Java仿Windows记事本源代码

来源：互联网发布：淘宝店经营技巧编辑：程序博客网时间：2024/06/05 11:23
先上截图：
这里写图片描述

源代码：
import java.awt.*;import javax.swing.*;import javax.swing.filechooser.FileNameExtensionFilter;import javax.swing.undo.UndoManager;import java.awt.event.*;import java.io.*;/** *  * @author cjbi@outlook.com * @created 2015年7月6日 上午11:22:24 */public class JNotepad extends JFrame implements ActionListener {    JMenuBar menubar = new JMenuBar();    JMenu file = new JMenu("文件(F)");    JMenu edit = new JMenu("编辑(E)");    JMenu format = new JMenu("格式(O)");    JMenu help = new JMenu("帮助(H)");    JMenuItem create = new JMenuItem("新建");    JMenuItem open = new JMenuItem("打开...");    JMenuItem save = new JMenuItem("保存");    JMenuItem saveAs = new JMenuItem("另存为...");    JMenuItem exit = new JMenuItem("退出");    JMenuItem undo = new JMenuItem("撤销");    JMenuItem cut = new JMenuItem("剪切");    JMenuItem copy = new JMenuItem("复制");    JMenuItem paste = new JMenuItem("粘贴");    JMenuItem findRep = new JMenuItem("查找替换");    JMenuItem selectAll = new JMenuItem("全选");    JMenuItem font = new JMenuItem("字体");    JMenuItem about = new JMenuItem("关于");    JMenuItem cut2 = new JMenuItem("剪切(X)");    JMenuItem copy2 = new JMenuItem("复制(C)");    JMenuItem paste2 = new JMenuItem("粘贴(V)");    JMenuItem selectAll2 = new JMenuItem("全选(A)");    public static JTextArea textarea = new JTextArea();    UndoManager um = new UndoManager();    JScrollPane scroll = new JScrollPane(textarea, ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS, ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED);    JPopupMenu popup = new JPopupMenu();    String pathSelect;    // 获取屏幕尺寸    Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();    public JNotepad() {        // 此处定义键盘快捷键        // MenuBar        file.setMnemonic(KeyEvent.VK_F);        edit.setMnemonic(KeyEvent.VK_E);        format.setMnemonic(KeyEvent.VK_O);        help.setMnemonic(KeyEvent.VK_H);        // MenuItem        create.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_N, ActionEvent.CTRL_MASK));        open.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_O, ActionEvent.CTRL_MASK));        save.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S, ActionEvent.CTRL_MASK));        undo.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_Z, ActionEvent.CTRL_MASK));        cut.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_X, ActionEvent.CTRL_MASK));        copy.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_C, ActionEvent.CTRL_MASK));        paste.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_V, ActionEvent.CTRL_MASK));        findRep.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_F, ActionEvent.CTRL_MASK));        selectAll.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_A, ActionEvent.CTRL_MASK));        // 事件监听者        save.addActionListener(this);        create.addActionListener(this);        open.addActionListener(this);        saveAs.addActionListener(this);        exit.addActionListener(this);        undo.addActionListener(this);        cut.addActionListener(this);        copy.addActionListener(this);        paste.addActionListener(this);        selectAll.addActionListener(this);        font.addActionListener(this);        about.addActionListener(this);        cut2.addActionListener(this);        copy2.addActionListener(this);        paste2.addActionListener(this);        selectAll2.addActionListener(this);        findRep.addActionListener(this);        // 设置撤销文本的管理器        textarea.getDocument().addUndoableEditListener(um);        textarea.setFont(Format.font);        // 文件        file.add(create);        file.add(open);        file.add(save);        file.add(saveAs);        file.addSeparator();        file.add(exit);        // 编辑        edit.add(undo);        edit.addSeparator();        edit.add(cut);        edit.add(copy);        edit.add(paste);        edit.addSeparator();        edit.add(findRep);        edit.addSeparator();        edit.add(selectAll);        // 格式        format.add(font);        // 帮助        help.add(about);        // 菜单栏        menubar.add(file);        menubar.add(edit);        menubar.add(format);        menubar.add(help);        // 右键菜单        popup.add(cut2);        popup.add(copy2);        popup.add(paste2);        popup.addSeparator();        popup.add(selectAll2);        // 添加到文本域容器        textarea.add(popup);        // 匿名内部类监听器右键动作        textarea.addMouseListener(new MouseAdapter() {            public void mouseReleased(MouseEvent e) {                if (e.getButton() == MouseEvent.BUTTON3) {                    popup.show(textarea, e.getX(), e.getY());                }            }        });        // 边界布局        