java实现Windows记事本
Posted feiquan
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给大家分享下我之前的作品：
源文件下载：
链接：https://pan.baidu.com/s/1N45VsS9aVgmvhvYjRLxBrA
提取码：b9fg
源码：
JF_Notpad.java实现主要面板，在二级菜单可以实现java模板建立，可以后期自己添加：
import java.awt.*; import javax.swing.*; import javax.swing.event.*; //导入菜单 import javax.swing.filechooser.FileNameExtensionFilter; import java.util.Date; //获取系统的时间 import java.text.SimpleDateFormat; //控制系统的时间格式 import java.awt.event.*; import java.io.*; import java.util.regex.*; public class JF_Notpad extends JFrame implements ActionListener,WindowListener{ //menuBar private JMenuBar mb; private JMenu file,edit,format,view,help; //menuToolBar private JToolBar tool; private static int BUTTONWIDTH,BUTTONHEIGHT; private JButton create,unfold,copy,cut,paste,pasteShortcut,delete; //File //JMenu下还可以有二级菜单 private JMenu newNot; //JMenuItem不可以有其他菜单 private JMenuItem notpad,model,open,save,saveAs,pageSet,print,exit; //Edit private JMenuItem undoE,cutE,copyE,pasteE,deleteE,findE,findNextE,replaceE,goToE,selectAllE,timeDateE; //Format private JMenuItem wordWrap,font; //View private JMenuItem statusBar; //Help private JMenuItem viewHelp,about; //leftSpace private JPanel leftSpace; //TextArea private JTextArea content; private JScrollPane scroll; //openUrl,saveUrl private static String openUrl="E:/notpad.txt"; //保存之前打开文件的路径 private static String saveUrl="E:/notpad.txt"; //保存之前保存文件的路径 private boolean saved=false; //判断文件是否保存过 //contentFont 字体 private Font contentFont; //是否在打开保存面板后，还应该打开选择文件面板 private boolean openFileBool=false; public static void main(String[] args) { JF_Notpad not=new JF_Notpad(); } public static JButton changeIconSize(JButton button,String url,int width,int height,String tip){ button.setBounds(0,0,width,height); ImageIcon buttonImg=new ImageIcon(url); //改变图片的大小 Image temp=buttonImg.getImage().getScaledInstance(button.getWidth(), button.getHeight(), buttonImg.getImage().SCALE_DEFAULT); button=new JButton(new ImageIcon(temp)); button.setToolTipText(tip); //提示 return button; } public static Image changeImageSize(String url,int width,int height){ ImageIcon Img=new ImageIcon(url); //改变图片的大小 Image temp=Img.getImage().getScaledInstance(width, height, Img.getImage().SCALE_DEFAULT); return temp; } JF_Notpad(){ //menubar mb=new JMenuBar(); file=new JMenu("File(F)"); file.setMnemonic(\'F\'); edit=new JMenu("Edit(E)"); edit.setMnemonic(\'E\'); format=new JMenu("Format(O)"); format.setMnemonic(\'O\'); view =new JMenu("View(V)"); view.setMnemonic(\'V\'); help=new JMenu("Help(H)"); help.setMnemonic(\'H\'); //menuToolBar tool=new JToolBar(); BUTTONWIDTH=22; BUTTONHEIGHT=22; create=new JButton(); create=JF_Notpad.changeIconSize(create, "img/notpad/news.png", BUTTONWIDTH, BUTTONWIDTH, "New"); unfold=new JButton(); unfold=JF_Notpad.changeIconSize(unfold, "img/notpad/open.png", BUTTONWIDTH, BUTTONWIDTH, "Open"); copy=new JButton(); copy=JF_Notpad.changeIconSize(copy, "img/notpad/copy.png", BUTTONWIDTH, BUTTONWIDTH, "Copy"); cut=new JButton(); cut=JF_Notpad.changeIconSize(cut, "img/notpad/cut.png", BUTTONWIDTH, BUTTONWIDTH, "Cut"); paste=new JButton(); paste=JF_Notpad.changeIconSize(unfold, "img/notpad/paste.png", BUTTONWIDTH, BUTTONWIDTH, "Paste"); pasteShortcut=new