diff --git a/nullnull b/nullnull
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/src/java2022spring/Test.java b/src/java2022spring/Test.java
index 24deb29bfc0e5f50fdedcd21b504e77b529d48b6..11a91f7f2957c08820391f186fab363fe85ee2b7 100644
--- a/src/java2022spring/Test.java
+++ b/src/java2022spring/Test.java
@@ -1,7 +1,762 @@
 package java2022spring;
+import java.awt.BorderLayout;
+import java.awt.Font;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.awt.event.InputEvent;
+import java.awt.event.KeyAdapter;
+import java.awt.event.KeyEvent;
+import javax.swing.JButton;
+import javax.swing.JCheckBox;
+import javax.swing.text.JTextComponent;
+import javax.swing.JFrame;
+import javax.swing.JLabel;
+import javax.swing.JOptionPane;
+import javax.swing.JTextField;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import java.awt.event.WindowAdapter;
+import java.awt.event.WindowEvent;
+import java.io.BufferedWriter;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.awt.Color;
+import java.awt.GraphicsEnvironment;
+import javax.swing.BorderFactory;
+import javax.swing.JColorChooser;
+import javax.swing.JDialog;
+import javax.swing.JList;
+import javax.swing.JScrollPane;
+import javax.swing.JTextArea;
+import javax.swing.border.Border;
+import javax.swing.event.ChangeEvent;
+import javax.swing.event.ChangeListener;
+import javax.swing.JCheckBoxMenuItem;
+import javax.swing.JFileChooser;
+import javax.swing.JMenu;
+import javax.swing.JMenuBar;
+import javax.swing.JMenuItem;
+import javax.swing.JPopupMenu;
+import javax.swing.KeyStroke;
+import javax.swing.SwingConstants;
+import javax.swing.UIManager;
+import javax.swing.event.UndoableEditEvent;
+import javax.swing.event.UndoableEditListener;
+import javax.swing.undo.UndoManager;
+public class Test extends JFrame implements ActionListener {
+	private static final long serialVersionUID=1L;
+	JMenuBar menuBar=new JMenuBar();
+	JMenu file=new JMenu("文件(F)");
+	JMenu edit=new JMenu("编辑(E)");
+	JMenu formats=new JMenu("格式(O)");
+	JMenu check=new JMenu("查看(V)");
+	JMenu tool=new JMenu("工具(V)");
+	JMenu help=new JMenu("帮助(H)");
+	// 文件菜单
+	JMenuItem create=new JMenuItem("新建(N)");
+	JMenuItem open=new JMenuItem("打开(O)...");
+	JMenuItem save=new JMenuItem("保存(S)");
+	JMenuItem otherSave=new JMenuItem("另存为(A)...");
+	JMenuItem exit=new JMenuItem("退出(X)");
+	// 编辑菜单
+	JMenuItem undo=new JMenuItem("撤销(U)");
+	JMenuItem cut=new JMenuItem("剪切(T)");
+	JMenuItem copy=new JMenuItem("复制(C)");
+	JMenuItem paste=new JMenuItem("粘贴(P)");
+	JMenuItem delete=new JMenuItem("删除(D)");
+	JMenuItem selectAll=new JMenuItem("全选(A)");
+	JMenuItem timeDate=new JMenuItem("时间/日期(D)");
+	// 格式菜单
+	JCheckBoxMenuItem lineWrap=new JCheckBoxMenuItem("自动换行(W)");
+	JMenuItem fonts=new JMenuItem("字体(F)...");
+	// 查看菜单
+	JCheckBoxMenuItem status=new JCheckBoxMenuItem("状态栏");
+	// 工具菜单
+	JMenuItem calc=new JMenuItem("字数统计");
+	// 帮助菜单
+	JMenuItem about=new JMenuItem("关于编辑器(A)");
+	// 右键弹出菜单
+	JPopupMenu popupMenu=new JPopupMenu();
+	JMenuItem MenuMouseUndo=new JMenuItem("撤销(U)");
+	JMenuItem MenuMouseCut=new JMenuItem("剪切(T)");
+	JMenuItem MenuMouseCopy=new JMenuItem("复制(C)");
+	JMenuItem MenuMousePaste=new JMenuItem("粘贴(P)");
+	JMenuItem MenuMouseDelete=new JMenuItem("删除(D)");
+	JMenuItem MenuMouseselectAll=new JMenuItem("全选(A)");