this.add(menubar, BorderLayout.NORTH);        this.add(scroll, BorderLayout.CENTER);        this.setTitle("记事本");        this.setSize(500, 400);        this.setLocationRelativeTo(null);        this.setIconImage(new ImageIcon(this.getClass().getResource("/icon/notepad.png")).getImage());//图标放在源目录的icon文件夹        this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);        this.setVisible(true);    }    // 重写actionPerformed    @Override    public void actionPerformed(ActionEvent e) {        // Event对象发生源        if (e.getSource() == open) {            JFileChooser chooser = new JFileChooser();            FileNameExtensionFilter filter = new FileNameExtensionFilter("文本文档(*.txt)", "txt");            chooser.setFileFilter(filter);            chooser.setDialogTitle("文件打开");            chooser.showOpenDialog(null);            chooser.setVisible(true);            try {                pathSelect = chooser.getSelectedFile().getPath();                FileReader wjl = new FileReader(pathSelect);                BufferedReader hcl = new BufferedReader(wjl);                String s = "", zfc = "";                while ((s = hcl.readLine()) != null) {                    zfc += (s + "\n");                }                textarea.setText(zfc);            } catch (Exception e1) {            }        }        if (e.getSource() == saveAs) {// 另存为            JFileChooser chooser = new JFileChooser();            FileNameExtensionFilter filter = new FileNameExtensionFilter("文本文档(*.txt)", "txt");            chooser.setFileFilter(filter);            chooser.setDialogTitle("另存为");            chooser.showSaveDialog(null);            chooser.setVisible(true);            PrintStream ps;            try {                String select = chooser.getSelectedFile().getPath();                ps = new PrintStream(select);                System.setOut(ps);                System.out.println(this.textarea.getText());            } catch (Exception e1) {            }        }        if (e.getSource() == save && (pathSelect == null)) {// 保存            JFileChooser chooser = new JFileChooser();            chooser.setDialogTitle("保存");            chooser.showSaveDialog(null);            chooser.setVisible(true);            PrintStream ps;            try {                pathSelect = chooser.getSelectedFile().getPath();                ps = new PrintStream(pathSelect);                System.setOut(ps);                System.out.println(this.textarea.getText());            } catch (Exception e1) {            }        } else if (e.getSource() == save && !(pathSelect == null)) {            PrintStream ps;            try {                ps = new PrintStream(pathSelect);                System.setOut(ps);                System.out.println(this.textarea.getText());            } catch (FileNotFoundException e1) {            }        }        if (e.getSource() == create) {            textarea.setText("");            pathSelect = null;        }        if (e.getSource() == exit) {            System.exit(0);        }        if (e.getSource() == undo) {            if (um.canUndo()) {                um.undo();            }        }        if (e.getSource() == cut || e.getSource() == cut2) {            textarea.cut();        } else if (e.getSource() == copy || e.getSource() == copy2) {            textarea.copy();        } else if (e.getSource() == paste || e.getSource() == paste2) {            textarea.paste();        } else if (e.getSource() == findRep) {            new FindAndReplace(textarea);        }        else if (e.getSource() == selectAll || e.getSource() == selectAll2) {            textarea.selectAll();        }        if (e.getSource() == font) {            new Format(textarea);        }        if (e.getSource() == about) {            new About();        }    }    public static void main(String[] args) {        new JNotepad();    }}class FindAndReplace extends JDialog implements ActionListener {// 查找和替换    JLabel findLabel = new JLabel("查找内容：");    JLabel repLabel = new JLabel("    替换为：");    JTextField findTf = new JTextField(8);    JTextField repTf = new JTextField(8);    JButton findBtn = new JButton("查找");    JButton repBtn = new JButton("替换");    JPanel findPn = new JPanel();    JPanel repPn = new JPanel();    JTextArea textarea;    String text;    boolean flg = false;    int len;    int start = 0;    int k = 0;    public FindAndReplace(JTextArea textarea) {        this.textarea = textarea;        findPn.add(findLabel);        findPn.add(findTf);        findPn.add(findBtn);        repPn.add(repLabel);        repPn.add(repTf);        repPn.add(repBtn);        this.add(findPn);        this.add(repPn);        findBtn.addActionListener(this);        repBtn.addActionListener(this);        this.setTitle("查找和替换");        this.setLayout(new GridLayout(2, 1));        // this.setBounds(400, 200, 300, 140);        this.pack();        this.setLocationRelativeTo(null);        this.setResizable(false);        this.setVisible(true);        this.