import java.awt.*;
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import java.awt.event.*;
import java.io.*;
public class Notepad /*implements ActionListener , MouseListener , MouseMotionListener , WindowListener , ItemListener , KeyListener, TextListener */
{
//成員變量
private Frame mainFrame;//主框架
private MenuBar mb ; //菜單條
private Menu mFile , mEdit , mFormat , mHelp ; //菜單：文件，編輯，格式，幫助
private MenuItem miNew , miOpen , miSave , miSaveAs , miExit ;//文件菜單項(xiàng)：新建，打開，保存，另存為，退出
private MenuItem miCut , miCopy , miPaste , miDelete ;//編輯菜單項(xiàng)：剪切，復(fù)制，粘貼，刪除
private MenuItem miFont , miLowtoCapital, miCapitaltoLow ,miEncrypt , miDisencrypt;//格式菜單項(xiàng)：字體
private MenuItem miAboutNotepad;//幫助菜單項(xiàng)：關(guān)于記事本
private TextArea ta;//文本區(qū)
private String tempString;//臨時(shí)字符串,用于存儲需要復(fù)制粘貼的字符串
private boolean textValueChanged = false;
private int id_font ;//字體
String fileName = "";//上次保存后的文件名和地址
//構(gòu)造函數(shù)
public Notepad(){
//框架
mainFrame = new Frame ("Notepad v0.99 by Launching");
mb = new MenuBar ();
ta = new TextArea (30 ,60);
ta.setFont( new Font ( "Times New Rome" , Font.PLAIN , 15));
ta.setBackground(new Color(0 , 250 , 200));
//菜單條
mFile = new Menu ( "File");
mEdit = new Menu ( "Edit");
mFormat = new Menu ("Format");
mHelp = new Menu ("Help");
//"文件"
miNew = new MenuItem ("New");
miOpen = new MenuItem ("Open");
miSave = new MenuItem ("Save");
miSaveAs = new MenuItem ("Save as");
miExit = new MenuItem ("Exit");
//"編輯"
miCut = new MenuItem ("Cut");
miCopy = new MenuItem ("Copy");
miPaste = new MenuItem ("Paste");
miDelete = new MenuItem ("Delete");
//"格式"
miFont = new MenuItem ("Font");
miLowtoCapital = new MenuItem("Low to Capital");
miCapitaltoLow = new MenuItem("Capital to Low");
miEncrypt = new MenuItem("Encrypt");
miDisencrypt = new MenuItem("Disencrypt");
//"幫助"
miAboutNotepad = new MenuItem ("About Notepad");
//添加文件菜單項(xiàng)
mFile.add(miNew);
mFile.add(miOpen);
mFile.add(miSave);
mFile.add(miSaveAs);
mFile.add(miExit);
//添加編輯菜單項(xiàng)
mEdit.add(miCut);
mEdit.add(miCopy);
mEdit.add(miPaste);
mEdit.add(miDelete);
//添加格式菜單項(xiàng)
mFormat.add(miFont);
mFormat.add(miLowtoCapital);
mFormat.add(miCapitaltoLow);
mFormat.add(miEncrypt);
mFormat.add(miDisencrypt);
//添加幫助菜單項(xiàng)
mHelp.add(miAboutNotepad);
//菜單條添加菜單
mb.add(mFile);
mb.add(mEdit);
mb.add(mFormat);
mb.add(mHelp);
//框架添加菜單條
mainFrame.setMenuBar( mb );
//初始字符串賦為空
tempString = "";
//添加文本區(qū)
mainFrame.add(ta, BorderLayout.CENTER);
mainFrame.setSize(800 , 500);
mainFrame.setLocation( 100 ,100);// 起始位置
mainFrame.setResizable(true);//不可更改大小
mainFrame.setVisible(true);
//mainFrame.pack();
//////////////////////////////////////////////////////////////////////////////////
////////////////////////////////增加監(jiān)視器////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////
//主框架
mainFrame.addWindowListener(new WindowAdapter (){ //關(guān)閉窗口
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
//文本區(qū)
ta.addKeyListener( new KeyAdapter(){
public void KeyTyped(KeyEvent e){
textValueChanged = true ; //鍵盤按鍵按下即導(dǎo)致文本修改
}
});
////////////////"文件"菜單：//////////////////////
//新建
miNew.addActionListener( new ActionListener(){
public void actionPerformed(ActionEvent e){
ta.replaceRange("", 0 , ta.getText().length()) ;//清空文本區(qū)的內(nèi)容
fileName = "";//文件名清空
}
});
