java记事本1.2版

功能：实现了新建，打开，保存，退出，复制，剪切，粘贴等功能

效果图：

代码：

/**
 * 
 */
package com.niit.javagui;

import java.awt.Color;
import java.awt.MenuBar;
import java.awt.event.ActionEvent;
import java.awt.event.InputEvent;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.KeyEvent;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;

import javax.swing.AbstractAction;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JTabbedPane;
import javax.swing.JTextPane;
import javax.swing.KeyStroke;
import javax.swing.text.DefaultStyledDocument;

/**
 * @author: Annie
 * @date:2016年5月30日
 * @description:简单的记事本
 */
public class Notepad extends JFrame {
    public static void main(String[] args) {
        new Notepad();
    }

    JTabbedPane tabbedPane;
    JPanel jp1,jp2,jp3;
    JMenuBar menuBar;
    JMenu filemenu,editMenu,formatMenu,helpmenu,checkMenu;
    JMenuItem itemNew,itemOpen,itemSave,itemSaveAs,itemSet,itemPrint,itemExit,
    itemAutomatic,itemFont,itemaStatusBar,itemaCheckHelp,itemAbout,itemCopy,itemCut,itemPast;
    JTextPane textpane;
    JFileChooser fileChooser; 
    public Notepad(){
        setVisible(true);
        setSize(400,400);
        setTitle("记事本");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        instantiationObject();    
        keyWord();
        addFunction();


    }

    /**
     * 实例化对象方法
     * */
    public void instantiationObject(){
        jp1 = new JPanel();
        jp2 = new JPanel();
        jp3 = new JPanel();
        tabbedPane = new JTabbedPane(JTabbedPane.BOTTOM);
        menuBar = new JMenuBar();
        filemenu = new JMenu("文件（F）");
        editMenu = new JMenu("编辑（E）");
        formatMenu = new JMenu("格式（o）");
        checkMenu = new JMenu("查看（V）");
        helpmenu = new JMenu("帮助（H）");

        itemNew = new JMenuItem(new newAction());
        itemOpen = new JMenuItem(new OpenAction());
        itemSave = new JMenuItem(new SaveAction());
        itemSaveAs = new JMenuItem("另存为");
        itemSet = new JMenuItem("页面设置");
        itemPrint = new JMenuItem("打印");
        itemExit = new  JMenuItem(new ExistAction());

        itemCopy = new JMenuItem(new CopyAction());
        itemPast = new JMenuItem(new PasteAction());
        itemCut = new JMenuItem(new CutAction());

        itemAutomatic = new JMenuItem("自动转行");
        itemFont = new JMenuItem("字体");

        itemaStatusBar = new JMenuItem("状态栏");

        itemaCheckHelp = new JMenuItem("查看帮助");
        itemAbout = new JMenuItem("关于记事本");

        textpane = new JTextPane(); //文本窗格，编辑窗口

        fileChooser = new JFileChooser();//文件选择器


    }

    /**
     * 添加组件方法
     * */
    public void addFunction(){
        setJMenuBar(menuBar);

        menuBar.add(filemenu);
        menuBar.add(editMenu);
        menuBar.add(formatMenu);
        menuBar.add(checkMenu);
        menuBar.add(helpmenu);

        filemenu.add(itemNew);
        filemenu.add(itemOpen);
        filemenu.add(itemSave);
        filemenu.add(itemSaveAs);
        filemenu.addSeparator();
        filemenu.add(itemSet);
        filemenu.add(itemPrint);
        filemenu.add(itemExit);

        editMenu.add(itemCopy);
        editMenu.add(itemPast);
        editMenu.add(itemCut);

        formatMenu.add(itemAutomatic);
        formatMenu.add(itemFont);

        checkMenu.add(itemaStatusBar);

        helpmenu.add(itemaCheckHelp);
        helpmenu.add(itemAbout);

        add(textpane);

    }

    /**
     * 实例化对象方法
     * */
    public void keyWord(){
        itemNew.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_N,InputEvent.CTRL_MASK));
        itemOpen.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_O,InputEvent.CTRL_MASK));
        itemSave.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S,InputEvent.CTRL_MASK));
        itemSaveAs.setAccelerator(KeyStroke.getKeyStroke('A'));
        itemSet.setAccelerator(KeyStroke.getKeyStroke('U'));
        itemPrint.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_P,InputEvent.CTRL_MASK));
        itemExit.setAccelerator(KeyStroke.getKeyStroke('X'));

        itemAutomatic.setAccelerator(KeyStroke.getKeyStroke('W'));
        itemFont.setAccelerator(KeyStroke.getKeyStroke('F'));

        itemaStatusBar.setAccelerator(KeyStroke.getKeyStroke('S'));

        itemaCheckHelp.setAccelerator(KeyStroke.getKeyStroke('H'));
        itemAbout.setAccelerator(KeyStroke.getKeyStroke('A'));
    }




    class  newAction extends AbstractAction{
        public newAction(){
            super("新建");
        }        
        @Override
        public void actionPerformed(ActionEvent e) {
            textpane.setDocument(new DefaultStyledDocument());

        }

    }

    class OpenAction extends AbstractAction{
        public OpenAction() {
            super("打开");
        }
        @Override
        public void actionPerformed(ActionEvent e) {
            int i = fileChooser.showOpenDialog(Notepad.this); // 显示打开文件选择对话框
            if(i == JFileChooser.APPROVE_OPTION){//点击对话框中打开选项
                File f = fileChooser.getSelectedFile();//得到选择的文件
                try {
                    InputStream is = new FileInputStream(f);
                    textpane.read(is, "HTMLDocument"); //读入文件到文本窗格

                } catch (Exception e1) {
                    e1.printStackTrace();
                }
            }

        }

    }

    class SaveAction extends AbstractAction{
        public SaveAction() {
            super("保存");
        }
        @Override
        public void actionPerformed(ActionEvent e) {
            int i =fileChooser.showSaveDialog(Notepad.this);
            if(i == JFileChooser.APPROVE_OPTION ){
                /* 1.得到选择的文件   2.得到输出流  3.写入 */
                File f =fileChooser.getSelectedFile();
                try {
                    OutputStream out = new FileOutputStream(f);
                    out.write(textpane.getText().getBytes());
                } catch (Exception e1) {
                    e1.printStackTrace();
                }
            }
        }

    }

    class ExistAction extends AbstractAction{
        public     ExistAction(){
            super("退出");
        }
        @Override
        public void actionPerformed(ActionEvent e) {
            System.exit(0);

        }
    }


    class CutAction extends AbstractAction { //剪切命令
        public CutAction() {
            super("剪切");
        }
        public void actionPerformed(ActionEvent e) {
            textpane.cut(); //调用文本窗格的剪切命令
        } 
    }

    class CopyAction extends AbstractAction { //拷贝命令
        public CopyAction() {
            super("复制");
        }
        public void actionPerformed(ActionEvent e) {
            textpane.copy(); //调用文本窗格的拷贝命令
        }
    }

    class PasteAction extends AbstractAction { //粘贴命令
        public PasteAction() {
            super("粘贴");
        }
        public void actionPerformed(ActionEvent e) {
            textpane.paste(); //调用文本窗格的粘贴命令
        }
    }

}