- import java.awt.Color;
- import java.awt.Dimension;
- import java.awt.EventQueue;
- import java.awt.Font;
- import java.awt.GraphicsEnvironment;
- import java.awt.Insets;
- import java.awt.Toolkit;
- import java.awt.event.ActionEvent;
- import java.awt.event.ActionListener;
- import java.io.File;
- import java.io.FileReader;
- import java.io.FileWriter;
- import java.io.IOException;
- import javax.swing.JCheckBoxMenuItem;
- import javax.swing.JColorChooser;
- import javax.swing.JFileChooser;
- import javax.swing.JFrame;
- import javax.swing.JList;
- import javax.swing.JMenu;
- import javax.swing.JMenuBar;
- import javax.swing.JMenuItem;
- import javax.swing.JOptionPane;
- import javax.swing.JScrollPane;
- import javax.swing.JTextArea;
- import javax.swing.UIManager;
- import javax.swing.UnsupportedLookAndFeelException;
- import javax.swing.undo.UndoManager;
- /**
- * swing 简单记事本
- * @author kissy小强
- *
- */
- public class Note extends JFrame {
- private static final long serialVersionUID = 1L;
- UndoManager manager = new UndoManager();
- JTextArea text = new JTextArea();
- JFileChooser chooser;
- String s = "新建记事本";
- int result = 0;
- private File file;
- JMenuBar Mb;
- JMenu M1, M2, M3, M4;
- JMenuItem m11, m12, m13, m14, m15, m21, m22, m23, m24, m25, m32, m33, m41;
- private final static int HEIGHT=450;
- private final static int WIDTH=750;
- JCheckBoxMenuItem m31 = new JCheckBoxMenuItem("自动换行", true);
- public static void main(String args[]) {
- String lookAndFeel = UIManager.getSystemLookAndFeelClassName();
- try {
- UIManager.setLookAndFeel(lookAndFeel);
- } catch (ClassNotFoundException | InstantiationException
- | IllegalAccessException | UnsupportedLookAndFeelException e1) {
- e1.printStackTrace();
- }
- EventQueue.invokeLater(new Runnable() {
- public void run() {
- try {
- Note n = new Note();
- } catch (Exception e) {
- e.printStackTrace();
- }
- }
- });
- }
- public Note() {
- setTitle(s);
- setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
- Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
- // 离显示屏上边缘x像素,里显示屏左边缘y像素
- setLocation(screenSize.width / 2 - WIDTH / 2, screenSize.height / 2- HEIGHT / 2);
- setSize(WIDTH, HEIGHT);
- setResizable(true); // 窗体是否可变
- setVisible(true); // 窗体是否可见
- init();
- }
- private void init(){
- Mb = new JMenuBar();
- this.setJMenuBar(Mb);
- text.getDocument().addUndoableEditListener(manager);// 设置文本框编辑监听(可撤销)
- text.setFont(new Font("宋体", Font.PLAIN, 14));
- text.setCaretColor(Color.RED);// 光标颜色
- text.setSelectedTextColor(Color.RED);// 选中字体颜色
- text.setSelectionColor(Color.GREEN);// 选中背景颜色
- text.setLineWrap(true); // 是否换行
- text.setWrapStyleWord(true); // 是否单词边界换行(即有空白)
- text.setMargin(new Insets(3, 5, 3, 5));// 文本区与边框的间距,四个参数分别为上、左、下、右
- text.setDragEnabled(true); // 开启或关闭自动拖动处理
- add(new JScrollPane(text, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
- JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED));
- M1 = this.AddBar("文件", Mb);
- M2 = this.AddBar("编辑", Mb);
- M3 = this.AddBar("格式", Mb);
- M4 = this.AddBar("帮助", Mb);
- /* 新建选项 */
- m11 = this.AddItem("新建", M1);
- m11.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent event) {
- text.setText("");
- setTitle(s);
- file = null;
- }
- });
- /* 打开选项 */
- m12 = this.AddItem("打开", M1);
- m12.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent event) {
- try {
- // 设置打开时的默认目录,两种方式
- chooser = new JFileChooser("C:\\Users\\xiaozhx\\Desktop");
- // chooser.setCurrentDirectory(new File("C:\\Users\\xiaozhx\\Desktop"));
- chooser.setFileFilter(new filter());
- result = chooser.showOpenDialog(null);
- if (result == JFileChooser.APPROVE_OPTION) {
- // 点击了打开按钮
- file = chooser.getSelectedFile();
- int length = (int) file.length();
- FileReader reader = new FileReader(file);
- char[] ch = new char[length];
- reader.read(ch);
