Question

哪里有java编写的Windows记事本源码，非常感谢！！！

Answer 1

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class JNotePadUI extends JFrame {
private JMenuItem menuOpen;
private JMenuItem menuSave;
private JMenuItem menuSaveAs;
private JMenuItem menuClose;

private JMenu editMenu;
private JMenuItem menuCut;
private JMenuItem menuCopy;
private JMenuItem menuPaste;

private JMenuItem menuAbout;

private JTextArea textArea;
private JLabel stateBar;
private JFileChooser fileChooser;

private JPopupMenu popUpMenu;

public JNotePadUI() {
super("新建文本文件");
setUpUIComponent();
setUpEventListener();
setVisible(true);
}

private void setUpUIComponent() {
setSize(640, 480);

// 菜单栏
JMenuBar menuBar = new JMenuBar();

// 设置「文件」菜单
JMenu fileMenu = new JMenu("文件");
menuOpen = new JMenuItem("打开");
// 快捷键设置
menuOpen.setAccelerator(
KeyStroke.getKeyStroke(
KeyEvent.VK_O,
InputEvent.CTRL_MASK));
menuSave = new JMenuItem("保存");
menuSave.setAccelerator(
KeyStroke.getKeyStroke(
KeyEvent.VK_S,
InputEvent.CTRL_MASK));
menuSaveAs = new JMenuItem("另存为");

menuClose = new JMenuItem("关闭");
menuClose.setAccelerator(
KeyStroke.getKeyStroke(
KeyEvent.VK_Q,
InputEvent.CTRL_MASK));

fileMenu.add(menuOpen);
fileMenu.addSeparator(); // 分隔线
fileMenu.add(menuSave);
fileMenu.add(menuSaveAs);
fileMenu.addSeparator(); // 分隔线
fileMenu.add(menuClose);

// 设置「编辑」菜单
JMenu editMenu = new JMenu("编辑");
menuCut = new JMenuItem("剪切");
menuCut.setAccelerator(
KeyStroke.getKeyStroke(KeyEvent.VK_X,
InputEvent.CTRL_MASK));
menuCopy = new JMenuItem("复制");
menuCopy.setAccelerator(
KeyStroke.getKeyStroke(KeyEvent.VK_C,
InputEvent.CTRL_MASK));
menuPaste = new JMenuItem("粘贴");
menuPaste.setAccelerator(
KeyStroke.getKeyStroke(KeyEvent.VK_V,
InputEvent.CTRL_MASK));
editMenu.add(menuCut);
editMenu.add(menuCopy);
editMenu.add(menuPaste);

// 设置「关于」菜单
JMenu aboutMenu = new JMenu("关于");
menuAbout = new JMenuItem("关于JNotePad");
aboutMenu.add(menuAbout);

menuBar.add(fileMenu);
menuBar.add(editMenu);
menuBar.add(aboutMenu);

setJMenuBar(menuBar);

// 文字编辑区域
textArea = new JTextArea();
textArea.setFont(new Font("宋体", Font.PLAIN, 16));
textArea.setLineWrap(true);
JScrollPane panel = new JScrollPane(textArea,
ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED,
ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);

Container contentPane = getContentPane();
contentPane.add(panel, BorderLayout.CENTER);

// 状态栏
stateBar = new JLabel("未修改");
stateBar.setHorizontalAlignment(SwingConstants.LEFT);
stateBar.setBorder(
BorderFactory.createEtchedBorder());
contentPane.add(stateBar, BorderLayout.SOUTH);

popUpMenu = editMenu.getPopupMenu();
fileChooser = new JFileChooser();
}

private void setUpEventListener() {
// 按下窗口关闭钮事件处理
addWindowListener(
new WindowAdapter() {
public void windowClosing(WindowEvent e) {
closeFile();
}
}
);

// 菜单 - 打开
menuOpen.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent e) {
openFile();
}
}
);

// 菜单 - 保存
menuSave.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent e) {
saveFile();
}
}
);

// 菜单 - 另存为
menuSaveAs.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent e) {
saveFileAs();
}
}
);