//打開
miOpen.addActionListener( new ActionListener(){
public void actionPerformed(ActionEvent e) {
FileDialog d=new FileDialog(mainFrame , "open file" , FileDialog.LOAD );//打開文件對話框
d.addWindowListener( new WindowAdapter(){ //關(guān)閉文件對話框窗口
public void windowClosing(WindowEvent ee){
System.exit(0);
}
});
d.setVisible(true);
File f = new File( d.getDirectory()+d.getFile() ); //建立新文件
fileName = d.getDirectory()+d.getFile();//得到文件名
char ch[] = new char [(int)f.length()];///用此文件的長度建立一個字符數(shù)組
try//異常處理
{
//讀出數(shù)據(jù)，并存入字符數(shù)組ch中
BufferedReader bw = new BufferedReader( new FileReader(f) );
bw.read(ch);
bw.close();
}
catch( FileNotFoundException fe ){
System.out.println("file not found");
System.exit(0);
}
catch( IOException ie){
System.out.println("IO error");
System.exit(0);
}
String s =new String (ch);
ta.setText(s);//設(shè)置文本區(qū)為所打開文件的內(nèi)容
}
});
//保存
miSave.addActionListener( new ActionListener(){
public void actionPerformed(ActionEvent e) {
if( fileName.equals("") ){ //如果文件沒有被保存過,即文件名為空
FileDialog d=new FileDialog(mainFrame , "save file" , FileDialog.SAVE );//保存文件對話框
d.addWindowListener( new WindowAdapter(){ //關(guān)閉文件對話框窗口
public void windowClosing(WindowEvent ee){
System.exit(0);
}
});
d.setVisible(true);
String s = ta.getText();//得到所輸入的文本內(nèi)容
try//異常處理
{
File f = new File( d.getDirectory()+d.getFile());//新建文件
fileName = d.getDirectory()+d.getFile();//得到文件名
BufferedWriter bw = new BufferedWriter( new FileWriter (f));//輸入到文件中
bw.write(s , 0 , s.length());
bw.close();
}
catch(FileNotFoundException fe_){
System.out.println("file not found");
System.exit(0);
}
catch( IOException ie_)
{
System.out.println(" IO error");
System.exit(0);
}
}
else //如果文件已經(jīng)保存過
{
String s = ta.getText();//得到所輸入的文本內(nèi)容
try//異常處理
{
File f = new File( fileName );//新建文件
BufferedWriter bw = new BufferedWriter( new FileWriter (f));//輸入到文件中
bw.write(s , 0 , s.length());
bw.close();
}
catch(FileNotFoundException fe_){
System.out.println("file not found");
System.exit(0);
}
catch( IOException ie_)
{
System.out.println(" IO error");
System.exit(0);
}
}
}
});
//另存為
miSaveAs.addActionListener( new ActionListener(){
public void actionPerformed(ActionEvent e) {
FileDialog d=new FileDialog(mainFrame , "save file" , FileDialog.SAVE );//保存文件對話框
d.addWindowListener( new WindowAdapter(){ //關(guān)閉文件對話框窗口
public void windowClosing(WindowEvent ee){
System.exit(0);
}
});
d.setVisible(true);
String s = ta.getText();//得到所輸入的文本內(nèi)容
try//異常處理
{
File f = new File( d.getDirectory()+d.getFile());//新建文件
BufferedWriter bw = new BufferedWriter( new FileWriter (f));//輸入到文件中
bw.write(s , 0 , s.length());
bw.close();
}
catch(FileNotFoundException fe_){
System.out.println("file not found");
System.exit(0);
}
catch( IOException ie_)
{
System.out.println(" IO error");
System.exit(0);
}
}
});
//退出
miExit.addActionListener( new ActionListener(){ ///退出程序
public void actionPerformed(ActionEvent e){
System.exit(0);
}
});
////////////////"編輯"菜單：////////////////////
//剪切
miCut.addActionListener( new ActionListener(){
public void actionPerformed(ActionEvent e){
tempString = ta.getSelectedText(); ///得到要復(fù)制的內(nèi)容,暫存在tempString中
StringBuffer tmp = new StringBuffer ( ta.getText());//臨時(shí)存儲文本
int start = ta.getSelectionStart(); //得到要刪除的字符串的起始位置
int len = ta.getSelectedText().length(); //得到要刪除的字符串的長度
