用Java程序编写一个记事本程序的设计报告

用Java程序编写一个记事本程序的

设计报告

学习中心（点）：泾阳学习中心

专业：计算机科学与技术

层次：专升本

姓名：李永固

批次： 112

目录

一、设计分析 (1)

二、程序结构 (1)

三、各模块的功能及程序说明 (2)

1、类设计 (2)

2、主要功能代码实现 (4)

四、源程序 (9)

五、操作方法 (20)

六、试验结果 (20)

七、设计体会 (22)

用Java程序编写一个记事本程序的设计报告

一、设计要求

1.用图形用户界面实现。

2.能实现编辑、保存、另存为、查找替换等功能。

二、程序结构

流程图：

图1基本流程图

本Java文本编辑器功能设计如下：

图2基本功能图

三、各模块的功能及程序说明

1、类设计

（1）类MiniText ，包括initTextPane方法初始化面板，initMenu()方法初始化菜单，initAboutDialog()方法初始化关于对话框，initToolBar()方法初始化工具栏，initRightKey()方法初始化右键设置，等方法。类成员如下:

（2）类Loading （实现登陆）类成员如下：

（3）类runtime （实现时间同步）

类成员如下：

（4）类MainFunction （包含主函数）

类成员如下：

2、主要功能代码实现

(1)登陆界面:

class Loading extends JWindow implements Runnable {

Thread dluThread=null;

private JProgressBar progress;

public Loading() {

setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));//设置光标为等待状态JPanel dlu = new JPanel(new BorderLayout());

URL url = getClass().getResource("/images/loading.jpg");

if(url != null){

dlu.add(new JButton(new ImageIcon(url)), BorderLayout.CENTER);

}

progress = new JProgressBar(1,100);

progress.setStringPainted(true);

progress.setBorderPainted(true);

progress.setBackground(Color.white);

progress.setForeground(Color.green);

dlu.add(progress,BorderLayout.SOUTH);

setContentPane(dlu); //设置窗口属性为登陆面板属性

Dimension screen = getToolkit().getScreenSize();

pack(); //显示登陆界面

setLocation(screen.width/4,screen.height/4); //设置登陆界面始终在屏幕中间显示

}

public void start(){

// this.toFront();

dluThread=new Thread(this);

dluThread.start(); }

public void run(){

show();

try {

for (int i=0;i<100;i++){

Thread.sleep(100);

progress.setValue(progress.getValue() + 1);

progress.setString("欢迎进入迷你编辑，请稍后... ... "+i+"%"); } }

catch (Exception ex) {

ex.printStackTrace(); }

dispose();//关闭登陆界面} }

(2).时间标签:

class runtime extends JButton implements Runnable{

Thread datetime=null;

public runtime(){}

public void run(){

for(;;){

//java.util.Date timeer=new java.util.Date();

Calendar now=Calendar.getInstance();

int year1=now.get(Calendar.YEAR);

int month1=now.get(Calendar.MONTH);

int day1=now.get(Calendar.DAY_OF_MONTH);

int hour1=now.get(Calendar.HOUR);

int minute1=now.get(Calendar.MINUTE);

int sec=now.get(Calendar.SECOND);

setText(year1+"年"+month1+"月"+day1+"日"+hour1+":"+minute1+":"+sec);

//System.out.println(now.get(Calendar.DAY_OF_MONTH)-60);

try{

Thread.currentThread().sleep(1000);

}catch(InterruptedException e){} } }}

（3）右键的实现：

void initRightKey (){

filepopup=new JPopupMenu();

uundo=new JMenuItem("撤消(U)");

uundo.setMnemonic('U');

ccut=new JMenuItem("剪切(T)");

ccut.setMnemonic('T');

ccopy=new JMenuItem("复制(C)");

ccopy.setMnemonic('C');

ppaste=new JMenuItem("粘贴(V)");

ppaste.setMnemonic('V');

ddelete=new JMenuItem("删除(D)");

ddelete.setMnemonic('D');

sselectall=new JMenuItem("全选(A)");

sselectall.setMnemonic('A');

filepopup.add(uundo);

filepopup.addSeparator();

filepopup.add(ccut);

filepopup.add(ccopy);

filepopup.add(ppaste);

filepopup.add(ddelete);

filepopup.addSeparator();

filepopup.add(sselectall);

uundo.addActionListener(action);

ccut.addActionListener(action);

ccopy.addActionListener(action);

ppaste.addActionListener(action);

ddelete.addActionListener(action);

sselectall.addActionListener(action);

text.addMouseListener(new MouseAdapter(){

public void mousePressed(MouseEvent event){

checkForTriggerEvent(event);