- reader.close();
- text.setText(new String(ch).trim());
- setTitle(file.getName());
- } else if (result == JFileChooser.CANCEL_OPTION) {
- // 点击了取消按钮
- }
- } catch (Exception e) {
- JOptionPane.showMessageDialog(null, e);
- }
- }
- });
- /* 保存选项 */
- m13 = this.AddItem("保存", M1);
- m13.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent event) {
- if (file == null)
- try {
- chooser = new JFileChooser(
- "C:\\Users\\xiaozhx\\Desktop");
- chooser.setFileFilter(new filter());
- result = chooser.showSaveDialog(null);
- if (result == JFileChooser.APPROVE_OPTION) {
- File selectfile = chooser.getSelectedFile(); // 获得文件名
- // 获得被选中的过滤器中的文件扩展名
- String end = chooser.getFileFilter().getDescription();
- File newFile = null;
- if (selectfile.getAbsolutePath().toUpperCase().endsWith(end.toUpperCase())) {
- // 如果文件是以选定扩展名结束的,则使用原名
- newFile = selectfile;
- } else {
- // 否则加上选定的扩展名
- newFile = new File(selectfile.getAbsolutePath()+ end);
- }
- try {
- if (newFile.exists() == false) {
- newFile.createNewFile();
- }
- FileWriter writer = new FileWriter(newFile);
- char[] arry = text.getText().toCharArray();
- writer.write(arry);
- writer.flush();
- writer.close();
- setTitle(newFile.getName());
- file = newFile;
- } catch (IOException e) {
- }
- } else if (result == JFileChooser.CANCEL_OPTION) {
- // 点击了取消按钮
- }
- } catch (Exception e) {
- JOptionPane.showMessageDialog(null, e);
- }
- else
- try {
- FileWriter writer = new FileWriter(file);
- char[] arry = text.getText().toCharArray();
- writer.write(arry);
- writer.flush();
- writer.close();
- } catch (Exception e) {
- JOptionPane.showMessageDialog(null, e);
- }
- }
- });
- /* 另存为选项 */
- m14 = this.AddItem("另存为", M1);
- m14.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent event) {
- try {
- chooser = new JFileChooser("C:\\Users\\xiaozhx\\Desktop");
- chooser.setFileFilter(new filter());
- result = chooser.showSaveDialog(null);
- if (result == JFileChooser.APPROVE_OPTION) {
- File selectfile = chooser.getSelectedFile(); // 获得文件名
- // 获得被选中的过滤器中的文件扩展名
- String end = chooser.getFileFilter().getDescription();
- File newFile = null;
- if (selectfile.getAbsolutePath().toUpperCase().endsWith(end.toUpperCase())) {
- // 如果文件是以选定扩展名结束的,则使用原名
- newFile = selectfile;
- } else {
- // 否则加上选定的扩展名
- newFile = new File(selectfile.getAbsolutePath()+ end);
- }
- try {
- if (newFile.exists() == false) {
- newFile.createNewFile();
- }
- FileWriter writer = new FileWriter(newFile);
- char[] arry = text.getText().toCharArray();
- writer.write(arry);
- writer.flush();
- writer.close();
- setTitle(newFile.getName());
- file = newFile;
- } catch (IOException e) {
- }
- } else if (result == JFileChooser.CANCEL_OPTION) {
- // 点击了取消按钮
- }
- } catch (Exception e) {
- JOptionPane.showMessageDialog(null, e);
- }
- }
- });
- M1.addSeparator(); // 横杆
- /* 退出选项 */
- m15 = this.AddItem("退出", M1);
- m15.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent event) {
- System.exit(0);
- }
- });
- /* 撤消选项 */
- m21 = this.AddItem("撤消", M2);
- m21.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent event) {
- if (manager.canUndo())
- manager.undo();
- }
- });
- /* 剪切选项 */
- M2.addSeparator();
- m22 = this.AddItem("剪切", M2);
- m22.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent event) {
- text.cut();
- }
- });
- /* 复制选项 */
- m23 = this.AddItem("复制", M2);
- m23.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent event) {
- text.copy();
- }
- });
- /* 粘贴选项 */
- m24 = this.AddItem("粘贴", M2);
- m24.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent event) {
- text.paste();
- }
- });
- /* 删除选项 */
- m25 = this.AddItem("删除", M2);
- m25.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent event) {
- text.replaceRange("", text.getSelectionStart(),
- text.getSelectionEnd());
- }
- });
- /* 自动换行选项 */