tmp.delete( start , start+len); ///刪除所選中的字符串
ta.setText(tmp.toString());//用新文本設(shè)置原文本
}
});
//復(fù)制
miCopy.addActionListener( new ActionListener(){
public void actionPerformed(ActionEvent e){
tempString = ta.getSelectedText(); ///得到要復(fù)制的內(nèi)容,暫存在tempString中
}
});
//粘貼
miPaste.addActionListener( new ActionListener(){
public void actionPerformed(ActionEvent e){
StringBuffer tmp = new StringBuffer ( ta.getText());//臨時(shí)存儲文本
int start = ta.getSelectionStart(); //得到要粘貼的位置
tmp.insert(start , tempString);//查入要粘貼的內(nèi)容
ta.setText(tmp.toString());//用新文本設(shè)置原文本
}
});
//刪除
miDelete.addActionListener( new ActionListener(){
public void actionPerformed(ActionEvent e){
StringBuffer tmp = new StringBuffer ( ta.getText());//臨時(shí)存儲文本
int start = ta.getSelectionStart(); //得到要刪除的字符串的起始位置
int len = ta.getSelectedText().length(); //得到要刪除的字符串的長度
tmp.delete( start , start+len); ///刪除所選中的字符串
ta.setText(tmp.toString());//用新文本設(shè)置原文本
}
});
////////////////"格式"菜單：////////////////////
//字體
miFont.addActionListener( new ActionListener(){
public void actionPerformed(ActionEvent e){
final Dialog d = new Dialog ( mainFrame , "Font");//新建對話框
d.setLocation( 250 ,250);// 起始位置
d.setLayout( new BorderLayout());//表格布局
//////////////////////////上部分面板
Label l_font = new Label ("font");//font標(biāo)簽
Panel p_1 = new Panel();
p_1.add(l_font);
p_1.setVisible(true);
//////////////////////////中部分面板
List font_list = new List (6 , false);//字體列表
//添加字體項(xiàng)目
font_list.add("Plain");///普通字體
font_list.add("Bold"); ///粗體
font_list.add("Italic");//斜體
font_list.addItemListener( new MyItemListener_font() ); //字體增加監(jiān)視器
Panel p_2 = new Panel();
p_2.add(font_list);
p_2.setVisible(true);
//////////////////////////下部分面板
Button ok = new Button ("OK");
ok.addActionListener( new ActionListener(){
public void actionPerformed(ActionEvent e){
d.dispose();
}
});
ok.setSize( new Dimension (20 , 5) );
Panel p_3 = new Panel();//下部分面板
p_3.add(ok);
p_3.setVisible(true);
//添加三個面板
d.add(p_1 , BorderLayout.NORTH);
d.add(p_2 , BorderLayout.CENTER);
d.add(p_3 , BorderLayout.SOUTH);
d.pack();
d.addWindowListener( new WindowAdapter(){ //關(guān)閉對話框窗口
public void windowClosing(WindowEvent ee){
d.dispose();
}
});
d.setVisible(true);
}
});
//小寫字母轉(zhuǎn)大寫
miLowtoCapital.addActionListener( new ActionListener(){
public void actionPerformed(ActionEvent e){
String s = ta.getText();//得到所輸入的文本內(nèi)容
StringBuffer temp = new StringBuffer("");
for(int i = 0 ; is.length() ; i++){
if((int)s.charAt(i)=97 (int)s.charAt(i)=122 ){
temp.append((char)((int)s.charAt(i)-32));
}
else
temp.append(s.charAt(i));
}
s = new String(temp);
ta.setText(s);
}
});
//大寫字母轉(zhuǎn)小寫
miCapitaltoLow.addActionListener( new ActionListener(){
public void actionPerformed(ActionEvent e){
String s = ta.getText();//得到所輸入的文本內(nèi)容
StringBuffer temp = new StringBuffer("");
for(int i = 0 ; is.length() ; i++){
if((int)s.charAt(i)=65 (int)s.charAt(i)=90 ){
temp.append((char)((int)s.charAt(i)+32));
}
else
temp.append(s.charAt(i));
}
s = new String(temp);
ta.setText(s);
}
});
//加密
miEncrypt.addActionListener( new ActionListener(){
public void actionPerformed(ActionEvent e){
String s = ta.getText();//得到所輸入的文本內(nèi)容
StringBuffer temp = new StringBuffer("");
for(int i = 0 ; is.length() ; i++){
if(s.charAt(i)=40 s.charAt(i)=125){