}

public void mouseReleased(MouseEvent event){

checkForTriggerEvent(event);

}public void checkForTriggerEvent(MouseEvent event){

if(event.isPopupTrigger()){

filepopup.show(event.getComponent(),event.getX(),event.getY());

} }}); }

（4）打开、保存、复制、粘贴、撤销等功能事件响应实现：

//事件处理

ActionListener action = new ActionListener()

{

public void actionPerformed(ActionEvent e)

{ JMenuItem mi = (JMenuItem)e.getSource();

String id = mi.getText();

if(id.equals("新建")){

Date date=new Date();

text.setText(date.toString());

file = null;

}else if(id.equals("打开...")){

if(file != null)

filechooser.setSelectedFile(file);//为用户选择文件提供了一种简单的机制

int returnVal = filechooser.showOpenDialog(MiniText.this);

if(returnVal == JFileChooser.APPROVE_OPTION){

file = filechooser.getSelectedFile();

openFile(); } }

else if(id.equals("保存...")){

if(file != null)

filechooser.setSelectedFile(file);

int returnVal = filechooser.showSaveDialog(MiniText.this);

if(returnVal == JFileChooser.APPROVE_OPTION){

file = filechooser.getSelectedFile();

saveFile();

JOptionPane.showMessageDialog(null,"已保存");

}}

else if(id.equals("另存为")){

if(file != null)

filechooser.setSelectedFile(file);

int returnVal = filechooser.showSaveDialog(MiniText.this);

if(returnVal == JFileChooser.APPROVE_OPTION){

file = filechooser.getSelectedFile();

saveFile();

JOptionPane.showMessageDialog(null,"已保存"); } } else if(id.equals("打印")){

prt.printDialog();

}

else if(id.equals("打印页面设置")){

try {

prt.print();

} catch(Exception ew){

JOptionPane.showMessageDialog(null,"打印出错!","错误",JOptionPane.ERROR_MESSAGE);} }

else if(id.equals("退出")){ System.exit(0); }else if(id.equals("剪切")||id.equals("剪切(T)")){ text.cut();

}else if(id.equals("复制")||id.equals("复制(C)")){

text.copy();

}else if(id.equals("粘贴")||id.equals("粘贴(V)")){

text.paste(); }

else if(id.equals("删除")||id.equals("删除(D)")){

text.replaceSelection(""); }

else if(id.equals("选择全部")||id.equals("全选(A)")){

text.selectAll();

}else if(id.equals("字体颜色...")){

color = JColorChooser.showDialog(MiniText.this,"字体颜色设置",color);

text.setForeground(color);

} else if(id.equals("自动换行")){ }

else if(id.equals("撤销")||id.equals("撤消(U)")){

text.setText("");

text.selectAll();

}

else if(id.equals("查找")){

String find="查找";

find=JOptionPane.showInputDialog("查找:"); }

else if(id.equals("时间")){

time.setFont(new Font("Times New Roman",Font.PLAIN,12));

text.insertComponent(time); }

else if(id.equals("系统记事本")){

try{

String command = "notepad.exe";

Process child = Runtime.getRuntime().exec(command);//从系统进程中调用记事本}

catch (IOException ex) { }

}else if(id.equals("系统计算器")){

try{

String command = "calc.exe";

Process child = Runtime.getRuntime().exec(command);//调用系统计算器}

catch (IOException ex) { }

}else if(id.equals("关于")){

about.setSize(250,150);

about.show();

} } };

四、源程序

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

import java.io.*;

public class Notepad extends JFrame {

// 系统组件声明

private JMenuBar menuBar = new JMenuBar();

private JEditorPane content = new JEditorPane();

private JScrollPane scroll = new JScrollPane(content);

private JFileChooser filechooser = new JFileChooser() ;

private BorderLayout bord = new BorderLayout();

private JLabel statusBar = new JLabel();

private JPanel pane = new JPanel();

private File file = null;

// 定义文件菜单

private JMenu fileMenu = new JMenu();

private JMenuItem newMenuItem = new JMenuItem();

private JMenuItem openMenuItem = new JMenuItem();

private JMenuItem saveMenuItem = new JMenuItem();

private JMenuItem saveAsMenuItem = new JMenuItem();

private JMenuItem pageSetupMenuItem = new JMenuItem();

private JMenuItem printMenuItem = new JMenuItem();

private JMenuItem exitMenuItem = new JMenuItem();