- M3.add(m31);
- m31.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent event) {
- if (m31.getState())
- text.setLineWrap(true);
- else
- text.setLineWrap(false);
- }
- });
- /* 字体格式设置选项 */
- m32 = this.AddItem("字体选择", M3);
- m32.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent event) {
- GraphicsEnvironment ge = GraphicsEnvironment
- .getLocalGraphicsEnvironment();
- //获取系统字体
- JList<String> fontNames = new JList<String>(ge.getAvailableFontFamilyNames());
- int response = JOptionPane.showConfirmDialog(null,
- new JScrollPane(fontNames), "请选择字体",
- JOptionPane.OK_CANCEL_OPTION);
- Object selectedFont = fontNames.getSelectedValue();
- if (response == JOptionPane.OK_OPTION && selectedFont != null)
- text.setFont(new Font(fontNames.getSelectedValue()
- .toString(), Font.PLAIN, 20));
- }
- });
- /* 字体颜色设置选项 */
- m33 = this.AddItem("字体颜色", M3);
- m33.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent event) {
- Color color = JColorChooser.showDialog(null, "文字颜色选择",
- Color.WHITE);
- text.setForeground(color);
- }
- });
- m41 = this.AddItem("关于记事本", M4);
- m41.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent event) {
- JOptionPane.showMessageDialog(null, "记事本\n开发语言:JAVA\n开发者:袁健强",
- "关于", JOptionPane.PLAIN_MESSAGE);
- }
- });
- }
- /** 文件格式过滤器 **/
- private class filter extends javax.swing.filechooser.FileFilter {
- public boolean accept(File file) {
- String name = file.getName();
- name.toLowerCase();
- if (name.endsWith(".txt") || file.isDirectory())
- return true;
- else
- return false;
- }
- public String getDescription() {
- return ".txt";
- }
- }
- /** 将菜单项JMenuItem添加到菜单JMenu **/
- public JMenuItem AddItem(String name, JMenu menu) {
- JMenuItem MI = new JMenuItem(name);
- menu.add(MI);
- return MI;
- }
- /** 将菜单JMenu添加到菜栏JMenuBar **/
- public JMenu AddBar(String name, JMenuBar mb) {
- JMenu Mb = new JMenu(name);
- mb.add(Mb);
- return Mb;
- }
- }
- import java.awt.Color;
- import java.awt.Dimension;
- import java.awt.EventQueue;
- import java.awt.Font;
- import java.awt.GraphicsEnvironment;
- import java.awt.Insets;
- import java.awt.Toolkit;
- import java.awt.event.ActionEvent;
- import java.awt.event.ActionListener;
- import java.io.File;
- import java.io.FileReader;
- import java.io.FileWriter;
- import java.io.IOException;
- import javax.swing.JCheckBoxMenuItem;
- import javax.swing.JColorChooser;
- import javax.swing.JFileChooser;
- import javax.swing.JFrame;
- import javax.swing.JList;
- import javax.swing.JMenu;
- import javax.swing.JMenuBar;
- import javax.swing.JMenuItem;
- import javax.swing.JOptionPane;
- import javax.swing.JScrollPane;
- import javax.swing.JTextArea;
- import javax.swing.UIManager;
- import javax.swing.UnsupportedLookAndFeelException;
- import javax.swing.undo.UndoManager;
- /**
- * swing 简单记事本
- * @author kissy小强
- *
- */
- public class Note extends JFrame {
- private static final long serialVersionUID = 1L;
- UndoManager manager = new UndoManager();
- JTextArea text = new JTextArea();
- JFileChooser chooser;
- String s = "新建记事本";
- int result = 0;
- private File file;
- JMenuBar Mb;
- JMenu M1, M2, M3, M4;
- JMenuItem m11, m12, m13, m14, m15, m21, m22, m23, m24, m25, m32, m33, m41;
- private final static int HEIGHT=450;
- private final static int WIDTH=750;
- JCheckBoxMenuItem m31 = new JCheckBoxMenuItem("自动换行", true);
- public static void main(String args[]) {
- String lookAndFeel = UIManager.getSystemLookAndFeelClassName();
- try {
- UIManager.setLookAndFeel(lookAndFeel);
- } catch (ClassNotFoundException | InstantiationException
- | IllegalAccessException | UnsupportedLookAndFeelException e1) {
- e1.printStackTrace();
- }
- EventQueue.invokeLater(new Runnable() {
- public void run() {
- try {
- Note n = new Note();
- } catch (Exception e) {
- e.printStackTrace();
- }
- }
- });
- }
