记事本代码

如下：

package 记事本;

import java.awt.BorderLayout;

import java.awt.Color;

import java.awt.FlowLayout;

import java.awt.Font;

import java.awt.Frame;

import java.awt.GraphicsEnvironment;

import java.awt.Rectangle;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.ItemEvent;

import java.awt.event.ItemListener;

import java.awt.event.KeyAdapter;

import java.awt.event.KeyEvent;

import java.awt.event.KeyListener;

import java.awt.event.MouseAdapter;

import java.awt.event.MouseEvent;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileReader;

import java.io.FileWriter;

import java.io.IOException;

import java.io.Reader;

import java.io.Writer;

import java.nio.CharBuffer;

import java.text.SimpleDateFormat;

import java.util.Calendar;

import java.util.Date;

import java.util.Timer;

import java.util.TimerTask;

import java.util.Vector;

import java.util.regex.Pattern;

import javax.swing.BorderFactory;

import javax.swing.JButton;

import javax.swing.JComboBox;

import javax.swing.JDialog;

import javax.swing.JFileChooser;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JMenu;

import javax.swing.JMenuBar;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JSplitPane;

import javax.swing.JTabbedPane;

import javax.swing.JTextArea;

import javax.swing.JTextField;

import javax.swing.event.CaretEvent;

import javax.swing.event.CaretListener;

import javax.swing.event.UndoableEditEvent;

import javax.swing.event.UndoableEditListener;

import javax.swing.undo.UndoManager;

public class Notepad implements ActionListener {

String time; //当前时间的字符串形式

int frameSum=1; //记事本框架上的框架总数

int fontSizeNum=20; //代表字体尺寸的数字

int fontStyle=Font.CENTER_BASELINE; //代表字体风格的常量

String fontTypefaceNum="华文行楷"; //代表字体的字体值的字符串

String fontColorNum="black"; //代表字体颜色值得字符串

File inOutFile; //记事本的输入输出文件

File attributeFile; //记事本的属性的文件

Font font=null; //记事本文本框的显示字体对象

JFrame frame; //记事本主要框架

JTextArea textArea; //记事本文本域添加在滚动条面板中

JSplitPane splitPane; //记事本主体面板分割型面板

JTabbedPane tabbedPane; //记事本分割面板的上部分

JPanel lowerPanel; //记事本分割面板的下部分

JScrollPane scrollPane; //滚动条面板添加在分割面板的下部分中的中区域

JPanel panelOption; //普通面板添加在选项卡面板中的第一个选项中

JPanel panelFont; //普通面板添加在选项卡面板中的第二个选项中

JPanel panelUndo; //普通面板添加在选项卡面板中的第三个选项中

JPanel statePanel; //状态面板添加在分割面板的下部分中的南区域

JLabel wordNumber; //字数标签

JLabel lineRowLabel; //显示行列的标签

JLabel fontSizeNumLabel; //显示字体大小值的标签

JLabel fontColorNumLabel; //显示字体颜色值的标签

JLabel fontTypefaceNumLabel; //显示字体的字体的标签

JLabel timeLabel; //时间标签

UndoManager um; //撤销管理器

JButton newWindow; //按钮新窗口

JButton createNewTxt; //按钮创建新文本

JButton openFile; //按钮打开文本文件

JButton saveFile; //按钮保存文件

JButton preservationFile; //按钮另存为其他文件

JButton revoke; //按钮撤销

JButton recovery; //恢复

JButton fontColor; //按钮设置字体颜色

JButton fontSize; //按钮设置字体尺寸大小

JButton fontTypeface; //按钮设置字体的字体

static int notepadFrameSum=0; //记事本框架总数

static String[] fonts=null; //本机所有可用字体

static String[] colors= {"black","blue","cyan","darkGray","gray","green","lightGray","magenta","orange","pink","red","white"}; //所有可使用的字体颜色