if(i%2==0){
temp.append((char)(s.charAt(i) + 1 ));
}
else
temp.append((char)(s.charAt(i) - 1 ));
}
else
temp.append(s.charAt(i));
}
s = new String(temp);
ta.setText(s);
}
});
//解密
miDisencrypt.addActionListener( new ActionListener(){
public void actionPerformed(ActionEvent e){
String s = ta.getText();//得到所輸入的文本內(nèi)容
StringBuffer temp = new StringBuffer("");
for(int i = 0 ; is.length() ; i++){
if(s.charAt(i)=40 s.charAt(i)=125){
if(i%2==0){
temp.append((char)(s.charAt(i) - 1 ));
}
else
temp.append((char)(s.charAt(i) + 1 ));
}
else
temp.append(s.charAt(i));
}
s = new String(temp);
ta.setText(s);
}
});
////////////////"幫助"菜單：////////////////////
//關(guān)于記事本
miAboutNotepad.addActionListener( new ActionListener(){
public void actionPerformed(ActionEvent e){
final Dialog d = new Dialog ( mainFrame , "AboutNotepad");//新建對話框
TextArea t = new TextArea("\nwelcome to use Notepad " + "\n\n" + "Copyright@Launching " + "\n\n" + "free software" + "\n\n" + "v0.99");//添加標(biāo)簽
t.setSize( new Dimension ( 5 , 5));
t.setEditable(false);
d.setResizable(false);//不可調(diào)整大小
d.add(t);
d.pack();
d.addWindowListener( new WindowAdapter(){ //關(guān)閉對話框窗口
public void windowClosing(WindowEvent ee){
d.dispose();
}
});
d.setLocation( 100 ,250);// 起始位置
d.setVisible(true);
}
});
}
class MyItemListener_font implements ItemListener { //字體監(jiān)聽器
public void itemStateChanged(ItemEvent e) {
id_font = ((java.awt.List)e.getSource()).getSelectedIndex();
switch( id_font){
case 0:{
ta.setFont(new Font("Times New Roman", Font.PLAIN ,ta.getFont().getSize()) );//普通文字
break;
}
case 1:{
ta.setFont(new Font("Times New Roman" , Font.BOLD ,ta.getFont().getSize()) );//粗體文字
break;
}
case 2:{
ta.setFont(new Font("Times New Roman" , Font.ITALIC ,ta.getFont().getSize()) );//斜體文字
break;
}
}
}
}
/////////////////////////////////////////主函數(shù)///////////////////////////////////////////////////
public static void main(String arg[]){
Notepad test = new Notepad(); ///創(chuàng)建記事本
}
//////////////////////////////////////////////////////////////////////////////////////////////////
}
import?java.awt.BorderLayout;
import?java.awt.event.ActionEvent;
import?java.awt.event.ActionListener;
import?java.io.FileReader;
import?java.io.FileWriter;
import?java.io.IOException;
import?javax.swing.JFrame;
import?javax.swing.JMenu;
import?javax.swing.JMenuBar;
import?javax.swing.JMenuItem;
import?javax.swing.JScrollPane;
import?javax.swing.JTextArea;
import?javax.swing.SwingUtilities;
public?class?MenuTester?extends?JFrame?implements?ActionListener
{
private?static?final?long?serialVersionUID?=?1L;
private?static?final?String?FILE?=?"d:/1.txt";
JTextArea?textArea;
JScrollPane?scrollPane;
public?MenuTester?()
{
setTitle?("MenuTester");
setLayout?(new?BorderLayout?());
JMenuBar?menuBar?=?new?JMenuBar?();
JMenu[]?menu?=?new?JMenu[]?{?new?JMenu?("文件"),?new?JMenu?("編輯")?};
JMenuItem[]?menuItem1?=?new?JMenuItem[]?{?new?JMenuItem?("新建"),?new?JMenuItem?("打開"),?new?JMenuItem?("保存"),?new?JMenuItem?("關(guān)閉")?};
JMenuItem[]?menuItem2?=?new?JMenuItem[]?{?new?JMenuItem?("復(fù)制"),?new?JMenuItem?("粘貼"),?new?JMenuItem?("剪切")?};
for?(?int?i?=?0;?i??menu.length;?i++?)
{
menuBar.add?(menu[i]);
}
for?(?int?i?=?0;?i??menuItem1.length;?i++?)
{
menu[0].add?(menuItem1[i]);
}
for?(?int?i?=?0;?i??menuItem2.length;?i++?)