+	JLabel stateBar;
+
+	JFileChooser fileChooser;
+	JTextArea textArea;
+	JScrollPane scrollPane;
+	boolean isSaved=true; // 判断文件是否已保存过
+	boolean isDistinguish=false; // 是否区分大小写标示
+	boolean isFindExist=false; // 是否已经有查找内容
+	int mark=0; // 用于查找的索引
+	UndoManager undoManager=new UndoManager();
+	Find findFrame=new Find(this);
+	Replace replaceFrame=new Replace(this);
+
+	public Test() {
+		init();
+		isSaved=true;//刚刚打开的窗口状态为已保存
+		this.setTitle("文本编辑器");
+		this.setSize(800,600);
+		this.setVisible(true);
+		this.setLocationRelativeTo(null);
+		this.setDefaultCloseOperation(EXIT_ON_CLOSE);
+	}
+
+	public void init() {
+		// 添加菜单栏及菜单项
+		menuBar.add(file);
+		menuBar.add(edit);
+		menuBar.add(formats);
+		menuBar.add(check);
+		menuBar.add(tool);
+		menuBar.add(help);
+		// 文件菜单
+		file.add(create);
+		file.add(open);
+		file.add(save);
+		file.add(otherSave);
+		file.addSeparator();
+		file.add(exit);
+		// 编辑菜单
+		edit.add(undo);
+		edit.addSeparator();// 分割线
+		edit.add(cut);
+		edit.add(copy);
+		edit.add(paste);
+		edit.add(delete);
+		edit.addSeparator();
+		edit.add(selectAll);
+		edit.add(timeDate);
+		// 查看菜单
+		check.add(status);
+		status.setSelected(true);
+		// 工具菜单
+		tool.add(calc);
+		// 格式菜单
+		formats.add(lineWrap);
+		lineWrap.setSelected(true);// 初始化时即勾选自动换行
+		formats.add(fonts);
+		// 帮助菜单
+		help.add(about);
+		this.setJMenuBar(menuBar);
+		
+		textArea=new JTextArea();
+		textArea.setFont(new Font("宋体",Font.PLAIN,16));//设置默认字体
+		textArea.setLineWrap(true); 		// 设置默认为自动换行
+		setLayout(new BorderLayout());		// 设置布局方式
+		stateBar=new JLabel("  ");
+		stateBar.setHorizontalAlignment(SwingConstants.RIGHT);
+		stateBar.setBorder(BorderFactory.createEtchedBorder());
+		this.add(stateBar,BorderLayout.SOUTH);
+		stateBar.setVisible(true);
+
+		scrollPane=new JScrollPane(textArea,JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);// 实例化scrollPane
+		this.add(scrollPane, BorderLayout.CENTER);
+
+		// 为控件添加快捷键
+		create.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_N,InputEvent.CTRL_MASK));
+		open.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_O,InputEvent.CTRL_MASK));
+		save.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S,InputEvent.CTRL_MASK));
+		exit.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_Q,InputEvent.CTRL_MASK));
+		undo.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_Z,InputEvent.CTRL_MASK));
+		cut.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_X,InputEvent.CTRL_MASK));
+		copy.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_C,InputEvent.CTRL_MASK));
+		paste.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_V,InputEvent.CTRL_MASK));
+		delete.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_D,InputEvent.CTRL_MASK));
+		selectAll.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_A,InputEvent.CTRL_MASK));
+		timeDate.setAccelerator(KeyStroke.getKeyStroke("F5"));
+
+		// 添加响应
+		create.addActionListener(this);
+		open.addActionListener(this);
+		save.addActionListener(this);
+		otherSave.addActionListener(this);
+		exit.addActionListener(this);
+		undo.addActionListener(this);
+		cut.addActionListener(this);
+		copy.addActionListener(this);
+		paste.addActionListener(this);
+		delete.addActionListener(this);
+		selectAll.addActionListener(this);