// 定义风格菜单

private JMenu styleMenu = new JMenu();

private ButtonGroup styleMenuGroup = new ButtonGroup();

private JRadioButtonMenuItem javaStyleMenuItem = new JRadioButtonMenuItem(); private JRadioButtonMenuItem metalStyleMenuItem = new JRadioButtonMenuItem(); private JRadioButtonMenuItem windowsStyleMenuItem = new JRadioButtonMenuItem();

// 定义帮助菜单

private JMenuItem aboutMenuItem = new JMenuItem();

private JMenuItem helpTopicMenuItem = new JMenuItem();

private JMenu helpMenu = new JMenu();

// 构造函数

public Notepad(){

initComponents();

}

private void initComponents(){

// 添加子菜单项到文件菜单

fileMenu.setText("\u6587\u4ef6 (F)");

newMenuItem.setText("新建(N)Ctrl+N");

openMenuItem.setText("打开(O)...Ctrl+O");

saveMenuItem.setText("保存(S)Ctrl+S");

saveAsMenuItem.setText("另存为(A)...");

pageSetupMenuItem.setText("页面设置(U)...");

printMenuItem.setText("打印(P)...Ctrl+P");

exitMenuItem.setText("退出");

fileMenu.add(newMenuItem);

fileMenu.add(openMenuItem);

fileMenu.add(saveMenuItem);

fileMenu.add(saveAsMenuItem);

fileMenu.addSeparator();

fileMenu.add(pageSetupMenuItem);

fileMenu.add(printMenuItem);

fileMenu.addSeparator();

fileMenu.add(exitMenuItem);

// 添加子菜单项到风格菜单

styleMenu.setText("风格(S)");

javaStyleMenuItem.setText("Java默认");

metalStyleMenuItem.setText("Metal风格");

windowsStyleMenuItem.setText("Windows风格");

styleMenuGroup.add(javaStyleMenuItem);

styleMenuGroup.add(metalStyleMenuItem);

styleMenuGroup.add(windowsStyleMenuItem);

styleMenu.add(javaStyleMenuItem);

styleMenu.add(metalStyleMenuItem);

styleMenu.add(windowsStyleMenuItem);

// 添加子菜单项到帮助菜单

helpMenu.setText("帮助(H)");

helpTopicMenuItem.setText("帮助主题(H)");

aboutMenuItem.setText("关于记事本(A)");

helpMenu.add(helpTopicMenuItem);

helpMenu.addSeparator();

helpMenu.add(aboutMenuItem);

// 定义文件菜单下的事件监听

newMenuItem.addActionListener(new newMenuItem_actionAdapter(this)); openMenuItem.addActionListener(new openMenuItem_actionAdapter(this)); saveMenuItem.addActionListener(new saveMenuItem_actionAdapter(this)); saveAsMenuItem.addActionListener(new saveAsMenuItem_actionAdapter(this)); pageSetupMenuItem.addActionListener(new pageSetupMenuItem_actionAdapter(this)); printMenuItem.addActionListener(new printMenuItem_actionAdapter(this)); exitMenuItem.addActionListener(new exitMenuItem_actionAdapter(this));

// 定义风格菜单下的事件监听

javaStyleMenuItem.addActionListener(new javaStyleMenuItem_actionAdapter(this)); metalStyleMenuItem.addActionListener(new metalStyleMenuItem_actionAdapter(this)); windowsStyleMenuItem.addActionListener(new windowsStyleMenuItem_actionAdapter(this));

// 定义帮助菜单下的事件监听

helpTopicMenuItem.addActionListener(new helpTopicMenuItem_actionAdapter(this));

aboutMenuItem.addActionListener(new aboutMenuItem_actionAdapter(this));

// 填加菜单到菜单栏

menuBar.add(fileMenu);

menuBar.add(styleMenu);

menuBar.add(helpMenu);

// 对主窗口的一些设置

this.setDefaultCloseOperation(EXIT_ON_CLOSE);

this.setTitle("无标题- \u8bb0\u4e8b\u672c");

this.setSize(640,480);

setJMenuBar(menuBar);

pane.setLayout(bord);

pane.add("Center",scroll);

setContentPane(pane);