// static String[] fontSizeNums= {"1","5","10","20","25","30","35","36","37","38","39","40","41","42","43","44","45","50"};

static String parentsPath="C:"+File.separator+"Users"+File.separator+"ASUS"+File.separator+"Desktop"+File.separator+"java作业"+File.separator+"记事本"; //记事本用来保存内容的父路径

static String attributePath="C:"+File.separator+"Users"+File.separator+"ASUS"+File.separator+"Desktop"+File.separator+"java作业"+File.separator+"记事本属性";//记事本用来保存文本属性的父路径

public Notepad() { //构造方法

notepadFrameSum++; //每创建一个新的Notepad类，记事本框架数加一

getNativeFont(); //获得本机全部可用字体

notepad(); //记事本初始化方法

}

public String[] getNativeFont() { //得到本机所有可用字体

if(Notepad.fonts==null) {

GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();

Notepad.fonts=ge.getAvailableFontFamilyNames();

}

return Notepad.fonts;

}

public void notepad() { //记事本主体方法

this.frame=new JFrame("记事本");

this.textArea=new JTextArea(inputFile()); //设置文本域中的的文本为输入文件内保存的内容

//面板

this.tabbedPane=new JTabbedPane(JTabbedPane.TOP); //选项卡面板，置顶分布选项卡

this.lowerPanel=new JPanel(new BorderLayout()); //普通面板采用区域布局

this.splitPane=new JSplitPane(JSplitPane.VERTICAL_SPLIT,true,tabbedPane,lowerPanel); //分隔面板，垂直分割，分隔条改变时重画分隔条两端，上部分选项卡面板，下部分为简单面板

this.statePanel=new JPanel(); //普通面板显示状态

this.scrollPane=new JScrollPane(textArea); //滚动条面板，给文本域设置滚动条

this.panelOption=new JPanel(new FlowLayout(FlowLayout.LEFT)); //选项面板，对齐方式为左对齐

this.panelFont=new JPanel(new FlowLayout(FlowLayout.LEFT)); //字体面板，对齐方式为左对齐

this.panelUndo=new JPanel(new FlowLayout(FlowLayout.LEFT)); //撤销面板，对齐方式为左对齐

//字体

this.font=new Font(this.fontTypefaceNum, this.fontStyle, this.fontSizeNum); //字体初始化

//标签

this.timeLabel=new JLabel("");

this.wordNumber=new JLabel("");

this.lineRowLabel=new JLabel("未知");

this.fontSizeNumLabel=new JLabel("字体大小:"+this.fontSizeNum);

this.fontColorNumLabel=new JLabel("字体颜色:"+this.fontColorNum);

this.fontTypefaceNumLabel=new JLabel("字体:"+this.fontTypefaceNum);

//全部按钮

this.newWindow=new JButton("新窗口(N)");

this.createNewTxt=new JButton("新建(C)");

this.openFile=new JButton("打开(O)");

this.saveFile=new JButton("保存(S)");

this.preservationFile=new JButton("另存为(p)");

this.revoke=new JButton("撤销(Z)");

this.recovery=new JButton("恢复(Y)");

this.um=new UndoManager();

this.fontColor=new JButton("颜色");

this.fontSize=new JButton("大小");

this.fontTypeface=new JButton("字体");

//按钮添加活动监听和快捷键

fontColor.addActionListener(this);

fontSize.addActionListener(this);

fontTypeface.addActionListener(this);

openFile.addActionListener(this);

openFile.setMnemonic(KeyEvent.VK_O);

createNewTxt.addActionListener(this);

createNewTxt.setMnemonic(KeyEvent.VK_C);

saveFile.addActionListener(this);

saveFile.setMnemonic(KeyEvent.VK_S);

preservationFile.addActionListener(this);

preservationFile.setMnemonic(KeyEvent.VK_P);

newWindow.addActionListener(this);

newWindow.setMnemonic(KeyEvent.VK_N);

revoke.addActionListener(this);

revoke.setMnemonic(KeyEvent.VK_Z);

recovery.addActionListener(this);

recovery.setMnemonic(KeyEvent.VK_Y);

frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE); //设置框架默认关闭策略，最后一个框架关闭时，程序终止

frame.setTitle("记事本."+inOutFile.getName()); //框架标题，方便用户知道正在操作哪个文本文件

splitPane.setDividerLocation(0.2); //分割条位置

frame.setSize(600, 400);

frame.setLocation(400, 200);

frame.setVisible(true);

textArea.setLineWrap(true); //自动换行

textArea.setFont(font);

scrollPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED); //水平滚动条何时出现在滚动条面板中，策略为按需要出现

scrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED); //垂直滚动条何时出现在滚动条面板中，策略为按需要出现