+		timeDate.addActionListener(this);
+		lineWrap.addActionListener(this);
+		fonts.addActionListener(this);
+		calc.addActionListener(this);
+		status.addActionListener(this);
+		about.addActionListener(this);
+		MenuMouseUndo.addActionListener(this);
+		MenuMouseCut.addActionListener(this);
+		MenuMouseCopy.addActionListener(this);
+		MenuMousePaste.addActionListener(this);
+		MenuMouseDelete.addActionListener(this);
+		MenuMouseselectAll.addActionListener(this);
+		fileChooser=new JFileChooser();
+		textArea.addKeyListener(new KeyAdapter() {
+			public void keyTyped(KeyEvent e) {
+				isSaved=false;
+			}
+		});
+		this.addWindowListener(new WindowAdapter() {
+			public void windowClosing(WindowEvent arg0) {
+				Exit();
+			}
+		});
+					
+		// 弹出菜单
+		
+		popupMenu.add(MenuMouseUndo);
+		popupMenu.add(MenuMouseCut);
+		popupMenu.add(MenuMouseCopy);
+		popupMenu.add(MenuMousePaste);
+		popupMenu.add(MenuMouseDelete);
+		popupMenu.add(MenuMouseselectAll);
+		textArea.addMouseListener(new MouseAdapter() {
+			public void mouseReleased(MouseEvent e) {
+				if (e.getButton()==MouseEvent.BUTTON3)
+					popupMenu.show(e.getComponent(),e.getX(),e.getY());
+			}
+
+			public void mouseClicked(MouseEvent e) {
+				if (e.getButton()==MouseEvent.BUTTON1)
+					popupMenu.setVisible(false);
+			}
+		});
+		textArea.addKeyListener(new KeyAdapter() {
+			public void keyPressed(KeyEvent e){
+				getStatus();
+			}
+		});
+
+		//撤销方法
+		textArea.getDocument().addUndoableEditListener(
+				new UndoableEditListener() {
+					public void undoableEditHappened(UndoableEditEvent e) {
+						undoManager.addEdit(e.getEdit());
+					}
+				});
+	}
+	
+//状态栏
+	private void getStatus()
+	{
+		int x=1,y=1;
+		int location=this.textArea.getSelectionStart();
+		String[] str=this.textArea.getText().split("\n");
+		for(int i=0;i<str.length;i++)
+		{
+			if(location>str[i].length())
+			{
+				location=location-str[i].length()-1;
+				x++;
+			}
+			else 
+			{
+				if(y==1)
+					y=location+1;
+				else
+					y=location+2;
+				break;
+			}
+		}
+		stateBar.setText("第  " +x +"  行 , 第  "+y+"  列");
+	}
+	// “新建”方法
+	public void NewFile() {
+		if (isSaved||textArea.equals("")) {
+			textArea.setText("");
+			setTitle("无标题");
+		} 
+		else {
+			int option=JOptionPane.showConfirmDialog(null,"是否将更改保存到"+"\""+this.getTitle()+"\"?","记事本",JOptionPane.INFORMATION_MESSAGE);
+			if (option==JOptionPane.YES_OPTION)
+				Save();
+			else if (option==JOptionPane.NO_OPTION);
+			textArea.setText("");
+			isSaved=true;
+			setTitle("无标题");
+		}
+	}
+
+	// “打开”方法
+	public void Open() {
+		if (isSaved) // 文件是否为保存状态
+		{
+			OpenFile(); // 打开
+		} 
+		else {
+			// 显示对话框
+			int result=JOptionPane.showConfirmDialog(null,"是否将更改保存到"+"\""+this.getTitle()+"\"?","记事本",JOptionPane.INFORMATION_MESSAGE);
+			switch(result) {
+			case JOptionPane.YES_OPTION: // 确认文件保存
+				Save(); // 保存文件
+				break;
+			case JOptionPane.NO_OPTION: // 放弃文件保存
+				OpenFile();
+				break;
+			}
+			isSaved=true;
+		}
+	}
+
+	public void OpenFile() { // 打开文件方法
+		fileChooser=new JFileChooser();
+		fileChooser.setDialogTitle("打开文件");
+		try {
+			int result=fileChooser.showOpenDialog(this);
+			if (result==JFileChooser.APPROVE_OPTION) {
+				File file=fileChooser.getSelectedFile();
+				setTitle(file.toString()); // 设置标题