}

// 定义新建菜单项方法

public void newMenuItemActionPerformed(ActionEvent evt){

file = null;

if(!("".equals(content.getText()))){

Object[] options = { "是(Y)", "否(N)","取消" };

int s = JOptionPane.showOptionDialog(null, "\u6587\u4ef6 "+getTitle()+" \u7684\u6587\u5b57\u5df2\u7ecf\u6539\u53d8\u3002\n\u60f3\u4fdd\u5b58\u6587\u4ef6\u5417\uff 1f", "\u8bb0\u4e8b\u672c",

JOptionPane.DEFAULT_OPTION, JOptionPane.WARNING_MESSAGE,

null, options, options[0]);

switch(s){

case 0:

int returnV al=filechooser.showSaveDialog(this);

if(returnV al == JFileChooser.APPROVE_OPTION) {

file=filechooser.getSelectedFile();

try{

FileWriter fw=new FileWriter(file);

fw.write(content.getText());

setTitle(filechooser.getSelectedFile().getName()+" - \u8bb0\u4e8b\u672c");

fw.close();

}

catch(Exception e){

e.printStackTrace();

}

break;

}

case 1:

content.setText("");

setTitle("无标题- \u8bb0\u4e8b\u672c");

}

}

}

// 定义打开菜单项方法

public void openMenuItemActionPerformed(ActionEvent evt){

try {

file = null;

int returnV al = filechooser.showOpenDialog(this);

if(returnV al == JFileChooser.APPROVE_OPTION){

file = filechooser.getSelectedFile();

FileReader fr = new FileReader(file);

int len = (int)file.length();

char[] buffer = new char[len];

fr.read(buffer,0,len);

fr.close();

content.setText(new String(buffer));

}

}

catch(Exception e){

e.printStackTrace();

}

}

// 定义退出菜单项方法

public void exitMenuItem_actionPerformed(ActionEvent e){

if(!("".equals(content.getText()))){

Object[] options = { "是(Y)", "否(N)","取消" };

int s = JOptionPane.showOptionDialog(null, "文件的文字已经改变。\n想保存文件吗？", "\u8bb0\u4e8b\u672c",

JOptionPane.DEFAULT_OPTION, JOptionPane.WARNING_MESSAGE,

null, options, options[0]);

switch(s){

case 0:

int returnV al=filechooser.showSaveDialog(this);

if(returnV al == JFileChooser.APPROVE_OPTION) {

file=filechooser.getSelectedFile();

try{

FileWriter fw=new FileWriter(file);

fw.write(content.getText());

setTitle(filechooser.getSelectedFile().getName()+" - \u8bb0\u4e8b\u672c");

fw.close();

}

catch(Exception ex){

ex.printStackTrace();

}

break;

}

case 1:

System.exit(0);

}

}

else{

System.exit(0);

}

}

// 保存事件

public void saveMenuItemActionPerformed(ActionEvent evt){

int returnV al=filechooser.showSaveDialog(this);

if(returnV al == JFileChooser.APPROVE_OPTION) {

file=filechooser.getSelectedFile();

try{

FileWriter fw=new FileWriter(file);

fw.write(content.getText());

setTitle(filechooser.getSelectedFile().getName()+" - \u8bb0\u4e8b\u672c");

fw.close();

}

catch(Exception e){

e.printStackTrace();

}

}

}

// 另存为事件

public void saveAsMenuItemActionPerformed(ActionEvent evt){ filechooser.setDialogTitle("另存为...");

int returnV al = filechooser.showSaveDialog(this);

if(returnV al == JFileChooser.APPROVE_OPTION) {

file=filechooser.getSelectedFile();

try{

FileWriter fw=new FileWriter(file);

fw.write(content.getText());

setTitle(filechooser.getSelectedFile().getName()+" - \u8bb0\u4e8b\u672c");

fw.close();

}

catch(Exception e){

e.printStackTrace();

}

}

}

// 页面设置事件

public void pageSetupMenuItemActionPerformed(ActionEvent evt){ JOptionPane.showMessageDialog(null,"此功能正在开发中...");

}

// 打印事件

public void printMenuItemActionPerformed(ActionEvent evt){ JOptionPane.showMessageDialog(null,"打印中...");

}

// 更新风格外观方法

void changeLookFeel(String className) {

try {

UIManager.setLookAndFeel(className);

}

catch (Exception e) {

System.out.println(e);

}

SwingUtilities.updateComponentTreeUI(this);

