Java流与文件操作文档格式.docx
《Java流与文件操作文档格式.docx》由会员分享，可在线阅读，更多相关《Java流与文件操作文档格式.docx（18页珍藏版）》请在冰点文库上搜索。
importjavax.swing.event.DocumentListener;
importjavax.swing.filechooser.FileFilter;
importjavax.swing.JTextArea;
importjavax.swing.JMenuBar;
importjavax.swing.JMenu;
importjavax.swing.JMenuItem;
importjavax.swing.JOptionPane;
importjavax.swing.JScrollPane;
importjava.awt.event.WindowAdapter;
importjava.awt.event.WindowEvent;
importjava.awt.print.PrinterJob;
importjava.io.BufferedReader;
importjava.io.BufferedWriter;
importjava.io.File;
importjava.io.FileNotFoundException;
importjava.io.FileReader;
importjava.io.FileWriter;
importjava.io.IOException;
importjava.awt.event.ActionListener;
importjava.awt.event.ActionEvent;
importjavax.swing.JPopupMenu;
importjava.awt.Component;
importjava.awt.event.MouseAdapter;
importjava.awt.event.MouseEvent;
importjavax.swing.KeyStroke;
importjava.awt.event.KeyEvent;
importjava.awt.event.InputEvent;
importjavax.swing.JToolBar;
importjavax.swing.JLabel;
importjava.awt.event.KeyAdapter;
importjavax.swing.JButton;
importjavax.swing.ImageIcon;
publicclassNotePadPlusextendsJFrame{
privateJPanelcontentPane;
privateJTextAreatxtEditor;
privateStringfilePath;
privateStringfileName;
privateJLabellblMsg=null;
//自动换行和状态栏
booleanflag=false;
/**
*Launchtheapplication.
*/
publicstaticvoidmain（String[]args）{
EventQueue.invokeLater（newRunnable（）{
publicvoidrun（）{
try{
NotePadPlusframe=newNotePadPlus（）;
frame.setVisible（true）;
}catch（Exceptione）{
e.printStackTrace（）;
}
}
}）;
}
*Createtheframe.
publicNotePadPlus（）{
addWindowListener（newWindowAdapter（）{
@Override
publicvoidwindowClosing（WindowEvente）{
frmMainWindowClosing（e）;
setDefaultCloseOperation（JFrame.EXIT_ON_CLOSE）;
setBounds（100,100,450,300）;
JMenuBarmenuBar=newJMenuBar（）;
setJMenuBar（menuBar）;
JMenumenu=newJMenu（"
\u6587\u4EF6"
）;
menuBar.add（menu）;
JMenuItemmiOpenFile=newJMenuItem（"
\u6253\u5F00\u6587\u4EF6"
miOpenFile.addActionListener（newActionListener（）{
publicvoidactionPerformed（ActionEvente）{
openFileActionPerformed（e）;
miOpenFile.setAccelerator（KeyStroke.getKeyStroke（KeyEvent.VK_O,InputEvent.CTRL_MASK））;
menu.add（miOpenFile）;
JMenuItemmiSaveFile=newJMenuItem（"
\u4FDD\u5B58\u6587\u4EF6"
miSaveFile.addActionListener（newActionListener（）{
//保存
saveFile（）;
miSaveFile.setAccelerator（KeyStroke.getKeyStroke（KeyEvent.VK_S,InputEvent.CTRL_MASK））;
menu.add（miSaveFile）;
JMenuItemmiSaveAs=newJMenuItem（"
\u53E6\u5B58\u4E3A..."
miSaveAs.addActionListener（newActionListener（）{
saveAsActionPerformed（e）;
miSaveAs.setAccelerator（KeyStroke.getKeyStroke（KeyEvent.VK_S,InputEvent.CTRL_MASK|InputEvent.ALT_MASK））;
menu.add（miSaveAs）;
JMenuItemmiExit=newJMenuItem（"
\u9000\u51FA"
miExit.setAccelerator（KeyStroke.getKeyStroke（KeyEvent.VK_E,InputEvent.CTRL_MASK））;
miExit.addActionListener（newActionListener（）{
notePadPlusClosing（）;
menu.add（miExit）;
JMenumenu_1=newJMenu（"
\u7F16\u8F91"
menuBar.add（menu_1）;
JMenuItemmiColor=newJMenuItem（"
\u989C\u8272"
miColor.addActionListener（newActionListener（）{
colorAddActionPerformed（e）;
miColor.setAccelerator（KeyStroke.getKeyStroke（KeyEvent.VK_C,InputEvent.CTRL_MASK|InputEvent.ALT_MASK））;
menu_1.add（miColor）;
JMenuItemmiCopy=newJMenuItem（"
\u62F7\u8D1D"
miCopy.addActionListener（newActionListener（）{
publicvoidactionPerformed（ActionEventarg0）{
txtEditor.copy（）;
miCopy.setAccelerator（KeyStroke.getKeyStroke（KeyEvent.VK_C,InputEvent.CTRL_MASK））;
menu_1.add（miCopy）;
JMenuItemmiCut=newJMenuItem（"
\u526A\u5207"
miCut.addActionListener（newActionListener（）{
txtEditor.cut（）;
miCut.setAccelerator（KeyStroke.getKeyStroke（KeyEvent.VK_X,InputEvent.CTRL_MASK））;