{
menu[1].add?(menuItem2[i]);
}
menuItem1[0].addActionListener?(this);
menuItem1[1].addActionListener?(this);
menuItem1[2].addActionListener?(this);
menuItem1[3].addActionListener?(this);
setJMenuBar?(menuBar);
textArea?=?new?JTextArea?();
scrollPane?=?new?JScrollPane?(textArea);
scrollPane.setVisible?(false);
add?(scrollPane,?BorderLayout.CENTER);
setResizable?(false);
setSize?(800,?600);
setLocationRelativeTo?(null);
setDefaultCloseOperation?(JFrame.EXIT_ON_CLOSE);
setVisible?(true);
}
public?static?void?main?(?String[]?args?)
{
SwingUtilities.invokeLater?(new?Runnable?()
{
@Override
public?void?run?()
{
new?MenuTester?();
}
});
}
@Override
public?void?actionPerformed?(?ActionEvent?e?)
{
String?command?=?e.getActionCommand?();
if?("新建".equals?(command))
{
scrollPane.setVisible?(true);
validate?();
}
else?if?("關(guān)閉".equals?(command))
{
scrollPane.setVisible?(false);
textArea.setText?("");
validate?();
}
else?if?("打開".equals?(command))
{
scrollPane.setVisible?(true);
validate?();
try
{
FileReader?fr?=?new?FileReader?(FILE);
char[]?cs?=?new?char[1];
while?(-1?!=?(?fr.read?(cs)?))
{
textArea.append?(new?String?(cs));
}
fr.close?();
}
catch?(Exception?e1)
{
e1.printStackTrace?();
}
}
else?if?("保存".equals?(command))
{
try
{
FileWriter?fw?=?new?FileWriter?(FILE);
fw.write?(textArea.getText?());
fw.flush?();
fw.close?();
}
catch?(IOException?e1)
{
e1.printStackTrace();
}
}
}
}
這么說吧，其實(shí)java版的記事本就是一個JTextArea再加上一些菜單項(xiàng)，再加上查找對話框、替換對話框等。
除了在“打開”“保存”“新建”等操作時(shí)要判斷一下是否彈出“編輯文件已改變，是否保存”的對話框，別的沒多大難度吧。。。。
參考網(wǎng)址里是一個基本實(shí)現(xiàn)所有windows自帶記事本的程序，里面分ReplaceDialog.java、Notepad.java、FontDialog.java、FindDialog.java四個文件，顧名思義，共要建四個類。
你要自己實(shí)現(xiàn)的話，可以一步一步地來，慢慢加入復(fù)雜的功能。
要的話留下郵箱。
import java.awt.BorderLayout;
public class WordProcessSystem extends JFrame{
private JFileChooser chooser;
private JTextArea textArea;
private File file;
private String string = "";
private Font font;
public WordProcessSystem(){
super();
setTitle("文字處理系統(tǒng)");
setBounds(100, 100,600, 500);
getContentPane().setLayout(new BorderLayout());
getContentPane().setVisible(true);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JMenuBar menuBar = new JMenuBar();
JMenu menu = new JMenu("文件");
JMenuItem menuItem = new JMenuItem("新建");
menuItem.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
String str1 = JOptionPane.showInputDialog("請輸入新建文件名：");
try {
file = new File("E:\\", str1 + ".txt");
if(file.exists()){
JOptionPane.showMessageDialog(null, "文件名已存在！");
}
else{
file.createNewFile();
}
} catch (Exception e1) {
// TODO: handle exception
}
}
});
chooser = new JFileChooser();
chooser.setCurrentDirectory(new File("."));
JMenuItem menuItem1 = new JMenuItem("打開");
menuItem1.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
int result = chooser.showOpenDialog(null);
if(result == JFileChooser.APPROVE_OPTION){
String str = chooser.getSelectedFile().toString();
try {
file = new File(str);
readFromFile(file);
textArea.setText(string);
} catch (Exception e1) {
// TODO: handle exception
}
}
}
});
JMenuItem menuItem2 = new JMenuItem("退出");
menuItem2.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
System.exit(0);
}
});
JMenuItem menuItem3 = new JMenuItem("保存");
menuItem3.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
String string = textArea.getText();
try {
writeToFile(file, string);
} catch (Exception e1) {
// TODO: handle exception
}
}
});
menuItem3.addKeyListener(new KeyAdapter(){
public void keyPressed(KeyEvent e){