+				textArea.setText(""); // 将编辑框清空
+				isSaved=true; // 刚打开的文件，保存状态即为“已保存”
+				FileInputStream fis=new FileInputStream(file);
+				byte dat[]=new byte[fis.available()];
+				fis.read(dat);
+				textArea.setText(new String(dat));
+				textArea.setCaretPosition(0); // 设置光标位置
+			} 
+			else if (result==JFileChooser.CANCEL_OPTION)
+				fileChooser.cancelSelection();
+		}
+		catch(Exception e) {
+			e.printStackTrace();
+		}
+	}
+
+	// “保存”方法
+	public void Save() {
+		File file=new File(getTitle()); // 从标题栏取得文件名称
+		if (!file.exists()) { // 若文件不存在则执行另存为
+			SaveAs();
+		} else {
+			try {
+				BufferedWriter buf=new BufferedWriter(new FileWriter(file));
+				buf.write(textArea.getText());// 将文字编辑区的文字写入文件
+				buf.close();
+			} catch(Exception e) {
+			}
+		}
+	}
+
+	// “另存为”方法
+	public void SaveAs() {
+		fileChooser.setDialogTitle("保存文件");
+		int result=fileChooser.showSaveDialog(null);// 显示文件对话框
+		if (result==JFileChooser.APPROVE_OPTION) // 如果确认选取文件
+		{
+			File file=fileChooser.getSelectedFile();
+			setTitle(file.toString()); // 在标题栏上设定文件名称
+			try {
+				file.createNewFile(); // 建立文件
+				Save(); // 进行文件保存
+			} catch(IOException e) {
+				JOptionPane.showMessageDialog(null,e.toString(),"无法建立新文件",JOptionPane.ERROR_MESSAGE);
+			}
+		}
+		isSaved=true;
+	}
+
+	// “退出”方法
+	public void Exit() {
+		if (isSaved) {
+			dispose();// 释放资源，关闭程序
+		} else {
+			int result=JOptionPane.showConfirmDialog(null,"是否将更改保存到"+"\""+this.getTitle()+"\"?","记事本",JOptionPane.INFORMATION_MESSAGE);
+			if (result==JOptionPane.YES_OPTION) {
+				Save();
+				dispose();
+			} else if (result==JOptionPane.NO_OPTION)
+				dispose();
+		}
+	}
+
+	// “撤销”方法
+	public void Undo() {
+		if (undoManager.canUndo()) {
+			undoManager.undo();
+		}
+	}
+
+	// “时间/日期”添加
+	public void TimeDate() {
+		Date time=new Date();
+		SimpleDateFormat times=new SimpleDateFormat("yyyy年mm月dd日 hh:mm");// 格式化日期和时间
+		textArea.insert(times.format(time),textArea.getCaretPosition());
+	}
+
+	// 关于记事本
+	public void ShowAbout() {
+		JOptionPane.showMessageDialog(null,"这是一个简单的编辑器\n版本号：1.0\n日期：2022.06.10","关于\"记事本\"",JOptionPane.PLAIN_MESSAGE);
+	}
+	public void getCalc()
+	{
+		int low=textArea.getLineCount();
+		int words=new String(textArea.getText()).length();
+		JOptionPane.showMessageDialog(null,"总行数："+low+"\n"+"总字数："+words,"字数统计",JOptionPane.PLAIN_MESSAGE);
+	}
+
+	public void actionPerformed(ActionEvent e) {
+		if (e.getSource()==create)
+			NewFile();
+		else if (e.getSource()==open)
+			Open();
+		else if (e.getSource()==save)
+			Save();
+		else if (e.getSource()==otherSave)
+			SaveAs();
+		else if (e.getSource()==exit)
+			Exit();
+		else if (e.getSource()==undo)
+			Undo();
+		else if (e.getSource()==cut)
+			textArea.cut();
+		else if (e.getSource()==copy)
+			textArea.copy();
+		else if (e.getSource()==paste)
+			textArea.paste();
+		else if (e.getSource()==delete)
+			delete.addActionListener(new ActionListener(){
+				public void actionPerformed(ActionEvent event){  
+				  int start,end;
+				  start=textArea.getSelectionStart();
+				  end=textArea.getSelectionEnd();
+				  textArea.replaceRange("",start,end);
+				}
+			});
+		else if (e.getSource()==selectAll)
+			textArea.selectAll();
+		else if (e.getSource()==timeDate)
+			TimeDate();
+		else if (e.getSource()==lineWrap)