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);    }    @SuppressWarnings("deprecation")    public void actionPerformed(ActionEvent e) {        String findText = findTf.getText();        String repText = repTf.getText();        text = textarea.getText();        if (e.getSource() == findBtn) {            findBtn.setLabel("下一个");            if (findText != null) {                len = findText.length();                start = text.indexOf(findText, k);                k = start + len;                textarea.select(start, start + len);                flg = true;                if (start == -1) {                    JOptionPane.showMessageDialog(null, "已到文件尾部！", "提示", JOptionPane.INFORMATION_MESSAGE);                    start = 0;                    k = 0;                    flg = false;                }            }        } else if (e.getSource() == repBtn) {            if (flg) {                textarea.replaceRange(repText, start, start + len);                flg = false;            }        }    }}// 字体格式class Format extends JDialog implements ActionListener {    public static int style = 0; // 全局变量类型，默认值为0    public static int size = 16; // 全局变量字体大小，默认值为16    public static Font font = new Font("新宋体", style, size); // 全局变量字体，默认值为新宋体    JPanel pn = new JPanel();    JPanel okCelPn = new JPanel();    JPanel fontPn = new JPanel();    JPanel ptPn = new JPanel();    JLabel fontLabel = new JLabel("字体:   ");    JLabel fontStyleLabel = new JLabel("    字形:   ");    JLabel ptLabel = new JLabel("       磅值:   ");    JButton ok = new JButton("确定");    JButton cancel = new JButton("取消");    GraphicsEnvironment e = GraphicsEnvironment.getLocalGraphicsEnvironment();// 获取系统中可用的字体的名字    String[] fontName = e.getAvailableFontFamilyNames();// 获取系统中可用的字体的名字    String[] fontType = { "常规", "倾斜", "粗体", "粗偏斜体" };    JList fontList = new JList(fontName);    JList fontTypeList = new JList(fontType);    JScrollPane fontScroll = new JScrollPane(fontList);    JScrollPane fontTypeScroll = new JScrollPane(fontTypeList);    JTextArea textarea;    SpinnerModel spinnerModel = new SpinnerNumberModel(size, // initial value            0, // min            100, // max            2 // Step    );    JSpinner spinner = new JSpinner(spinnerModel);    public Format(JTextArea textarea) {        this.textarea = textarea;        ok.addActionListener(this);        cancel.addActionListener(this);        pn.setLayout(new GridLayout(2, 1));        pn.add(fontPn);        pn.add(ptPn);        fontPn.add(fontLabel);        fontPn.add(fontScroll);        fontPn.add(fontStyleLabel);        fontPn.add(fontTypeScroll);        ptPn.add(ptLabel);        ptPn.add(spinner);        fontList.setVisibleRowCount(5);        fontList.setFixedCellWidth(60);        fontList.setSelectedIndex(50);        fontList.setSelectedValue(font.getFontName(), true);        fontTypeList.setVisibleRowCount(5);        fontTypeList.setSelectedIndex(style);        okCelPn.add(ok);        okCelPn.add(cancel);        okCelPn.setLayout(new FlowLayout(FlowLayout.RIGHT));        this.add(pn, BorderLayout.CENTER);        this.add(okCelPn, BorderLayout.SOUTH);        this.setTitle("字体");        this.pack();        this.setLocationRelativeTo(null);        this.setResizable(false);        this.setVisible(true);        this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);    }    public void actionPerformed(ActionEvent e) {        if (e.getSource() == ok) {            System.out.println(fontList.getSelectedValue());            style = this.type();            size = Integer.parseInt(spinner.getValue().toString());            font = new Font((String) fontList.getSelectedValue(), style, size);            textarea.setFont(font);            this.dispose();            System.out.println(type());        } else if (e.getSource() == cancel) {            this.dispose();        }    }    private int type() {        if (fontTypeList.getSelectedValue().equals("倾斜")) {            return 1;        } else if (fontTypeList.getSelectedValue().equals("粗体")) {            return 2;        } else if (fontTypeList.getSelectedValue().equals("粗偏斜体")) {            return 3;        } else            return 0;    }}class About extends JDialog {// 关于窗口    About() {        JOptionPane.showMessageDialog(null, "            作者：cjb          版本：v1.5\n\n            联系：cjbi@outlook.com", "关于",                JOptionPane.PLAIN_MESSAGE);    }}
转载请注明出处。
0 0