menu_1.add（miCut）;
JMenuItemmiPaste=newJMenuItem（"
\u7C98\u8D34"
miPaste.addActionListener（newActionListener（）{
txtEditor.paste（）;
miPaste.setAccelerator（KeyStroke.getKeyStroke（KeyEvent.VK_V,InputEvent.CTRL_MASK））;
menu_1.add（miPaste）;
contentPane=newJPanel（）;
contentPane.setBorder（newEmptyBorder（5,5,5,5））;
contentPane.setLayout（newBorderLayout（0,0））;
setContentPane（contentPane）;
JScrollPanescrollPane=newJScrollPane（）;
contentPane.add（scrollPane,BorderLayout.CENTER）;
txtEditor=newJTextArea（）;
txtEditor.addKeyListener（newKeyAdapter（）{
publicvoidkeyPressed（KeyEvente）{
editorKeyPressed（e）;
//文件改变事件
txtEditor.getDocument（）.addDocumentListener（newDocumentListener（）{
publicvoidchangedUpdate（DocumentEvente）{
flag=true;
publicvoidinsertUpdate（DocumentEvente）{
publicvoidremoveUpdate（DocumentEvente）{
scrollPane.setViewportView（txtEditor）;
JPopupMenupopupMenu=newJPopupMenu（）;
addPopup（txtEditor,popupMenu）;
JMenuItempmiCopy=newJMenuItem（"
pmiCopy.addActionListener（newActionListener（）{
pmiCopy.setAccelerator（KeyStroke.getKeyStroke（KeyEvent.VK_C,InputEvent.CTRL_MASK））;
popupMenu.add（pmiCopy）;
JMenuItempmiCut=newJMenuItem（"
pmiCut.addActionListener（newActionListener（）{
pmiCut.setAccelerator（KeyStroke.getKeyStroke（KeyEvent.VK_X,InputEvent.CTRL_MASK））;
popupMenu.add（pmiCut）;
JMenuItempmiPaste=newJMenuItem（"
pmiPaste.addActionListener（newActionListener（）{
pmiPaste.setAccelerator（KeyStroke.getKeyStroke（KeyEvent.VK_V,InputEvent.CTRL_MASK））;
popupMenu.add（pmiPaste）;
JToolBartb_tools=newJToolBar（）;
scrollPane.setColumnHeaderView（tb_tools）;
JButtonbtnSave=newJButton（"
"
btnSave.addActionListener（newActionListener（）{
btnSave.setIcon（newImageIcon（NotePadPlus.class.getResource（"
/images/save.png"
）））;
tb_tools.add（btnSave）;
JButtonbtnCopy=newJButton（"
btnCopy.addActionListener（newActionListener（）{
btnCopy.setIcon（newImageIcon（NotePadPlus.class.getResource（"
/images/copy.png"
tb_tools.add（btnCopy）;
JButtonbtnCut=newJButton（"
btnCut.addActionListener（newActionListener（）{
btnCut.setIcon（newImageIcon（NotePadPlus.class.getResource（"
/images/cut.png"
tb_tools.add（btnCut）;
JButtonbtnPaste=newJButton（"
btnPaste.addActionListener（newActionListener（）{
btnPaste.setIcon（newImageIcon（NotePadPlus.class.getResource（"
/images/paste.png"
tb_tools.add（btnPaste）;
JToolBartb_status=newJToolBar（）;
contentPane.add（tb_status,BorderLayout.SOUTH）;
lblMsg=newJLabel（"
\u5F53\u524D\u5B57\u6570:
0\u5F53\u524D\u884C\u6570:
0"
tb_status.add（lblMsg）;
if（fileName==null||fileName=="
）{
this.setTitle（"
Untitled.txt"
}else{
fileName"
}
this.setLocationRelativeTo（null）;
this.setExtendedState（JFrame.MAXIMIZED_BOTH）;
protectedvoideditorKeyPressed（KeyEvente）{
//TODOAuto-generatedmethodstub
lblMsg.setText（"
当前字数:
"
+String.valueOf（txtEditor.getText（）.trim（）.length（））+"
+"
当前行数:
+String.valueOf（txtEditor.getLineCount（）））;
*另存为
*
*@parame
protectedvoidsaveAsActionPerformed（ActionEvente）{
JFileChooserdlg=newJFileChooser（）;
dlg.setFileFilter（newTxtFileFilter（"
.txt"
"
文本文件（*.txt）"
））;
intresult=dlg.showSaveDialog（this）;
//打开"
另存为文件"
对话框
if（result==JFileChooser.APPROVE_OPTION）{
Filefile=dlg.getSelectedFile（）;
//设置编辑器标题显示成文件名
this.setTitle（file.getName（））;
this.filePath=file.getPath（）;
this.fileName=file.getName（）;
//把文件的内容读到文本框
FileWriterfw;
try{
fw=newFileWriter（file）;
BufferedWriterbw=newBufferedWriter（fw）;
//把文本框的内容全部写到文件
fw.write（txtEditor.getText（））;
bw.close（）;
fw.close（）;
}catch（FileNotFoundExceptione1）{
//TODOAuto-generatedcatchblock
e1.printStackTrace（）;
}catch（IOExceptione1）{
*打开文件操作
protectedvoidopenFileActionPerformed（ActionEvente）{
TxtFileFiltertxtFileFilter=newTxtFileFilter（"
TxtFi
升级会员 