// 菜单 - 关闭文件
menuClose.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent e) {
closeFile();
}
}
);

// 菜单 - 剪切
menuCut.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent e) {
cut();
}
}
);

// 菜单 - 复制
menuCopy.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent e) {
copy();
}
}
);

// 菜单 - 粘贴
menuPaste.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent e) {
paste();
}
}
);

// 菜单 - 关于
menuAbout.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent e) {
// 显示对话框
JOptionPane.showOptionDialog(null,
"程序名称:\n JNotePad \n" +
"程序设计:\n ???\n" +
"简介:\n 一个简单的文字编辑器\n",
"关于JNotePad",
JOptionPane.DEFAULT_OPTION,
JOptionPane.INFORMATION_MESSAGE,
null, null, null);
}
}
);

// 编辑区键盘事件
textArea.addKeyListener(
new KeyAdapter() {
public void keyTyped(KeyEvent e) {
processTextArea();
}
}
);

// 编辑区鼠标事件
textArea.addMouseListener(
new MouseAdapter() {
public void mouseReleased(MouseEvent e) {
if(e.getButton() == MouseEvent.BUTTON3)
popUpMenu.show(editMenu, e.getX(), e.getY());
}

public void mouseClicked(MouseEvent e) {
if(e.getButton() == MouseEvent.BUTTON1)
popUpMenu.setVisible(false);
}
}
);
}

private void openFile() {
if(isCurrentFileSaved()) { // 文件是否为保存状态
open(); // 打开
}
else {
// 显示对话框
int option = JOptionPane.showConfirmDialog(
null, "文件已修改，是否保存？",
"保存文件？", JOptionPane.YES_NO_OPTION,
JOptionPane.WARNING_MESSAGE, null);
switch(option) {
// 确认文件保存
case JOptionPane.YES_OPTION:
saveFile(); // 保存文件
break;
// 放弃文件保存
case JOptionPane.NO_OPTION:
open();
break;
}
}
}
private boolean isCurrentFileSaved() {
if(stateBar.getText().equals("未修改")) {
return true;
}
else {
return false;
}
}
private void open() {
// fileChooser 是 JFileChooser 的实例
// 显示文件选取的对话框
int option = fileChooser.showDialog(null, null);

// 使用者按下确认键
if(option == JFileChooser.APPROVE_OPTION) {
/*
TODO: 添加读取文件的代码
*/
}
}
private void saveFile() {
/*
TODO: 添加保存文件的代码
*/
}

private void saveFileAs() {
/*
TODO: 添加另存为的代码
*/
}

private void closeFile() {
// 是否已保存文件
if(isCurrentFileSaved()) {
// 释放窗口资源，而后关闭程序
dispose();
}
else {
int option = JOptionPane.showConfirmDialog(
null, "文件已修改，是否保存？",
"保存文件？", JOptionPane.YES_NO_OPTION,
JOptionPane.WARNING_MESSAGE, null);

switch(option) {
case JOptionPane.YES_OPTION:
saveFile();
break;
case JOptionPane.NO_OPTION:
dispose();
}
}
}

private void cut() {
textArea.cut();
stateBar.setText("已修改");
popUpMenu.setVisible(false);
}

private void copy() {
textArea.copy();
popUpMenu.setVisible(false);
}

private void paste() {
textArea.paste();
stateBar.setText("已修改");
popUpMenu.setVisible(false);
}

private void processTextArea() {
stateBar.setText("已修改");
}

public static void main(String[] args) {
new JNotePadUI();
}
}

Answer 2

我手上就有.下面就是.我添加了快捷键部分!
package cn.com.sunboon.cis.test;
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import javax.swing.event.*;
import java.util.*; //Date needed
import java.io.PrintWriter;
public class NotePad extends JFrame
{
private static final long serialVersionUID = 1L;

JTextArea jta = new JTextArea();
JFileChooser jfc = new JFileChooser();
//新建TEXT的监听
class newText implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
jta.setText("");
}
}

class open implements ActionListener
{ public void actionPerformed(ActionEvent e)
{
jfc.showOpenDialog(NotePad.this);