+			textArea.setLineWrap(!textArea.getLineWrap());
+		else if(e.getSource()==fonts)
+		{
+			Fonts f1=new Fonts(this);
+			f1.setVisible(true);
+			f1.setFont();
+		}
+		else if(e.getSource()==calc)
+		{
+			getCalc();
+		}
+		else if (e.getSource()==about)
+			ShowAbout();
+		else if (e.getSource()==MenuMouseUndo)
+			Undo();
+		else if (e.getSource()==MenuMouseCut)
+			textArea.cut();
+		else if (e.getSource()==MenuMouseCopy)
+			textArea.copy();
+		else if (e.getSource()==MenuMousePaste)
+			textArea.paste();
+		else if (e.getSource()==MenuMouseselectAll)
+			textArea.selectAll();
+		getStatus();
+	}
 
-public class Test {
 	public static void main(String[] args) {
-		System.out.println("Hello world!");
+		try {
+			UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
+		} catch (Exception e) {
+			System.err.println("获取系统外观失败!!:" + e);
+		}
+		new Test();
 	}
 }
+class Replace extends JFrame {
+	private static final long serialVersionUID = 1L;
+	JLabel label1=new JLabel("查找内容:");
+	JLabel label2=new JLabel("替换为:");
+	JCheckBox checkBox=new JCheckBox("区分大小写");
+	JTextField textField=new JTextField();
+	JTextField insteadField=new JTextField();
+	JButton findButton=new JButton("查找下一个");
+	JButton insteadButton=new JButton("替换");
+	JButton insteadallButton=new JButton("全部替换");
+	JButton cancelButton=new JButton("取消");
+	String findword=new String();
+	String text=new String();
+	int index;
+	Replace(final Test my)
+	{
+		this.setLayout(null);
+		setTitle("替换");
+		label1.setBounds(10,5,70,30);
+		label2.setBounds(10, 30, 70, 30);
+		textField.setBounds(70,10,160,20);
+		insteadField.setBounds(70,30,160,20);
+		findButton.setBounds(230, 10, 100, 20);
+		checkBox.setBounds(10,85,140,20);
+		insteadButton.setBounds(230,35,100,20);
+		insteadallButton.setBounds(230,60,100,20);
+		cancelButton.setBounds(230,85,100,20);
+		this.add(label1);
+		this.add(label2);
+		findButton.addActionListener(new ActionListener() {						
+			public void actionPerformed(ActionEvent e) {
+				findword=textField.getText();
+				text=my.textArea.getText();
+				if(!checkBox.isSelected())
+				{
+					text=text.toLowerCase();
+					findword=findword.toLowerCase();
+				}
+				index=text.indexOf(findword,my.textArea.getCaretPosition());
+				if(index!=-1)
+				{
+					my.textArea.setCaretPosition(index+findword.length());
+					my.textArea.select(index, findword.length()+index);
+				}
+				else{
+					JOptionPane.showMessageDialog(Replace.this,"找不到"+" "+findword+" ","记事本",JOptionPane.WARNING_MESSAGE);
+				}
+			}
+		});
+		this.setAlwaysOnTop(true);
+		this.add(findButton);
+		insteadButton.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				if(my.textArea.getSelectedText()!=null)
+				{
+					if(my.textArea.getSelectedText().equals(findword))
+					{
+						text=my.textArea.getText();
+						my.textArea.setText(text.substring(0, index)+insteadField.getText()+text.substring(index+findword.length()));
+						my.textArea.setCaretPosition(index+insteadField.getText().length());
+						findButton.doClick();
+					}
+				}
+				else{
+					findButton.doClick();
+				}
+			}
+		});
+		this.add(insteadButton);
+		insteadallButton.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				my.textArea.setText(my.textArea.getText().replace(textField.getText(),insteadField.getText()));