//将按钮添加到各自所属面板中

//选项面板

panelOption.add(newWindow);

panelOption.add(createNewTxt);

panelOption.add(openFile);

panelOption.add(saveFile);

panelOption.add(preservationFile);

//字体面板

panelFont.add(fontSize);

panelFont.add(fontColor);

panelFont.add(fontTypeface);

//撤销面板

panelUndo.add(revoke);

panelUndo.add(recovery);

//添加选项卡

tabbedPane.addTab("选项",panelOption);

tabbedPane.addTab("字体",panelFont);

tabbedPane.addTab("UNDO", panelUndo);

//添加到属性面板

statePanel.add(wordNumber);

statePanel.add(lineRowLabel);

statePanel.add(fontSizeNumLabel);

statePanel.add(fontColorNumLabel);

statePanel.add(fontTypefaceNumLabel);

statePanel.add(timeLabel);

//主面板添加

lowerPanel.add(statePanel,BorderLayout.SOUTH);

lowerPanel.add(scrollPane,BorderLayout.CENTER);

frame.add(splitPane);

textArea.getDocument().addUndoableEditListener(um); //添加可撤销的编辑监听器

textArea.addCaretListener(new CaretListener() { //添加光标监听

@Override

public void caretUpdate(CaretEvent e) {

// TODO Auto-generated method stub

try {

int pos = textArea.getCaretPosition(); //获取行数

int lineOfC = textArea.getLineOfOffset(pos) + 1; //获取列数

int col = pos - textArea.getLineStartOffset(lineOfC - 1) + 1;

wordNumber.setText("字数："+textArea.getText().length());

lineRowLabel.setText( "当前位置: " + lineOfC + "行" + col + "列 ");

}catch(Exception e1){

}

});

frame.addWindowListener(new WindowAdapter() { //添加窗口监听，参数为窗口适配器，覆写需要的监听事件及对应的行为,等效于下面那个方法

@Override

public void windowClosing(WindowEvent e) {

outputFile(textArea.getText());

notepadFrameSum--;

if(notepadFrameSum<=0) {

System.exit(1);

}

});

configTime(); //显示时间

attributeRead(); //属性恢复

changeStateLabel();//改变属性标签

}

@Override

public void actionPerformed(ActionEvent e) { //主页面按钮活动执行方法

// TODO Auto-generated method stub

if(e.getSource() instanceof JButton&&this.frameSum==1) {

this.frameSum++;

if(e.getSource()==this.fontColor) {

changeColor();

}else if(e.getSource()==this.fontSize) {

changeFontSize();

}else if(e.getSource()==this.fontTypeface) {

changeFontTypeface();

}else if(e.getSource()==this.openFile) {

outputFile(this.textArea.getText());

inputFile(openNewFile());

frame.setTitle("记事本."+inOutFile.getName());

}else if(e.getSource()==this.createNewTxt) {

outputFile(this.textArea.getText());

createTxt();

}else if(e.getSource()==this.preservationFile) {

outputFile(this.textArea.getText());

saveFile();

}else if(e.getSource()==this.newWindow) {

this.frameSum--;

new Notepad().createTxt();

}else if(e.getSource()==this.revoke) {

this.frameSum--;

if (um.canUndo()) {

um.undo();

}

}else if(e.getSource()==this.recovery) {

this.frameSum--;

if (um.canRedo()) {

um.redo();

}

}else if(e.getSource()==this.saveFile) {

this.frameSum--;

outputFile(this.textArea.getText());

promptLabel();

}

public void changeStateLabel() { //改变状态标签的方法

this.fontSizeNumLabel.setText("字体大小:"+this.fontSizeNum);

this.fontColorNumLabel.setText("字体颜色:"+this.fontColorNum);

this.fontTypefaceNumLabel.setText("字体:"+this.fontTypefaceNum);

}

void configTime() { //时间更新

Timer tmr = new Timer();

tmr.scheduleAtFixedRate(new JLabelTimerTask(), new Date(), 1000); //以固定1000毫秒频率执行线程

}

protected class JLabelTimerTask extends TimerTask { //被执行的线程类

SimpleDateFormat dateFormatter = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");

public void run() {

time = dateFormatter.format(Calendar.getInstance().getTime());

timeLabel.setText(time);