- public Note() {
- setTitle(s);
- setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
- Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
- // 离显示屏上边缘x像素,里显示屏左边缘y像素
- setLocation(screenSize.width / 2 - WIDTH / 2, screenSize.height / 2- HEIGHT / 2);
- setSize(WIDTH, HEIGHT);
- setResizable(true); // 窗体是否可变
- setVisible(true); // 窗体是否可见
- init();
- }
- private void init(){
- Mb = new JMenuBar();
- this.setJMenuBar(Mb);
- text.getDocument().addUndoableEditListener(manager);// 设置文本框编辑监听(可撤销)
- text.setFont(new Font("宋体", Font.PLAIN, 14));
- text.setCaretColor(Color.RED);// 光标颜色
- text.setSelectedTextColor(Color.RED);// 选中字体颜色
- text.setSelectionColor(Color.GREEN);// 选中背景颜色
- text.setLineWrap(true); // 是否换行
- text.setWrapStyleWord(true); // 是否单词边界换行(即有空白)
- text.setMargin(new Insets(3, 5, 3, 5));// 文本区与边框的间距,四个参数分别为上、左、下、右
- text.setDragEnabled(true); // 开启或关闭自动拖动处理
- add(new JScrollPane(text, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
- JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED));
- M1 = this.AddBar("文件", Mb);
- M2 = this.AddBar("编辑", Mb);
- M3 = this.AddBar("格式", Mb);
- M4 = this.AddBar("帮助", Mb);
- /* 新建选项 */
- m11 = this.AddItem("新建", M1);
- m11.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent event) {
- text.setText("");
- setTitle(s);
- file = null;
- }
- });
- /* 打开选项 */
- m12 = this.AddItem("打开", M1);
- m12.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent event) {
- try {
- // 设置打开时的默认目录,两种方式
- chooser = new JFileChooser("C:\\Users\\xiaozhx\\Desktop");
- // chooser.setCurrentDirectory(new File("C:\\Users\\xiaozhx\\Desktop"));
- chooser.setFileFilter(new filter());
- result = chooser.showOpenDialog(null);
- if (result == JFileChooser.APPROVE_OPTION) {
- // 点击了打开按钮
- file = chooser.getSelectedFile();
- int length = (int) file.length();
- FileReader reader = new FileReader(file);
- char[] ch = new char[length];
- reader.read(ch);
- reader.close();
- text.setText(new String(ch).trim());
- setTitle(file.getName());
- } else if (result == JFileChooser.CANCEL_OPTION) {
- // 点击了取消按钮
- }
- } catch (Exception e) {
- JOptionPane.showMessageDialog(null, e);
- }
- }
- });
- /* 保存选项 */
- m13 = this.AddItem("保存", M1);
- m13.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent event) {
- if (file == null)
- try {
- chooser = new JFileChooser(
- "C:\\Users\\xiaozhx\\Desktop");
- chooser.setFileFilter(new filter());
- result = chooser.showSaveDialog(null);
- if (result == JFileChooser.APPROVE_OPTION) {
- File selectfile = chooser.getSelectedFile(); // 获得文件名
- // 获得被选中的过滤器中的文件扩展名
- String end = chooser.getFileFilter().getDescription();
- File newFile = null;
- if (selectfile.getAbsolutePath().toUpperCase().endsWith(end.toUpperCase())) {
- // 如果文件是以选定扩展名结束的,则使用原名
- newFile = selectfile;
- } else {
- // 否则加上选定的扩展名
- newFile = new File(selectfile.getAbsolutePath()+ end);
- }
- try {
- if (newFile.exists() == false) {
- newFile.createNewFile();
- }
- FileWriter writer = new FileWriter(newFile);
- char[] arry = text.getText().toCharArray();
- writer.write(arry);
- writer.flush();
- writer.close();
- setTitle(newFile.getName());
- file = newFile;
- } catch (IOException e) {
- }
- } else if (result == JFileChooser.CANCEL_OPTION) {
- // 点击了取消按钮
- }
- } catch (Exception e) {
- JOptionPane.showMessageDialog(null, e);
- }
- else
- try {
- FileWriter writer = new FileWriter(file);
- char[] arry = text.getText().toCharArray();
- writer.write(arry);
- writer.flush();
- writer.close();
- } catch (Exception e) {
- JOptionPane.showMessageDialog(null, e);
- }
- }
- });
- /* 另存为选项 */
- m14 = this.AddItem("另存为", M1);
- m14.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent event) {
- try {
- chooser = new JFileChooser("C:\\Users\\xiaozhx\\Desktop");
- chooser.setFileFilter(new filter());
- result = chooser.showSaveDialog(null);
