import java.awt.BorderLayout;
import java.awt.FileDialog;
import java.awt.Frame;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.lang.String;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JTextArea;
/**
 *

 */
public class Notepad extends JFrame{FileInputStream fis;
    Notepad(String title){super(title);
    final JTextArea ta=new JTextArea("");
    add(ta,BorderLayout.CENTER);





    /**
     * @param args the command line arguments
     */
        
         
         JMenuBar md=new JMenuBar();
         setJMenuBar(md);
         JMenu File=new JMenu("Файл");
         md.add(File);
         JMenuItem open=new JMenuItem("Открыть");
        File.add(open);
         JMenuItem save=new JMenuItem("Сохранить как");
         File.add(save);
         JMenu sav=new JMenu("Сохранить");
         File.add(sav);
         
open.addActionListener(new ActionListener(){public void actionPerformed(ActionEvent e){try {
                    FileDialog fo = new FileDialog(new JFrame(), "Открыть", FileDialog.LOAD);
                    fo.show();
                  String fn=fo.getDirectory()+fo.getFile();
                    if (fn==null) {return;
                      
                    } else {

                    }
                   DataInputStream InS = new DataInputStream(new BufferedInputStream(new FileInputStream(fn)));
                    try {
                        Reader r = new InputStreamReader(InS, "UTF-8"); char cbuf[] = new char[InS.available()];
                int len;

                while ((len = r.read(cbuf)) != 0) {
                    String str = new String(cbuf, 0, len);
                    ta.setText(str);

                    r.close();
                    }}
                catch
                    (IOException ex) {
                        Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
                    }catch(ArrayIndexOutOfBoundsException ex){System.out.println("ex");}

                } catch (FileNotFoundException ex) {
                    Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
                }

                }
});
save.addActionListener(new ActionListener(){public void actionPerformed(ActionEvent e){ FileDialog fs=new FileDialog(new Frame(),"Сохранить как",FileDialog.SAVE);
fs.show();
String nfs=fs.getDirectory()+fs.getFile();try {

DataOutputStream IoS = new DataOutputStream(new BufferedOutputStream(new FileOutputStream(nfs+".txt")));
String fil=ta.getText();
byte[] buff=fil.getBytes();
                    try {
                        IoS.write(buff);
                    } catch (IOException ex) {
                        Logger.getLogger(Notepad.class.getName()).log(Level.SEVERE, null, ex);
                    }
                    try {
                        IoS.close();
                    } catch (IOException ex) {
                        Logger.getLogger(Notepad.class.getName()).log(Level.SEVERE, null, ex);
                    }
 } catch (FileNotFoundException ex) {Logger.getLogger(Notepad.class.getName()).log(Level.SEVERE, null, ex);}
}});
sav.addActionListener(new ActionListener(){public void actionPerformed(ActionEvent ev){
try{DataOutputStream IsS = new DataOutputStream(new BufferedOutputStream(new FileOutputStream(fn+".txt")));//Здесь ошибка (fn)
String fil=ta.getText();
byte[] buf=fil.getBytes();
                    try {
                        IsS.write(buf);
                    } catch (IOException ex) {
                        Logger.getLogger(Notepad.class.getName()).log(Level.SEVERE, null, ex);
                    }
                    try {
                        IsS.close();
                    } catch (IOException ex) {
                        Logger.getLogger(Notepad.class.getName()).log(Level.SEVERE, null, ex);
                    }
 } catch (FileNotFoundException ex) {Logger.getLogger(Notepad.class.getName()).log(Level.SEVERE, null, ex);}}});
}
   

}