}

public void attributeSave() { //属性保存

this.attributeFile=new File(Notepad.attributePath);

if(!this.attributeFile.isDirectory()) {

this.attributeFile.mkdirs();

}

this.attributeFile=new File(Notepad.attributePath+File.separator+this.inOutFile.getName());

if(!this.attributeFile.exists()) {

try {

this.attributeFile.createNewFile();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

try {

Writer output=new FileWriter(this.attributeFile);

output.write(fontSizeNum+"\n"+fontColorNum+"\n"+fontTypefaceNum+"\n"+fontStyle+"\n");

output.close();

System.out.println("属性保存成功");

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

public void attributeRead() { //属性恢复

this.attributeFile=new File(Notepad.attributePath+File.separator+this.inOutFile.getName());

if(!this.attributeFile.exists()) {

try {

this.attributeFile.createNewFile();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

attributeSave();

return;

}else {

try {

Reader input=new FileReader(attributeFile);

int c;

for(int i=0;i<4;i++) {

char ch[]=new char[1024];

int x=0;

while((c=input.read())!='\n'&&c!=-1) {

ch[x]=(char)c;

x++;

}

if(i==0) {

this.fontSizeNum=Integer.parseInt(new String(ch,0,x));

}else if(i==1) {

this.fontColorNum=new String(ch,0,x);

}else if(i==2) {

this.fontTypefaceNum=new String(ch,0,x);

}else {

this.fontStyle=Integer.parseInt(new String(ch,0,x));

}

this.textArea.setFont(new Font(this.fontTypefaceNum,this.fontStyle, this.fontSizeNum));

this.textArea.setForeground(judge(this.fontColorNum));

input.close();

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

public String inputFile() { //初始化文件输入方法

StringBuffer path=new StringBuffer(Notepad.parentsPath);

File file =new File(path.toString());

File[] sonFiles=null;

if(!file.isDirectory()) {

try {

file.mkdirs();

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

if(file.listFiles().length==0) {

sonFiles=new File[3];

path.append(File.separator+"1.txt");

File fileOne=new File(path.toString());

try {

fileOne.createNewFile();

sonFiles[0]=fileOne;

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}else {

sonFiles=file.listFiles();

}

this.inOutFile=sonFiles[0];

char[] ch=new char[(int)sonFiles[0].length()];

String text=null;

try {

Reader input=new FileReader(sonFiles[0]);

input.read(ch);

input.close();

text=new String(ch).trim();

return text;

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

return text;

}

public void inputFile(File file) { //后续文件输入方法

char[] ch=new char[(int)file.length()];

try {

Reader input=new FileReader(file);

input.read(ch);

input.close();

this.textArea.setText(new String(ch).trim());

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

public void outputFile(String text) { //输出到文件方法

if(!this.inOutFile.exists()) {

try {

this.inOutFile.createNewFile();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

try {

Writer output=new FileWriter(this.inOutFile);

output.write(text);

output.close();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

System.out.println("自动保存！");

promptLabel();

}

public void promptLabel() { //提示标签提示文件已自动保存

JFrame frame=new JFrame();

JLabel informationLabel=new JLabel("已自动保存");

frame.add(informationLabel);

informationLabel.setForeground(Color.BLACK);

frame.setLocation(this.frame.getX()+200, this.frame.getY()+400);

frame.setSize(150, 70);

frame.setVisible(true);

Thread t= new Thread(){

public void run(){

try {

Thread.sleep(3000);

informationLabel.setText("");

frame.dispose();

} catch (InterruptedException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

};

t.start();

}

public void createTxt() { //新建文本

JDialog frame=new JDialog(this.frame,"新建",true);

JTextField txtName=new JTextField("");

JPanel panel=new JPanel();

JSplitPane splitPane=new JSplitPane(JSplitPane.VERTICAL_SPLIT,txtName,panel);

JButton yesButton=new JButton("YES");

JLabel label=new JLabel("");

yesButton.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

if(e.getSource()==yesButton) {

realizationCreateTxt(txtName, label);

}

});

txtName.addKeyListener(new KeyAdapter() {

public void keyPressed(KeyEvent e) {

if(e.getKeyCode()==KeyEvent.VK_ENTER) {

realizationCreateTxt(txtName, label);

