【Java】实现记事本(完整版）

import java.awt.BorderLayout;

import java.awt.Color;

import java.awt.Font;

import java.awt.GraphicsEnvironment;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.JButton;

import javax.swing.JCheckBox;

import javax.swing.JColorChooser;

import javax.swing.JComboBox;

import javax.swing.JFileChooser;

import javax.swing.JFrame;

import javax.swing.JMenu;

import javax.swing.JMenuBar;

import javax.swing.JMenuItem;

import javax.swing.JScrollPane;

import javax.swing.JTextArea;

import javax.swing.JToolBar;

import javax.swing.filechooser.FileNameExtensionFilter;

import chenhao.io.TextTool;

public class TextPad {

private JTextArea contentArea;

private JFrame frame;

private String fileName;

public TextPad() {

frame = new JFrame("记事本");

frame.setSize(500, 500);

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

// 添加菜單

JMenuBar menuBar = new JMenuBar();

JMenu menu = new JMenu("文件");

JMenuItem newItem = new JMenuItem("新建");

newAction(newItem);

menu.add(newItem);

JMenuItem openItem = new JMenuItem("打开");

openAction(openItem);

menu.add(openItem);

JMenuItem saveItem = new JMenuItem("保存");