if(e.getKeyChar() == KeyEvent.VK_C){
// if(e.getKeyChar() == KeyEvent.VK_S){
String string = textArea.getText();
try {
writeToFile(file, string);
} catch (Exception e1) {
// TODO: handle exception
}
// }
}
}
});
JMenuItem menuItem4 = new JMenuItem("另存為");
menuItem4.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
String s1 = JOptionPane.showInputDialog("請輸入保存文件路徑和文件名：");
file = new File(s1);
System.out.println(file.getPath());
try {
writeToFile(file, string);
System.out.println("aaaa");
} catch (Exception e1) {
// TODO: handle exception
}
}
});
menu.add(menuItem);
menu.add(menuItem1);
menu.add(menuItem2);
menu.add(menuItem3);
menu.add(menuItem4);
JMenu menu2 = new JMenu("格式");
final JMenu menu3 = new JMenu("字體");
String []fontString = {"宋體","楷體","隸書"};
final JMenuItem []menu3_1 = new JMenuItem[fontString.length];
for(int i = 0;i fontString.length;i++){
String changeString = "";
menu3_1[i] = new JMenuItem(fontString[i]);
menu3_1[i].setActionCommand(changeString + i);
menu3_1[i].addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method
switch (e.getActionCommand().charAt(0)) {
case '0':
font = new Font("宋體",Font.PLAIN,20);
textArea.setFont(font);
break;
case '1':
font = new Font("楷體",Font.PLAIN,18);
textArea.setFont(font);
break;
case '2':
font = new Font("隸書",Font.BOLD,18);
textArea.setFont(font);
break;
default:
break;
}
}});
menu3.add(menu3_1[i]);
}
JMenu menu4 = new JMenu("字號");
String []fontBig = {"10","15","20","25","30","35","40"};
final JMenuItem []menu4_1 = new JMenuItem[fontBig.length];
for(int i = 0;i fontBig.length;i++){
String changeString = "";
menu4_1[i] = new JMenuItem(fontBig[i]);
menu4_1[i].setActionCommand(changeString + i);
menu4_1[i].addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method
switch (e.getActionCommand().charAt(0)) {
case '0':
font = new Font(menu3.getText(),Font.PLAIN,10);
textArea.setFont(font);
break;
case '1':
font = new Font(menu3.getText(),Font.PLAIN,15);
textArea.setFont(font);
break;
case '2':
font = new Font(menu3.getText(),Font.PLAIN,20);
textArea.setFont(font);
break;
case '3':
font = new Font(menu3.getText(),Font.PLAIN,25);
textArea.setFont(font);
break;
case '4':
font = new Font(menu3.getText(),Font.PLAIN,30);
textArea.setFont(font);
break;
case '5':
font = new Font(menu3.getText(),Font.PLAIN,35);
textArea.setFont(font);
break;
case '6':
font = new Font(menu3.getText(),Font.PLAIN,40);
textArea.setFont(font);
break;
default:
break;
}
}});
menu4.add(menu4_1[i]);
}
menu2.add(menu3);
menu2.add(menu4);
menuBar.add(menu);
menuBar.add(menu2);
setJMenuBar(menuBar);
textArea = new JTextArea();
textArea.setVisible(true);
// textArea.setFont(new Font("宋體",Font.BOLD,20));
add(textArea);
JScrollPane scrollPane = new JScrollPane(textArea);
scrollPane.setSize(600, 410);
scrollPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
scrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED);
add(scrollPane);
}
public void readFromFile(File f) throws IOException{
FileReader fReader = new FileReader(file);
BufferedReader bReader = new BufferedReader(fReader);
char []data = new char[10000];
int length = 0;
while((length = fReader.read(data)) 0){
string += new String(data,0,length);
}
// string = new String("");
// while(true){
// String s1 = bReader.readLine();
// if(s1 == null){
// break;
// }
// string += (s1 + "\n");
bReader.close();
fReader.close();
}
public void writeToFile(File file,String string) throws IOException{
if(!file.exists()){
file.createNewFile();