}

});

frame.addWindowListener(new WindowAdapter() {

public void windowClosing(WindowEvent e) {

if(frameSum>1) frameSum--;

}

});

panel.setLayout(new FlowLayout(FlowLayout.CENTER));

panel.add(yesButton);

panel.add(label);

frame.add(splitPane);

splitPane.setDividerLocation(0.3);

frame.setSize(300, 110);

frame.setLocation(this.frame.getX()+200, this.frame.getY()+100);

frame.setVisible(true);

}

public void realizationCreateTxt(JTextField txtName,JLabel label) { //用方法实现替代多行代码操作

StringBuffer name=new StringBuffer(parentsPath);

name.append(File.separator+txtName.getText()).append(".txt");

File file=new File(name.toString());

if(!file.exists()) {

try {

file.createNewFile();

this.fontSizeNum=20;

this.fontColorNum="black";

this.fontTypefaceNum="华文行楷";

attributeSave();

label.setText("创建成功");

} catch (IOException e1) {

e1.printStackTrace();

}

}else {

label.setText("已有文件");

}

inOutFile=file;

inputFile(inOutFile);

attributeRead();

changeStateLabel();

frame.setTitle("记事本."+inOutFile.getName());

}

public File openNewFile() { //打开新文件

JFileChooser fileChooser=new JFileChooser(Notepad.parentsPath);

fileChooser.setDialogTitle("Open File");

if(fileChooser.showOpenDialog(this.frame)==JFileChooser.APPROVE_OPTION) {

this.inOutFile=fileChooser.getSelectedFile();

}

this.frameSum--;

attributeRead();

changeStateLabel();

return this.inOutFile;

}

public void saveFile() { //保存文件

JFileChooser fileChooser=new JFileChooser(Notepad.parentsPath);

fileChooser.setDialogTitle("Save File");

if(fileChooser.showSaveDialog(this.frame)==JFileChooser.APPROVE_OPTION) {

this.inOutFile=fileChooser.getSelectedFile();

this.frame.setTitle("记事本."+inOutFile.getName());

attributeSave();

}

this.frameSum--;

}

public void changeFontSize() { //改变字体大小

JDialog frame=new JDialog(this.frame,"字体大小",true);

JTextField fontsize=new JTextField("尺寸值(小于100)");

JPanel panel=new JPanel();

JSplitPane splitPane=new JSplitPane(JSplitPane.VERTICAL_SPLIT,fontsize,panel);

JButton yesButton=new JButton("YES");

JLabel label=new JLabel("");

fontsize.addMouseListener(new MouseAdapter() {

@Override

public void mouseEntered(MouseEvent e) {

// TODO Auto-generated method stub

mouseClicked(e);

}

@Override

public void mouseClicked(MouseEvent e) {

// TODO Auto-generated method stub

if(e.getClickCount()==2) {

fontsize.setText("");

}

});

yesButton.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

// TODO Auto-generated method stub

if(e.getSource() instanceof JButton) {

if(e.getSource()==yesButton) {

realizationChangeFontSize(fontsize, label);

}

});

fontsize.addKeyListener(new KeyAdapter() {

public void keyPressed(KeyEvent e) {

if(e.getKeyCode()==KeyEvent.VK_ENTER) {

realizationChangeFontSize(fontsize, label);

}

});

frame.addWindowListener(new WindowAdapter() {

@Override

public void windowClosing(WindowEvent e) {

frameSum--;

}

});

panel.setLayout(new FlowLayout(FlowLayout.CENTER));

panel.add(yesButton);

panel.add(label);

frame.add(splitPane);

splitPane.setDividerLocation(0.3);

frame.setSize(300, 110);

frame.setLocation(this.frame.getX()+200, this.frame.getY()+100);

frame.setVisible(true);

}

public void realizationChangeFontSize(JTextField fontsize,JLabel label) { //用方法实现替代多行代码操作

try {

this.fontSizeNum=Integer.parseInt(fontsize.getText());

if(this.fontSizeNum>0&&this.fontSizeNum<=100) {

this.textArea.setFont(new Font(this.fontTypefaceNum,this.fontStyle, this.fontSizeNum));

changeStateLabel();

attributeSave();

}else {

throw new Exception();

}

label.setText("尺寸正确，已修改");

}catch(Exception e1) {

label.setText("尺寸错误，请重试");

