Java流与文件操作汇总

private String filePath;
private String fileName;
private JLabel lblMsg = null;
//自动换行和状态栏
boolean flag = false;
/**
* Launch the application.
*/
public static void main(String[] args) {
miColor.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
colorAddActionPerformed(e);
}
});
miColor.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_C, InputEvent.CTRL_MASK | InputEvent.ALT_MASK));
import java.awt.event.ActionEvent;
import javax.swing.JPopupMenu;
import ponent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
menu_1.add(miColor);
JMenuItem miCopy = new JMenuItem("\u62F7\u8D1D");
miCopy.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
openFileActionPerformed(e);
}
});
miOpenFile.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_O, InputEvent.CTRL_MASK));
menu.add(miOpenFile);
JMenuItem miSaveFile = new JMenuItem("\u4FDD\u5B58\u6587\u4EF6");
contentPane.add(scrollPane, BorderLayout.CENTER);
txtEditor = new JTextArea();
txtEditor.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
saveAsActionPerformed(e);
}
});
miSaveAs.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S, InputEvent.CTRL_MASK | InputEvent.ALT_MASK));
menu.add(miSaveAs);
import java.awt.Color;
import java.awt.EventQueue;
import javax.swing.JColorChooser;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import javax.swing.filechooser.FileFilter;
txtEditor.copy();
}
});
miCopy.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_C, InputEvent.CTRL_MASK));
menu_1.add(miCopy);
JMenuItem miCut = new JMenuItem("\u526A\u5207");
public void actionPerformed(ActionEvent e) {
notePadPlusClosing();
}
});
menu.add(miExit);
JMenu menu_1 = new JMenu("\u7F16\u8F91");
menuBar.add(menu_1);
JMenuItem miColor = new JMenuItem("\u989C\u8272");
txtEditor.paste();
}
});
miPaste.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_V, InputEvent.CTRL_MASK));
menu_1.add(miPaste);
contentPane = new JPanel();
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
NotePadPlus frame = new NotePadPlus();
frame.setVisible(true);
}catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public NotePadPlus() {
addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
frmMainWindowClosing(e);
contentPane.setBorder(new EmptyBorder(5, 5, ቤተ መጻሕፍቲ ባይዱ, 5));
contentPane.setLayout(new BorderLayout(0, 0));
setContentPane(contentPane);
JScrollPane scrollPane = new JScrollPane();
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.print.PrinterJob;
import java.io.BufferedReader;
import java.io.BufferedWriter;
editorKeyPressed(e);
}
});
//文件改变事件
txtEditor.getDocument().addDocumentListener(new DocumentListener() {
public void changedUpdate(DocumentEvent e) {
import javax.swing.JTextArea;
import javax.swing.JMenuBar;
import javax.swing.JMenu;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
menuBar.add(menu);
JMenuItem miOpenFile = new JMenuItem("\u6253\u5F00\u6587\u4EF6");
miOpenFile.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
menu.add(miSaveFile);
JMenuItem miSaveAs = new JMenuItem("\u53E6\u5B58\u4E3A...");
miSaveAs.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
import javax.swing.KeyStroke;
import java.awt.event.KeyEvent;
import java.awt.event.InputEvent;
import javax.swing.JToolBar;
import javax.swing.JLabel;
import java.awt.event.KeyAdapter;
JMenuItem miExit = new JMenuItem("\u9000\u51FA");