}
FileWriter fWriter = new FileWriter(file);
fWriter.write(string);
fWriter.close();
}
public static void main(String[] args) {
WordProcessSystem wordProcessSystem = new WordProcessSystem();
wordProcessSystem.setVisible(true);
}
}
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class EditorJFrame extends JFrame implements ActionListener, ItemListener, MouseListener
{
private JTextField text_size; //字號文本行
private JCheckBox checkbox_bold, checkbox_italic; //粗體、斜體復(fù)選框
private JButton button_cut, button_copy, button_paste; //剪切、復(fù)制、粘貼按鈕
private JTextArea textarea; //文本區(qū)
private JPopupMenu popupmenu; //快捷菜單
private JDialog dialog; //出錯提示對話框
private JLabel label_dialog; //對話框中的標(biāo)簽
public EditorJFrame()
{
super("文本編輯器"); //默認(rèn)BorderLayout布局
this.setSize(500,300);
this.setLocation(300,240);
this.setDefaultCloseOperation(EXIT_ON_CLOSE); //單擊窗口關(guān)閉按鈕時(shí)，結(jié)束程序運(yùn)行
textarea = new JTextArea("TextArea");
textarea.addMouseListener(this); //為文本區(qū)注冊鼠標(biāo)事件監(jiān)聽器
this.add(textarea); //文本區(qū)添加到框架的中部
JPanel panel = new JPanel(new FlowLayout(FlowLayout.LEFT)); //面板為流布局，左對齊
this.add(panel,"North"); //面板添加到框架的北部
text_size = new JTextField("12",10);
panel.add(text_size);
text_size.addActionListener(this); //注冊文本行的單擊事件監(jiān)聽器
checkbox_bold = new JCheckBox("粗體"); //復(fù)選框
panel.add(checkbox_bold);
checkbox_bold.addItemListener(this); //注冊復(fù)選框的選擇事件監(jiān)聽器
checkbox_italic = new JCheckBox("斜體");
panel.add(checkbox_italic);
checkbox_italic.addItemListener(this);
this.addmyMenu(); //調(diào)用自定義方法，添加菜單
this.setVisible(true);
}
private void addmyMenu() //添加主菜單、快捷菜單、對話框
{
JMenuBar menubar = new JMenuBar(); //菜單欄
this.setJMenuBar(menubar); //框架上添加菜單欄
JMenu menu_file = new JMenu("文件"); //菜單
menubar.add(menu_file); //菜單欄中加入菜單
menu_file.add(new JMenuItem("打開")); //生成菜單項(xiàng)并加入到菜單
menu_file.add(new JMenuItem("保存"));
menu_file.addSeparator(); //加分隔線
JMenuItem menuitem_exit = new JMenuItem("退出");
menu_file.add(menuitem_exit);
menuitem_exit.addActionListener(this); //為菜單項(xiàng)注冊單擊事件監(jiān)聽器
JMenu menu_edit = new JMenu("編輯");
menubar.add(menu_edit);
JMenu menu_style = new JMenu("字形");
menu_style.add(new JCheckBoxMenuItem("粗體")); //復(fù)選菜單項(xiàng)
menu_style.add(new JCheckBoxMenuItem("斜體"));
menu_edit.add(menu_style); //菜單加入到菜單中成為二級菜單
JMenu menu_color = new JMenu("顏色");
menu_edit.add(menu_color);
ButtonGroup buttongroup = new ButtonGroup(); //按鈕組
JRadioButtonMenuItem rbmi_red = new JRadioButtonMenuItem("紅",true); //單選菜單項(xiàng)
buttongroup.add(rbmi_red); //單選菜單項(xiàng)添加到按鈕組
menu_color.add(rbmi_red); //單選菜單項(xiàng)添加到菜單
JRadioButtonMenuItem rbmi_green = new JRadioButtonMenuItem("綠",true);
buttongroup.add(rbmi_green);
menu_color.add(rbmi_green);
JRadioButtonMenuItem rbmi_blue = new JRadioButtonMenuItem("藍(lán)",true);
buttongroup.add(rbmi_blue);
menu_color.add(rbmi_blue);
menubar.add(new JMenu("幫助"));
popupmenu = new JPopupMenu(); //彈出式菜單對象
JMenuItem menuitem_cut = new JMenuItem("剪切");
menuitem_cut.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_X,InputEvent.CTRL_MASK));//設(shè)置快捷鍵Ctrl+X
popupmenu.add(menuitem_cut); //加入剪切菜單項(xiàng)
menuitem_cut.addActionListener(this);
JMenuItem menuitem_copy = new JMenuItem("復(fù)制");
menuitem_copy.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_C,InputEvent.CTRL_MASK));//設(shè)置快捷鍵Ctrl+C
popupmenu.add(menuitem_copy);
menuitem_copy.addActionListener(this);
JMenuItem menuitem_paste = new JMenuItem("粘貼");