}

public void changeColor() { //改变字体颜色

JDialog frame=new JDialog(this.frame,"颜色选择",true);

JPanel panel=new JPanel();

JComboBox comboBox=new JComboBox(Notepad.colors);

comboBox.setBorder(BorderFactory.createTitledBorder("您喜欢的颜色"));

comboBox.setMaximumRowCount(4);

comboBox.addItemListener(new ItemListener() {

@Override

public void itemStateChanged(ItemEvent e) {

// TODO Auto-generated method stub

if(e.getStateChange()==ItemEvent.SELECTED) {

fontColorNum=(String)e.getItem();

textArea.setForeground(judge(fontColorNum));

changeStateLabel();

attributeSave();

}

});

panel.add(comboBox);

frame.add(panel);

frame.addWindowListener(new WindowAdapter() {

@Override

public void windowClosing(WindowEvent e) {

frameSum--;

}

});

frame.setSize(250, 100);

frame.setLocation(this.frame.getX()+200, this.frame.getY()+100);

frame.setVisible(true);

}

public Color judge(String s) { //颜色匹配判断

if("red".equalsIgnoreCase(s)) {

return Color.RED;

}else if("white".equalsIgnoreCase(s)) {

return Color.WHITE;

}else if("lightGray".equalsIgnoreCase(s)||"LIGHT_GRAY".equalsIgnoreCase(s)) {

return Color.LIGHT_GRAY;

}else if("gray".equalsIgnoreCase(s)) {

return Color.GRAY;

}else if("darkGray".equalsIgnoreCase(s)||"DARK_GRAY".equalsIgnoreCase(s)) {

return Color.DARK_GRAY;

}else if("black".equalsIgnoreCase(s)) {

return Color.BLACK;

}else if("pink".equalsIgnoreCase(s)) {

return Color.PINK;

}else if("orange".equalsIgnoreCase(s)) {

return Color.ORANGE;

}else if("yellow".equalsIgnoreCase(s)) {

return Color.YELLOW;

}else if("green".equalsIgnoreCase(s)) {

return Color.GREEN;

}else if("magenta".equalsIgnoreCase(s)) {

return Color.MAGENTA;

}else if("cyan".equalsIgnoreCase(s)) {

return Color.CYAN;

}else if("blue".equalsIgnoreCase(s)) {

return Color.BLUE;

} //"black","blue","cyan","darkGray","gray","green","lightGray","magenta","orange","pink","red","white"；

return null;

}

public void changeFontTypeface() { //改变字体的字体

JDialog frame=new JDialog(this.frame,"字体选择",true);

JPanel panel=new JPanel();

JComboBox comboBox=new JComboBox(Notepad.fonts);

comboBox.setBorder(BorderFactory.createTitledBorder("想要的字体"));

comboBox.setMaximumRowCount(8);

comboBox.addItemListener(new ItemListener() {

@Override

public void itemStateChanged(ItemEvent e) {

// TODO Auto-generated method stub

if(e.getStateChange()==ItemEvent.SELECTED) {

fontTypefaceNum=(String)e.getItem();

textArea.setFont(new Font(fontTypefaceNum, fontStyle, fontSizeNum));

changeStateLabel();

attributeSave();

}

});

panel.add(comboBox);

frame.add(panel);

frame.addWindowListener(new WindowAdapter() {

@Override

public void windowClosing(WindowEvent e) {

frameSum--;

}

});

frame.setSize(250, 100);

frame.setLocation(this.frame.getX()+200, this.frame.getY()+100);

frame.setVisible(true);

}

public void printAllFont(String s[]) { //输出所有可用本机字体

for(String str:s) {

if(!Pattern.compile("[a-zA-Z]").matcher(String.valueOf(str.charAt(0))).matches()) { //正则表达式使用方法.只输出中文

System.out.println(str);

}

public static void main(String[] args) {

// TODO Auto-generated method stub

new Notepad();

}

就是以上部分了。但是我没有用菜单面板，因为我是在教菜单面板之前就做好了，所以我用了选项卡面板，要是改的话也挺简单的，因为菜单面板和选项卡面板很像。但是最近比较忙，就不改了。

效果图：

posted @ 2019-11-29 14:29 李代璇阅读(2308) 评论(2) 编辑收藏举报

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