JButton(); pasteShortcut=JF_Notpad.changeIconSize(pasteShortcut, "img/notpad/pasteShortcut.png", BUTTONWIDTH, BUTTONWIDTH, "PasteShortcut"); delete=new JButton(); delete=JF_Notpad.changeIconSize(delete, "img/notpad/delete.png", BUTTONWIDTH, BUTTONWIDTH, "Delete"); //menuToolBarListener create.setActionCommand("notpad"); create.addActionListener(this); unfold.setActionCommand("open"); unfold.addActionListener(this); copy.setActionCommand("copyE"); copy.addActionListener(this); cut.setActionCommand("cutE"); cut.addActionListener(this); paste.setActionCommand("pasteE"); paste.addActionListener(this); pasteShortcut.setActionCommand("pasteShortcut"); pasteShortcut.addActionListener(this); delete.setActionCommand("deleteE"); delete.addActionListener(this); //file newNot=new JMenu("New(N)"); newNot.setMnemonic(\'N\'); ImageIcon icon=new ImageIcon(this.changeImageSize("img/notpad/logo.png", BUTTONWIDTH-5,BUTTONHEIGHT-5 )); notpad=new JMenuItem("Notpad",icon); model=new JMenuItem("Model"); icon=new ImageIcon(this.changeImageSize("img/notpad/open.png", BUTTONWIDTH-5, BUTTONHEIGHT-5)); open=new JMenuItem("Open",icon); icon=new ImageIcon(this.changeImageSize("img/notpad/save.png", BUTTONWIDTH-5, BUTTONHEIGHT-5)); save=new JMenuItem("Save",icon); icon=new ImageIcon(this.changeImageSize("img/notpad/saveAs.png", BUTTONWIDTH-5, BUTTONHEIGHT-5)); saveAs=new JMenuItem("Save As...",icon); pageSet=new JMenuItem("PageSet"); print=new JMenuItem("Print"); icon=new ImageIcon(this.changeImageSize("img/notpad/exit.png", BUTTONWIDTH-5, BUTTONHEIGHT-5)); exit=new JMenuItem("Exit",icon); //FileListener notpad.setActionCommand("notpad"); notpad.addActionListener(this); model.setActionCommand("model"); model.addActionListener(this); open.setActionCommand("open"); open.addActionListener(this); save.setActionCommand("save"); save.addActionListener(this); saveAs.setActionCommand("saveAs"); saveAs.addActionListener(this); pageSet.setActionCommand("pageSet"); pageSet.addActionListener(this); print.setActionCommand("print"); print.addActionListener(this); exit.setActionCommand("exit"); exit.addActionListener(this); //Edit undoE=new JMenuItem("Undo"); icon=new ImageIcon(this.changeImageSize("img/notpad/cut.png", BUTTONWIDTH-5, BUTTONHEIGHT-5)); cutE=new JMenuItem("Cut",icon); icon=new ImageIcon(this.changeImageSize("img/notpad/copy.png", BUTTONWIDTH-5, BUTTONHEIGHT-5)); copyE=new JMenuItem("Copy",icon); icon=new ImageIcon(this.changeImageSize("img/notpad/paste.png", BUTTONWIDTH-5, BUTTONHEIGHT-5)); pasteE=new JMenuItem("Paste",icon); icon=new ImageIcon(this.changeImageSize("img/notpad/delete.png", BUTTONWIDTH-5, BUTTONHEIGHT-5)); deleteE=new JMenuItem("Delete",icon); findE=new JMenuItem("Find..."); findNextE=new JMenuItem("Find Next"); replaceE=new JMenuItem("Replace..."); goToE=new JMenuItem("Go To.."); selectAllE=new JMenuItem("Select All"); timeDateE=new JMenuItem("Time/Data"); //EditListener