menuitem_paste.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_V,InputEvent.CTRL_MASK));//設(shè)置快捷鍵Ctrl+V
popupmenu.add(menuitem_paste);
menuitem_paste.addActionListener(this);
textarea.add(popupmenu); //文本區(qū)添加快捷菜單
dialog = new JDialog(this,"提示");
dialog.setSize(240,80);
label_dialog = new JLabel("",JLabel.CENTER);
dialog.add(label_dialog);
dialog.setDefaultCloseOperation(HIDE_ON_CLOSE); //單擊對話框的關(guān)閉按鈕時(shí)，隱藏對話框而不結(jié)束程序運(yùn)行
}
public void actionPerformed(ActionEvent e) //單擊事件處理程序
{
if(e.getActionCommand()=="退出") //不能用switch(int)語句
System.exit(0); //單擊菜單項(xiàng)時(shí)結(jié)束程序
if(e.getActionCommand()=="剪切")
textarea.cut(); //將選中文本剪切送系統(tǒng)剪貼板
if(e.getActionCommand()=="復(fù)制")
textarea.copy();
if(e.getActionCommand()=="粘貼")
textarea.paste();
if(e.getSource()==text_size) //單擊文本行時(shí)，改變字號
{
int size=0;
try
{
size = Integer.parseInt(text_size.getText());
if (size=0 || size72)
throw new Exception("SizeException"); //拋出異常對象
java.awt.Font font = textarea.getFont();
textarea.setFont(new Font(font.getName(),font.getStyle(),size));
}
catch(NumberFormatException nfe)
{
label_dialog.setText("\""+text_size.getText()+"\" 不能轉(zhuǎn)換成整數(shù)，請重新輸入!");
dialog.setLocation(this.getX()+100,this.getY()+100);
dialog.setVisible(true);
}
catch(Exception ex)
{
if (ex.getMessage()=="SizeException") //捕獲自己拋出的異常對象
{
label_dialog.setText(size+" 字號不合適，請重新輸入!");
dialog.setLocation(this.getX()+100,this.getY()+100);
dialog.setVisible(true);
}
}
finally{}
}
}
public void itemStateChanged(ItemEvent e) //復(fù)選框選擇事件處理程序
{ //實(shí)現(xiàn)ItemListener接口中的方法
Font font = textarea.getFont();
int style = font.getStyle();
if (e.getSource()==checkbox_bold)
style = style ^ 1; //整數(shù)的位運(yùn)算，異或^
if (e.getSource()==checkbox_italic)
style = style ^ 2;
textarea.setFont(new Font(font.getName(),style,font.getSize()));
}
public void mouseClicked(MouseEvent mec) //單擊鼠標(biāo)時(shí)觸發(fā)
{ //實(shí)現(xiàn)MouseListener接口中的方法
if (mec.getModifiers()==mec.BUTTON3_MASK) //單擊的是鼠標(biāo)右鍵
popupmenu.show(textarea,mec.getX(),mec.getY());//在鼠標(biāo)單擊處顯示快捷菜單
}
public void mousePressed(MouseEvent mep) { }
public void mouseReleased(MouseEvent mer) { }
public void mouseEntered(MouseEvent mee) { }
public void mouseExited(MouseEvent mex) { }
public void mouseDragged(MouseEvent med) { }
public static void main(String arg[])
{
new EditorJFrame();
}
}
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
public class f1 extends Frame implements ActionListener
{
private MenuBar menubar=new MenuBar();
private Menu filemenu=new Menu("文件");
private Menu editmenu=new Menu("編輯");
private Menu formmenu=new Menu("格式");
private MenuItem[] itemf=new MenuItem[4];
private MenuItem[] iteme=new MenuItem[6];
private MenuItem[] items=new MenuItem[2];
private TextArea tf=new TextArea();
public int a=0,b=0,c=0,style=Font.PLAIN,size=15;
public String s1="red:"+a+" "+"green:"+b+" "+"blue"+c,
s2="宋體";
public String[] sz1={"10","16","24","30","32","36"},
sz2={"宋體","黑體","幼圓","隸書","行楷","Arial","Georgia"},
sz3={"粗體","傾斜","常規(guī)","粗斜"};
JDialog dialog=new JDialog(this,"字體",true);
Container cp=dialog.getContentPane();
JLabel[] lb=new JLabel[8];
JLabel lb1=new JLabel(s1,JLabel.LEFT);
JButton b1=new JButton("確定"),
b2=new JButton("取消");
JComboBox jc1=new JComboBox(),
jc2=new JComboBox(),
jc3=new JComboBox();
JScrollBar jb1=new JScrollBar(JScrollBar.HORIZONTAL,10,5,0,260);
JScrollBar jb2=new JScrollBar(JScrollBar.HORIZONTAL,10,5,0,260);
JScrollBar jb3=new JScrollBar(JScrollBar.HORIZONTAL,10,5,0,260);
重慶分公司
重慶分公司