+			}
+		});
+		this.add(insteadallButton);
+		this.add(textField);
+		this.add(insteadField);
+		this.add(checkBox);
+		cancelButton.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				Replace.this.setVisible(false);
+			}
+		});
+		this.add(cancelButton);
+		this.setSize(350,200);
+		this.setVisible(false);
+		this.setDefaultCloseOperation(HIDE_ON_CLOSE);
+		this.setLocationRelativeTo(null);
+	}
+	public void Show() {
+		this.setVisible(true);
+	}
+	public String Getfindword() {
+		return findword;
+	}
+}
+class Fonts extends JDialog {
+	private static final long serialVersionUID = 4042773383845024827L;
+	// 字体格式
+	String style=null;
+	String bold=null;
+	String size=null;
+	Font font=null;
+	String[] str_style=GraphicsEnvironment.getLocalGraphicsEnvironment().getAvailableFontFamilyNames();
+	String[] str_bold={"常规","倾斜","粗体","粗体 倾斜" };
+	String[] str_size={"8","9","10","11","12","14","16","18","20","22","24","26","28","36","48","72"};
+	public JLabel label1=new JLabel("字体(F):");
+	public JList<String> fontStyle=new JList<String>(str_style);
+	public JScrollPane StyleJScrollPane=new JScrollPane(fontStyle);
+	public JLabel label2=new JLabel("字形(Y):");
+	public JList<String> fontBold=new JList<String>(str_bold);
+	public JScrollPane BoldJScrollPane=new JScrollPane(fontBold);
+	public JLabel label3=new JLabel("大小(S):");
+	public JTextField sizeField=new JTextField("23");
+	public JList<String> fontSize=new JList<String>(str_size);
+	public JScrollPane SizeJScrollPane=new JScrollPane(fontSize);
+	public JLabel fontDisplay=new JLabel("AaBbYyZz");
+	public JTextField textField=new JTextField();
+	public JButton sureButton=new JButton("确定");
+	public JButton cancelButton=new JButton("取消");
+	public JButton colorButton=new JButton("改变颜色");
+	public Color color;
+	Test my=null;
+	public Fonts(Test frame)
+	{
+		super(frame,"字体和颜色",true);
+		color=Color.black;
+		this.my=frame;
+		this.style="宋体";
+		this.bold="常规";
+		this.size="23";		
+		label1.setBounds(10,5,50,30);
+		StyleJScrollPane.setBounds(10,40,160,150);
+		fontStyle.addMouseListener(new MouseAdapter(){
+			 public void mousePressed(MouseEvent e)
+			 {
+				 JList source=(JList)e.getSource();
+				 Fonts.this.style=source.getSelectedValue().toString();
+				 Fonts.this.setFont();
+			 }
+		});
+		label2.setBounds(190,5,50,30);
+		BoldJScrollPane.setBounds(190,40,90,150);
+		fontBold.addMouseListener(new MouseAdapter(){
+			 public void mousePressed(MouseEvent e)
+			 {
+				 JList source=(JList)e.getSource();
+				 Fonts.this.bold=source.getSelectedValue().toString();
+				 Fonts.this.setFont();
+			 }
+		});
+		label3.setBounds(300,5,60,30);
+		SizeJScrollPane.setBounds(300,60,60,130);
+		fontSize.addMouseListener(new MouseAdapter(){
+			 public void mousePressed(MouseEvent e)
+			 {
+				 JList source=(JList)e.getSource();
+				 sizeField.setText(source.getSelectedValue().toString());
+				 Fonts.this.size=source.getSelectedValue().toString();
+				 Fonts.this.setFont();
+			 }
+		});
+		sizeField.setBounds(300,40,60,20);
+		fontDisplay.setBorder(BorderFactory.createTitledBorder("示例"));
+		fontDisplay.setBounds(20,220,200,100);
+		fontDisplay.setHorizontalAlignment(JLabel.CENTER);
+		sureButton.setBounds(280,260,80,30);
