savefile.addActionListener(this);
this.file.add(this.savefile);
this.close.setLabel("Close");
this.close.addActionListener(this);
this.file.add(close);
}
public void actionPerformed(ActionEvent e)
{
if(e.getSource()==close)
{
this.dispose();
}
if(e.getSource()==openfile)
{
JFileChooser open = new JFileChooser();
int option = open.showOpenDialog(this);
if(option == JFileChooser.APPROVE_OPTION)
{
this.textarea.setText("");
try{
Scanner scan = new Scanner(new FileReader(open.getSelectedFile().getPath()));
while(scan.hasNext())
this.textarea.append(scan.nextLine() +'\n');
}
catch(Exception ex)
{
System.out.println(ex.getMessage());
}
}
}
if(e.getSource()==savefile)
{
JFileChooser save = new JFileChooser();
int option = save.showSaveDialog(this);
if(option == JFileChooser.APPROVE_OPTION)
{
try{
BufferedWriter out = new BufferedWriter(new FileWriter(save.getSelectedFile().getPath()));
out.write(this.textarea.getText());
out.close();
}
catch(Exception ex)
{
System.out.println(ex.getMessage());
}
}
}
}
public static void main(String args[]) {
Notepad app = new Notepad();
app.setVisible(true);
}
}
Output
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