import java.awt.*;
	import javax.swing.*;
	import javax.swing.UIManager;
	import java.awt.BorderLayout;
	import java.awt.FileDialog;
	import java.awt.Frame;
	import java.awt.TextArea;
	import java.awt.event.ActionEvent;
	import java.awt.event.ActionListener;
	import java.io.BufferedReader;
	import java.io.FileInputStream;
	import java.io.FileOutputStream;
	import java.io.IOException;
	import java.io.InputStreamReader;
	import java.io.OutputStream;

	import javax.swing.JFrame;
	import javax.swing.JMenu;
	import javax.swing.JMenuBar;
	import javax.swing.JMenuItem;
	import javax.swing.JRadioButtonMenuItem;

	public class MyNotepad extends JFrame implements ActionListener {

	    private static final long serialVersionUID = 1L;

	    private TextArea area;

	    private JMenuBar mb;

	    private JMenu mFile;
	    private JMenu mEdit;
	    private JMenu mView;
	    private JMenu mHelp;

		private JMenuItem novii;
	    private JMenuItem open;
	    private JMenuItem save;
	    private JMenuItem exit;

	    private JMenuItem cut;
		private JMenuItem copy;
		private JMenuItem paste;
	    private JMenuItem delete;
	    private JMenuItem select_all;

	    private JRadioButtonMenuItem cpUTF8;
	    private JRadioButtonMenuItem cp1251;
	    private JRadioButtonMenuItem cp866;
	    private JRadioButtonMenuItem cpkoi8r;

	    private JMenuItem about;

	    private String encoding = "UTF-8";
	    private String buf = "";

	    public MyNotepad() {

	        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

	        setLayout(new BorderLayout());

	        area = new TextArea();
	        add(area);

	        mb = new JMenuBar();

	        mFile = new JMenu("Файл");

			novii = new JMenuItem("Новый");
	        open = new JMenuItem("Открыть");
	        save = new JMenuItem("Сохранить");
	        exit = new JMenuItem("Выйти");

			novii.addActionListener(this);
	        open.addActionListener(this);
	        save.addActionListener(this);
	        exit.addActionListener(this);

			mFile.add(novii);
	        mFile.add(open);
	        mFile.add(save);
	        mFile.addSeparator();
	        mFile.add(exit);

	        mb.add(mFile);
	 //***Редактирование
	        mEdit = new JMenu("Редактирование");

	        cut = new JMenuItem("Вырезать");
			copy = new JMenuItem("Копировать");
	        paste = new JMenuItem("Вставить");
	        delete = new JMenuItem("Удалить");
	        select_all = new JMenuItem("Выделить ВСЁ");

	        cut.addActionListener(this);
			copy.addActionListener(this);
	        paste.addActionListener(this);
			delete.addActionListener(this);
			select_all.addActionListener(this);

	        mEdit.add(cut);
			mEdit.add(copy);
			mEdit.add(paste);
	        mEdit.add(delete);
			mEdit.add(select_all);
	        mb.add(mEdit);
	 //***Редактирование_енд=)

	        mView = new JMenu("Вид");

	        cpUTF8 = new JRadioButtonMenuItem("UTF-8", true);
	        cp1251 = new JRadioButtonMenuItem("CP1251");
	        cp866 = new JRadioButtonMenuItem("CP866");
	        cpkoi8r = new JRadioButtonMenuItem("KOI8-R");

	        cpUTF8.addActionListener(this);
	        cp1251.addActionListener(this);
	        cp866.addActionListener(this);
	        cpkoi8r.addActionListener(this);

	        mView.add(cpUTF8);
	        mView.add(cp1251);
	        mView.add(cp866);
	        mView.add(cpkoi8r);

	        mb.add(mView);

	        mHelp = new JMenu("Справка");
	        about = new JMenuItem("О программе...");
	        about.addActionListener(this);
	        mHelp.add(about);

	        mb.add(mHelp);

