Java流与文件操作汇总

txtEditor.copy();
}
});
miCopy.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_C, InputEvent.CTRL_MASK));
menu_1.add(miCopy);
JMenuItem miCut = new JMenuItem("\u526A\u5207");
openFileActionPerformed(e);
}
});
miOpenFile.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_O, InputEvent.CTRL_MASK));
menu.add(miOpenFile);
JMenuItem miSaveFile = new JMenuItem("\u4FDD\u5B58\u6587\u4EF6");
import java.awt.Color;
import java.awt.EventQueue;
import javax.swing.JColorChooser;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JPanel;
}
});
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 450, 300);
JMenuBar menuBar = new JMenuBar();
setJMenuBar(menuBar);
JMenu menu = new JMenu("\u6587\u4EF6");
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.print.PrinterJob;
import java.io.BufferedReader;
import java.io.BufferedWriter;
JMenuItem miExit = new JMenuItem("\u9000\u51FA");
miExit.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_E, InputEvent.CTRL_MASK));
miExit.addActionListener(new ActionListener() {
menuBar.add(menu);
JMenuItem miOpenFile = new JMenuItem("\u6253\u5F00\u6587\u4EF6");
miOpenFile.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
menu_1.add(miCut);
JMenuItem miPaste = new JMenuItem("\u7C98\u8D34");
miPaste.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
import javax.swing.JButton;
import javax.swing.ImageIcon;
public class NotePadPlus extends JFrame {
private JPanel contentPane;
private JTextArea txtEditor;
saveAsActionPerformed(e);
}
});
miSaveAs.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S, InputEvent.CTRL_MASK | InputEvent.ALT_MASK));
menu.add(miSaveAs);
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;
import javax.swing.border.EmptyBorder;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import javax.swing.filechooser.FileFilter;
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");
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;
}
}
});
}
/**
* Create the frame.
*/
public NotePadPlus() {
addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
frmMainWindowClosing(e);
miCut.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
txtEditor.cut();
}
});
miCut.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_X, InputEvent.CTRL_MASK));
menu.add(miSaveFile);
JMenuItem miSaveAs = new JMenuItem("\u53E6\u5B58\u4E3A...");
miSaveAs.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
NotePadPlus frame = new NotePadPlus();
frame.setVisible(true);
}catch (Exception e) {
e.printStackTrace();
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) {
import java.awt.event.ActionEvent;
import javax.swing.JPopupMenu;
import java.awt.Component;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
editorKeyPressed(e);
}
});
//文件改变事件
txtEditor.getDocument().addDocumentListener(new DocumentListener() {
public void changedUpdate(DocumentEvent e) {
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
contentPane.setLayout(new BorderLayout(0, 0));
setContentPane(contentPane);
JScrollPane scrollPane = new JScrollPane();
miColor.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
colorAddActionPerformed(e);
}
});
miColor.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_C, InputEvent.CTRL_MASK | InputEvent.ALT_MASK));
实验报告
课程名称
面向对象程序设计
实验名称
实验八流与文件操作
日期
2016-11-18
学生学号
姓名
班级
实验目的：
通过本次实验，要求学生能进一步掌握流与文件的操作方法。
实验条件：
电脑一台、能上网查阅资料。
1.在课堂代码的基础上，理解相关的文件操作部分的代码，进一步完善记事本的设计。
源代码：
import java.awt.BorderLayout;
contentPane.add(scrollPane, BorderLayout.CENTER);
txtEditor = new JTextArea();
txtEditor.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
menu_1.add(miColor);
JMenuItem miCopy = new JMenuItem("\u62F7\u8D1D");
miCopy.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
txtEditor.paste();
}
});
miPaste.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_V, InputEvent.CTRL_MASK));
menu_1.add(miPaste);
contentPane = new JPanel();
import jBaidu Nhomakorabeavax.swing.JTextArea;
import javax.swing.JMenuBar;
import javax.swing.JMenu;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
miSaveFile.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
//保存
saveFile();
}
});
miSaveFile.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S, InputEvent.CTRL_MASK));