+		sureButton.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				my.textArea.setFont(font);
+				my.textArea.setForeground(color);
+				Fonts.this.dispose();
+			}
+		});
+		cancelButton.setBounds(280,300,80,30);
+		cancelButton.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				Fonts.this.dispose();
+			}
+		});
+		
+		colorButton.setBounds(260,220,100,20);
+		this.add(colorButton);
+		colorButton.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent arg0) {
+				color=JColorChooser.showDialog(null,"改变字体颜色",Color.black);
+			}
+		});
+		this.add(label1);
+		this.add(label2);
+		this.add(label3);
+		this.add(sizeField);
+		this.add(BoldJScrollPane);
+		this.add(StyleJScrollPane);
+		this.add(SizeJScrollPane);
+		this.add(fontDisplay);
+		this.add(sureButton);
+		this.add(cancelButton);
+		this.setLayout(null);
+		this.setSize(400,380);
+		int x=(int)my.getLocation().x+100;   
+        int y=(int)my.getLocation().y+100;
+        this.setLocation(x,y);  
+	}
+	
+	// 由选项确定font字体
+	void setFont() {
+		int bold;
+		if (this.bold.equals("粗体"))
+			bold=Font.BOLD;
+		else if (this.bold.equals("常规"))
+			bold=Font.PLAIN;
+		else if (this.bold.equals("粗体 倾斜"))
+			bold=Font.BOLD+Font.ITALIC;
+		else if (this.bold.equals("倾斜"))
+			bold=Font.ITALIC;
+		else
+			bold=Font.PLAIN;
+		this.font=new Font(this.style,bold,Integer.parseInt(this.size));
+		// 更改样本字体
+		fontDisplay.setForeground(color);
+		this.fontDisplay.setFont(this.font);
+
+	}
+
+}
+class Find extends JFrame {
+	private static final long serialVersionUID=1L;
+	JLabel label1=new JLabel("查找内容");
+	JCheckBox checkBox=new JCheckBox("区分大小写");
+	JTextField textField=new JTextField();
+	JButton findButton=new JButton("查找下一个");
+	JButton cancelButton=new JButton("取消");
+	String findword=new String();
+	String text=new String();
+	int index;
+	public Find(final Test my)
+	{
+		this.setLayout(null);
+		setTitle("查找");
+		label1.setBounds(10,5,70,30);
+		textField.setBounds(70,10,160,20);
+		findButton.setBounds(230, 10, 100, 20);
+		checkBox.setBounds(10,35,140,20);
+		cancelButton.setBounds(230,35,100,20);
+		this.add(label1);
+		findButton.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				findword=textField.getText();
+				text=my.textArea.getText();
+				if(!checkBox.isSelected())
+				{
+					text=text.toLowerCase();
+					findword=findword.toLowerCase();
+				}
+				index=text.indexOf(findword,my.textArea.getCaretPosition());
+				if(index!=-1)
+				{
+					System.out.println(index+" "+findword.length());
+					my.textArea.setCaretPosition(index+findword.length());
+					my.textArea.select(index,findword.length()+index);
+					
+				}
+				else{
+					JOptionPane.showMessageDialog(Find.this,"找不到"+" "+findword+" ","记事本",JOptionPane.WARNING_MESSAGE);
+				}
+			}
+		});
+		this.setAlwaysOnTop(true);
+		this.add(findButton);
+		this.add(textField);
+		this.add(checkBox);
+		cancelButton.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				Find.this.setVisible(false);
+			}
+		});
+		this.add(cancelButton);
+		this.setSize(350,100);
+		this.setVisible(false);
+		this.setDefaultCloseOperation(HIDE_ON_CLOSE);
+		this.setLocationRelativeTo(null);
+	}
+	public void Show() {
+		this.setVisible(true);
+	}
+	public String Getfindword() {
+		return findword;
+	}
+}
\ No newline at end of file