}

// Java风格事件

public void javaStyleMenuItemActionPerformed(ActionEvent evt){ changeLookFeel("javax.swing.plaf.metal.MetalLookAndFeel");

}

// Motif风格事件

public void metalStyleMenuItemActionPerformed(ActionEvent evt){ changeLookFeel("com.sun.java.swing.plaf.motif.MotifLookAndFeel"); }

// MAC风格事件

public void windowsStyleMenuItemActionPerformed(ActionEvent evt){

changeLookFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");

}

// 帮助事件

public void helpTopicMenuItemActionPerformed(ActionEvent evt){

JOptionPane.showMessageDialog(null,"\u9700\u8981\u5e2e\u52a9\u5417\uff1f");

}

// 关于事件

public void aboutMenuItemActionPerformed(ActionEvent evt){

JOptionPane.showMessageDialog(null,"\n\u7a0b\u5e8f\u540d\u79f0\uff1aJava

\u8bb0\u4e8b\u672c\n\u4ee3\u7801\u7f16\u5199\uff1aCavien\n\u4f5c\u8005\u7f51\u7ad9\uff1ahttp :/https://www.360docs.net/doc/308577109.html,\nE-mail\u3000\uff1aCavien@https://www.360docs.net/doc/308577109.html,");

}

// 主函数

public static void main(String args[]) {

Notepad notepad = new Notepad();

notepad.setVisible(true);

}

}

// 定义新建事件类

class newMenuItem_actionAdapter implements ActionListener{

Notepad adaptee;

newMenuItem_actionAdapter(Notepad adaptee){

this.adaptee = adaptee;

}

public void actionPerformed(ActionEvent evt){

adaptee.newMenuItemActionPerformed(evt);

}

}

// 定义打开事件类

class openMenuItem_actionAdapter implements ActionListener{

Notepad adaptee;

openMenuItem_actionAdapter(Notepad adaptee){

this.adaptee = adaptee;

}

public void actionPerformed(ActionEvent evt){

adaptee.openMenuItemActionPerformed(evt);

}

}

// 定义保存事件类

class saveMenuItem_actionAdapter implements ActionListener{ Notepad adaptee;

saveMenuItem_actionAdapter(Notepad adaptee){

this.adaptee = adaptee;

}

public void actionPerformed(ActionEvent evt){

adaptee.saveMenuItemActionPerformed(evt);

}

}

// 定义另存为事件类

class saveAsMenuItem_actionAdapter implements ActionListener{ Notepad adaptee;

saveAsMenuItem_actionAdapter(Notepad adaptee){

this.adaptee = adaptee;

}

public void actionPerformed(ActionEvent evt){

adaptee.saveAsMenuItemActionPerformed(evt);

}

}

// 定义页面设置事件类

class pageSetupMenuItem_actionAdapter implements ActionListener{ Notepad adaptee;

pageSetupMenuItem_actionAdapter(Notepad adaptee){

this.adaptee = adaptee;

}

public void actionPerformed(ActionEvent evt){

adaptee.pageSetupMenuItemActionPerformed(evt);

}

}

// 定义打印事件类

class printMenuItem_actionAdapter implements ActionListener{ Notepad adaptee;

printMenuItem_actionAdapter(Notepad adaptee){

this.adaptee = adaptee;

}

public void actionPerformed(ActionEvent evt){

adaptee.printMenuItemActionPerformed(evt);

}

}

// 定义Java风格事件类

class javaStyleMenuItem_actionAdapter implements ActionListener{ Notepad adaptee;

javaStyleMenuItem_actionAdapter(Notepad adaptee){

this.adaptee = adaptee;

}

public void actionPerformed(ActionEvent evt){

adaptee.javaStyleMenuItemActionPerformed(evt);

}

}

// 定义Java风格事件类

class metalStyleMenuItem_actionAdapter implements ActionListener{ Notepad adaptee;

metalStyleMenuItem_actionAdapter(Notepad adaptee){

this.adaptee = adaptee;

}

public void actionPerformed(ActionEvent evt){

adaptee.metalStyleMenuItemActionPerformed(evt);

}

}

// 定义Java风格事件类

class windowsStyleMenuItem_actionAdapter implements ActionListener{ Notepad adaptee;

windowsStyleMenuItem_actionAdapter(Notepad adaptee){

this.adaptee = adaptee;

}

public void actionPerformed(ActionEvent evt){

adaptee.windowsStyleMenuItemActionPerformed(evt);