undoE.setActionCommand("undoE"); undoE.addActionListener(this); cutE.setActionCommand("cutE"); cutE.addActionListener(this); copyE.setActionCommand("copyE"); copyE.addActionListener(this); pasteE.setActionCommand("pasteE"); pasteE.addActionListener(this); deleteE.setActionCommand("deleteE"); deleteE.addActionListener(this); findE.setActionCommand("findE"); findE.addActionListener(this); findNextE.setActionCommand("findNextE"); findNextE.addActionListener(this); replaceE.setActionCommand("replaceE"); replaceE.addActionListener(this); goToE.setActionCommand("goToE"); goToE.addActionListener(this); selectAllE.setActionCommand("selectAllE"); selectAllE.addActionListener(this); timeDateE.setActionCommand("timeDateE"); timeDateE.addActionListener(this); //Format icon=new ImageIcon(this.changeImageSize("img/notpad/wordWrap.png", BUTTONWIDTH-5, BUTTONHEIGHT-5)); wordWrap=new JMenuItem("Word Wrap",icon); icon=new ImageIcon(this.changeImageSize("img/notpad/font.png", BUTTONWIDTH-8, BUTTONHEIGHT-8)); font=new JMenuItem("Font...",icon); //FormatListener wordWrap.setActionCommand("wordWrap"); wordWrap.addActionListener(this); font.setActionCommand("font"); font.addActionListener(this); //View statusBar=new JMenuItem("Status Bar"); //ViewListener statusBar.setActionCommand("statusBar"); statusBar.addActionListener(this); //Help viewHelp=new JMenuItem("View Help"); icon=new ImageIcon(this.changeImageSize("img/notpad/about.png", BUTTONWIDTH-5, BUTTONHEIGHT-5)); about=new JMenuItem("About NotePad",icon); //HelpListener viewHelp.setActionCommand("viewHelp"); viewHelp.addActionListener(this); about.setActionCommand("about"); about.addActionListener(this); //leftSpace leftSpace=new JPanel(); //contentFont contentFont=new Font("KaiTi",Font.PLAIN,20); //textArea content=new JTextArea(); content.setFont(contentFont); scroll=new JScrollPane(content); //scroll.setHorizontalScrollBar(content); //openUrl,saveUrl // openUrl="E:/notpad.txt"; // saveUrl="E:/notpad.txt"; // saved=false; //saveFilePanel // Save saveF=new Save("Save",this); //添加组件，从下一级开始装 newNot.add(notpad); newNot.add(model); file.add(newNot); file.add(open); file.add(save); file.add(saveAs); file.addSeparator(); file.add(pageSet); file.add(print); file.addSeparator(); file.add(exit); edit.add(undoE); edit.addSeparator(); edit.add(cutE); edit.add(copyE); edit.add(pasteE); edit.add(deleteE); edit.addSeparator(); edit.add(findE); edit.add(findNextE); edit.add(replaceE); edit.add(goToE); edit.addSeparator(); edit.add(selectAllE); edit.add(timeDateE); format.add(wordWrap); format.add(font); view.add(statusBar); help.add(viewHelp); help.addSeparator(); help.add(about); mb.add(file); mb.add(edit); mb.add(format); mb.add(view); mb.add(help); tool.add(create); tool.add(unfold); tool.add(copy); tool.add(cut); tool.add(paste); tool.add(pasteShortcut); tool.add(delete); this.setJMenuBar(mb); this.add(tool,BorderLayout.NORTH); this.add(leftSpace,BorderLayout.WEST); this.add(scroll); this.setTitle("Notpad"); this.setIconImage(new ImageIcon("img/notpad/logo.png").getImage()); this.setLocation(300,300); this.setSize(400,400); this.setDefaultCloseOperation(this.EXIT_ON_CLOSE); this.setVisible(true); } private String origContent=null; //保存一开始的文件或者保存过的文件 private String copyContent=null; @Override public void actionPerformed(ActionEvent e) { switch(e.getActionCommand()){ case "notpad":{ System.out.println("notpad"); this.isChangeFile("txt"); }break; case "model":{ System.out.println("model"); this.isChangeFile("java"); }break; case "open":{ System.out.println("open"); //防止第一次打开空文件时，还没保存 if(this.origContent==null){ this.saved=true; } if(saved){ this.openFilePanel(); }else{ Save saveF=new Save("Save",this); this.openFilePanel(); } }break; case "save":{ System.out.println("save"); this.saveFile(); //this.setSaved(true); }break; case "saveAs":{ System.out.println("saveAs"); String str=content.getText(); //选择保存文件的路径 JFileChooser fileChoose=null; if(saveUrl==null){ fileChoose=new JFileChooser(); }else{ fileChoose=new JFileChooser(saveUrl); } FileNameExtensionFilter filter=new FileNameExtensionFilter("txt & java","java","txt"); //设置可以识别的文件 fileChoose.setFileFilter(filter); fileChoose.setDialogTitle("Save File"); fileChoose.showSaveDialog(save); fileChoose.setVisible(true); File outFile =fileChoose.getSelectedFile(); saveUrl=fileChoose.getSelectedFile().getPath(); PrintStream p=null; try{ p=new PrintStream(outFile); System.setOut(p); System.out.print(str); }catch(Exception a){ System.out.println("SaveAS File Error!!"); }finally{ p.close(); } }break; case "pageSet":{ System.out.println("pageSet"); }break; case "print":{ System.out.println("print"); }break; case "exit":{ System.out.println("exit"); System.exit(-1); }break; case "undoE":{ System.out.println("undoE"); }break; case "cutE":{ System.out.println("cutE"); if(this.content.getSelectedText()!=null){ this.copyContent=this.content.getSelectedText(); } this.content.replaceSelection(""); }break; case "copyE":{ System.out.println("copyE"); if(this.content.getSelectedText()!=null){ this.copyContent=this.content.getSelectedText(); } }break; case "pasteE":{ System.out.println("pasteE"); if(copyContent!=null){ this.content.replaceRange("", content.getSelectionStart(), content.getSelectionEnd()); } this.content.insert(copyContent, this.content.getSelectionStart()); }break; case "deleteE":{ System.out.println("deleteE"); this.content.replaceSelection(""); }break; case "findE":{ System.out.println("findE"); }break; case "findNextE":{ System.out.println("findNextE"); }break; case "replaceE":{ System.out.println("replaceE"); }break; case "goToE":{ System.out.println("goToE"); }break; case "selectAllE":{ System.out.println("selectAllE"); this.content.selectAll(); }break; case "timeDateE":{ System.out.println("timeDateE"); SimpleDateFormat df=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); //System.out.println(df.format(new Date())); this.content.insert(df.format(new Date()), content.getSelectionStart()); }break; case "wordWrap":{ System.out.println("wordWrap"); ImageIcon icon; if(this.content.getLineWrap()){ this.content.setLineWrap(false); icon=new ImageIcon(this.changeImageSize("img/notpad/wordWrap.png", BUTTONWIDTH-5, BUTTONHEIGHT-5)); this.wordWrap.setIcon(icon); }else{ this.content.setLineWrap(true); icon=new ImageIcon(this.changeImageSize("img/notpad/wordWrapNo.png", BUTTONWIDTH-5, BUTTONHEIGHT-5)); this.wordWrap.setIcon(icon); } }break; case "font":{ System.out.println("font"); FontPanel f=new FontPanel("Font",this); // this.content.setFont(new Font(f.getFontN(),f.getFontSytleN(),f.getSizeN())); }break; case "statusBar":{ System.out.println("statusBar"); }break; case "viewHelp":{ System.out.println("viewHelp"); }break; case "about":{ System.out.println("about"); About a=new About("About","1.0","feiquan","228332xxxxx@qq.com","xxx-xxxx-xxxx","https://www.baidu.com"); }break; case "pasteShortcut":{ System.out.println("pasteShortcut"); }break; } } @Override public void windowOpened(WindowEvent e) { // TODO Auto-generated method stub } @Override public void windowClosing(WindowEvent e) { // TODO Auto-generated method stub System.out .println("弹出是否选择保存的对话框"); if(saved){ Save saveF=new Save("Save",this); } } @Override public void windowClosed(WindowEvent e) { // TODO Auto-generated method stub } @Override public void windowIconified(WindowEvent e) { // TODO Auto-generated method stub } @Override public void windowDeiconified(WindowEvent e) { // TODO Auto-generated method stub } @Override public void windowActivated(WindowEvent e) { // TODO Auto-generated method stub } @Override public void windowDeactivated(WindowEvent e) { // TODO Auto-generated method stub } public static String getOpenUrl() { return openUrl; } public static void setOpenUrl(String openUrl) { JF_Notpad.openUrl = openUrl; } public static String getSaveUrl() { return saveUrl; } public static void setSaveUrl(String saveUrl) { JF_Notpad.saveUrl = saveUrl; } //保存文件其中包含了，判断文件是否存在 public void saveFile(){ String str=this.content.getText(); System.out.println("正在保存：\\n"+str); //判断文件是否存在,不存在则创建文件 File file=new File(openUrl); if(!file.exists()){ try{ file.createNewFile(); }catch(Exception a){ System.out.println("创建文件 "+file.getAbsolutePath()+" 失败！！"); } } PrintStream p=null; try{ p=new PrintStream(new File(openUrl)); System.setOut(p); System.out.print(str); saved=true; }catch(Exception a){ System.out.println("Save File Error!!"); saved=false; }finally{ p.close(); } } //判断文件是否修改过，并根据传入的属性判断新建那个文件 public void isChangeFile(String properties){ System.out.println("是否保存文件："+saved); //判断文件是否修改过 if(!(this.content.getText().equals(origContent))){ saved=false; } //如果内容为空，也视为已经保存 if(this.content.getText()==null||this.content.getText().equals(""))saved=true; System.out.println("判断后是否保存文件："+saved); if(saved){ switch(properties){ case "txt":{ this.content.setText(""); this.setTitle("notpad"); origContent=""; }break; case "java":{ this.setTitle("notpad"); String str="public class Notpad {\\n\\tpublic static void main (String[] ages) {\\n\\t\\t\\n\\t}\\n}"; this.content.setText(str); origContent=str; }break; } }else{ System.out .println("弹出是否选择保存的对话框"); Save saveF=new Save("Save",this); } System.out.println("经过保存面板后是否保存文件："+saved); } //打开选择打开文件面板，并选择文件 public void openFilePanel(){ origContent=this.content.getText(); //显示选择文件面板 JFileChooser fileChoose=null; if(openUrl==null){ fileChoose=new JFileChooser(); }else{ fileChoose=new JFileChooser(openUrl); } FileNameExtensionFilter filter=new FileNameExtensionFilter("txt & java","java","txt"); fileChoose.setFileFilter(filter); fileChoose.setDialogTitle("Open File"); fileChoose.showOpenDialog(null); fileChoose.setVisible(true); //得到文件 String url=fileChoose.getSelectedFile().getAbsolutePath(); //得到选择文件的路径 //设置保存面板显示的路径 JF_Notpad.setOpenUrl(url); Save saveF=new Save("Save",this); saveF.setVisible(false); saveF.setUrl(url); JLabel temp=saveF.getUrlL(); temp.setText(url+" ?"); saveF.setUrlL(temp); String name=fileChoose.getSelectedFile().getName(); this.setTitle(name+" - Notpad"); //设置主窗口标题 //文件以上是关于java实现Windows记事本的主要内容，如果未能解决你的问题，请参考以下文章