	        setJMenuBar(mb);
	        pack();
	    }



	    public void actionPerformed(ActionEvent e) {
	        Object source = e.getSource();
	        if (source == novii) {
				novii();
	        } else if (source == open) {
	            openFile();
	        } else if (source == save) {
	            saveFile();
	        } else if (source == exit) {
	            exit();
	        } else if (source == cut) {
	            cut();
	        } else if (source == copy) {
	            copy();
	        }else if (source == paste) {
	            paste();
	        }else if (source == delete) {
	            delete();
	        }else if (source == select_all) {
	            select_all();
	        }else if (source == about) {
				about();
	        }else if (source == cpUTF8) {
	            cp1251.setSelected(false);
	            cp866.setSelected(false);
	            cpkoi8r.setSelected(false);
	            encoding = cpUTF8.getText();
	        } else if (source == cp1251) {
	            cpUTF8.setSelected(false);
	            cp866.setSelected(false);
	            cpkoi8r.setSelected(false);
	            encoding = cp1251.getText();
	        } else if (source == cp866) {
	            cpUTF8.setSelected(false);
	            cp1251.setSelected(false);
	            cpkoi8r.setSelected(false);
	            encoding = cp866.getText();
	        } else if (source == cpkoi8r) {
	            cpUTF8.setSelected(false);
	            cp1251.setSelected(false);
	            cp866.setSelected(false);
	            encoding = cpkoi8r.getText();
	        }
	    }

//Методы поля mFile
		private void novii() {
			area.setText("");
	    }
	    private void exit() {
	        System.exit(0);
	    }
//Методы поля mEdit
	    private void cut() {
			buf = area.getSelectedText();
			area.replaceRange ("", area.getSelectionStart(), area.getSelectionEnd());
	    }
	    private void copy() {
			buf = area.getSelectedText();
	    }
	   	private void paste() {
			area.replaceRange (buf, area.getSelectionStart(), area.getSelectionEnd());
	    }
	    private void delete() {
			area.replaceRange ("", area.getSelectionStart(), area.getSelectionEnd());
	    }
	    private void select_all() {
			area.selectAll();
	    }
	    private void about() {
			JOptionPane.showMessageDialog(null,"Текстовый редактор.\n Сделан для лабораторной работы #4.\n Автор: Лисник Александр");
	    }
//Методы поля mFile: "Открыть" и "Сохранить"
	    private void saveFile() {
	        FileDialog fd = new FileDialog(this, " Сохранить", FileDialog.SAVE);
	        fd.setVisible(true);
	        String path = fd.getDirectory();
	        if (path == null) {
	            return;
	        }
	        path += fd.getFile();
	        byte[] buf;
	        OutputStream os = null;
	        try {
	            buf = area.getText().getBytes(encoding);
	            os = new FileOutputStream(path);
	            os.write(buf);
	        } catch (Exception e) {
	            e.printStackTrace();
	            return;
	        } finally {
	            if (os != null) {
	                try {
	                    os.close();
	                } catch (IOException e) {
	                    e.printStackTrace();
	                }
	            }
	        }
	    }

	    private void openFile() {
	        FileDialog fd = new FileDialog(this, " Загрузить", FileDialog.LOAD);
	        fd.setVisible(true);
	        String path = fd.getDirectory();
	        if (path == null) {
	            return;
	        }
	        path += fd.getFile();
	        StringBuilder sb = new StringBuilder();
	        BufferedReader br = null;
	        try {
	            br = new BufferedReader(new InputStreamReader(new FileInputStream(path), encoding));
	            for (int ch = br.read(); ch != -1; ch = br.read()) {
	                sb.append((char) ch);
	            }
	            area.setText(sb.toString());
	        } catch (Exception e) {
	            e.printStackTrace();
	            return;
	        } finally {
	            if (br != null) {
	                try {
	                    br.close();
	                } catch (Exception e) {
	                    e.printStackTrace();
	                }
	            }
	        }
	    }
// Главный класс main
	    public static void main(String[] args) {
	        javax.swing.SwingUtilities.invokeLater(new Runnable() {
	            public void run() {
					try {
						UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
					} catch (Exception e){}
	                Frame frame = new MyNotepad();
	                frame.setSize(800, 600);
	                frame.setVisible(true);
	            }
	        });
	    }
	}