}

}
//保存文件的监听
class save implements ActionListener
{
public void actionPerformed(ActionEvent e)
{

jfc.showSaveDialog(NotePad.this);

}
}

//退出记事本的监听
class exitl implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
System.exit(0);//退出
}
}

//拷贝的监听
class copyl implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
jta.copy();
}
}

//粘贴的监听
class pastel implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
jta.paste();
}
}
//剪切的监听
class cutl implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
jta.cut();
}
}
//查找的监听

//添加日期的监听
class datel implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
Date d=new Date();
jta.append(d.toString());
}
}

//构造函数
public NotePad()
{
//构造具有指定文本、行数和列数的新的TextArea
jta=new JTextArea("",24,40);
//创建视图
JScrollPane jsp=new JScrollPane(jta);
//创建新的菜单栏。
JMenuBar jmb=new JMenuBar();
//按钮
JMenu mFile=new JMenu("File");
JMenu mEdit=new JMenu("Edit");
//增加一个菜单项.设置快捷键‘CTRL+N’.
JMenuItem mNew=new JMenuItem("New File",KeyEvent.VK_N);
//将“Ctrl+N”设置为菜单项加速器的代码
mNew.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_N, InputEvent.CTRL_MASK));
mNew.addActionListener(new newText());
mFile.add(mNew);
//增加一个菜单项.设置快捷键‘CTRL+O'.
JMenuItem mOpen=new JMenuItem("Open File",KeyEvent.VK_O);
//将“Ctrl+O”设置为菜单项加速器的代码
mOpen.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_O, InputEvent.CTRL_MASK));
mOpen.addActionListener(new open());
mFile.add(mOpen);
//增加一个菜单项.设置快捷键‘CTRL+S'.
JMenuItem mSave=new JMenuItem("Save",KeyEvent.VK_S);
//将“Ctrl+S”设置为菜单项加速器的代码
mSave.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S, InputEvent.CTRL_MASK));
mSave.addActionListener(new save());
mFile.add(mSave);
//增加一个菜单项.设置快捷键‘CTRL+Q'.
JMenuItem mExit=new JMenuItem("Exit",KeyEvent.VK_Q);
//将“Ctrl+Q”设置为菜单项加速器的代码
mExit.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_Q, InputEvent.CTRL_MASK));
mExit.addActionListener(new exitl());
mFile.add(mExit);
mFile.setMnemonic(KeyEvent.VK_F);

//编辑菜单的子菜单的处理
// 同样这下面的COPY, CUT ,PASTE, Find, FindNext ,Select All,都可以给他快捷键和加速器

JMenuItem jmi;
jmi=new JMenuItem("Copy",KeyEvent.VK_C);
jmi.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_C, InputEvent.CTRL_MASK));
jmi.addActionListener(new copyl());
mEdit.add(jmi);

jmi=new JMenuItem("Cut");
jmi.addActionListener(new cutl());
mEdit.add(jmi);

jmi=new JMenuItem("Paste");
jmi.addActionListener(new pastel());
mEdit.add(jmi);

mEdit.addSeparator(); //添加分割线

jmi=new JMenuItem("Find");
mEdit.add(jmi);
jmi=new JMenuItem("FindNext");
mEdit.add(jmi);
mEdit.addSeparator();
jmi=new JMenuItem("Select All");
mEdit.add(jmi);
jmi=new JMenuItem("Date/Time");
jmi.addActionListener(new datel());
mEdit.add(jmi);

jmb.add(mFile);
jmb.add(mEdit);
//将组件添加到菜单栏
this.setJMenuBar(jmb);
//this.getContentPane()的作用是初始化一个容器，用来在容器上添加一些控件。。。
this.getContentPane().add(jsp);
//设置窗体大小
this.setSize(200,200);
//显示
this.setVisible(true);
}
//主函数，程序入口点
public static void main(String s[])
{
new NotePad();
}

}

Answer 3

//如果需要请Call 我 一个月以前做的~！基本能够满足你 QQ136748325

Answer 4

Are you come from Tarena?Oh NO!……