- if (result == JFileChooser.APPROVE_OPTION) {
- File selectfile = chooser.getSelectedFile(); // 获得文件名
- // 获得被选中的过滤器中的文件扩展名
- String end = chooser.getFileFilter().getDescription();
- File newFile = null;
- if (selectfile.getAbsolutePath().toUpperCase().endsWith(end.toUpperCase())) {
- // 如果文件是以选定扩展名结束的,则使用原名
- newFile = selectfile;
- } else {
- // 否则加上选定的扩展名
- newFile = new File(selectfile.getAbsolutePath()+ end);
- }
- try {
- if (newFile.exists() == false) {
- newFile.createNewFile();
- }
- FileWriter writer = new FileWriter(newFile);
- char[] arry = text.getText().toCharArray();
- writer.write(arry);
- writer.flush();
- writer.close();
- setTitle(newFile.getName());
- file = newFile;
- } catch (IOException e) {
- }
- } else if (result == JFileChooser.CANCEL_OPTION) {
- // 点击了取消按钮
- }
- } catch (Exception e) {
- JOptionPane.showMessageDialog(null, e);
- }
- }
- });
- M1.addSeparator(); // 横杆
- /* 退出选项 */
- m15 = this.AddItem("退出", M1);
- m15.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent event) {
- System.exit(0);
- }
- });
- /* 撤消选项 */
- m21 = this.AddItem("撤消", M2);
- m21.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent event) {
- if (manager.canUndo())
- manager.undo();
- }
- });
- /* 剪切选项 */
- M2.addSeparator();
- m22 = this.AddItem("剪切", M2);
- m22.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent event) {
- text.cut();
- }
- });
- /* 复制选项 */
- m23 = this.AddItem("复制", M2);
- m23.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent event) {
- text.copy();
- }
- });
- /* 粘贴选项 */
- m24 = this.AddItem("粘贴", M2);
- m24.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent event) {
- text.paste();
- }
- });
- /* 删除选项 */
- m25 = this.AddItem("删除", M2);
- m25.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent event) {
- text.replaceRange("", text.getSelectionStart(),
- text.getSelectionEnd());
- }
- });
- /* 自动换行选项 */
- M3.add(m31);
- m31.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent event) {
- if (m31.getState())
- text.setLineWrap(true);
- else
- text.setLineWrap(false);
- }
- });
- /* 字体格式设置选项 */
- m32 = this.AddItem("字体选择", M3);
- m32.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent event) {
- GraphicsEnvironment ge = GraphicsEnvironment
- .getLocalGraphicsEnvironment();
- //获取系统字体
- JList<String> fontNames = new JList<String>(ge.getAvailableFontFamilyNames());
- int response = JOptionPane.showConfirmDialog(null,
- new JScrollPane(fontNames), "请选择字体",
- JOptionPane.OK_CANCEL_OPTION);
- Object selectedFont = fontNames.getSelectedValue();
- if (response == JOptionPane.OK_OPTION && selectedFont != null)
- text.setFont(new Font(fontNames.getSelectedValue()
- .toString(), Font.PLAIN, 20));
- }
- });
- /* 字体颜色设置选项 */
- m33 = this.AddItem("字体颜色", M3);
- m33.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent event) {
- Color color = JColorChooser.showDialog(null, "文字颜色选择",
- Color.WHITE);
- text.setForeground(color);
- }
- });
- m41 = this.AddItem("关于记事本", M4);
- m41.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent event) {
- JOptionPane.showMessageDialog(null, "记事本\n开发语言:JAVA\n开发者:袁健强",
- "关于", JOptionPane.PLAIN_MESSAGE);
- }
- });
- }
- /** 文件格式过滤器 **/
- private class filter extends javax.swing.filechooser.FileFilter {
- public boolean accept(File file) {
- String name = file.getName();
- name.toLowerCase();
- if (name.endsWith(".txt") || file.isDirectory())
- return true;
- else
- return false;
- }
- public String getDescription() {
- return ".txt";
- }
- }
- /** 将菜单项JMenuItem添加到菜单JMenu **/
- public JMenuItem AddItem(String name, JMenu menu) {
- JMenuItem MI = new JMenuItem(name);
- menu.add(MI);
- return MI;
- }
- /** 将菜单JMenu添加到菜栏JMenuBar **/
- public JMenu AddBar(String name, JMenuBar mb) {
- JMenu Mb = new JMenu(name);
- mb.add(Mb);
- return Mb;
- }
- }