notepad.java

用java写的简单记事本程序,看看。还行吧。

import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.awt.GraphicsEnvironment;
import javax.swing.*;
import java.util.*;
import java.awt.Graphics;
class MyTextPad extends Frame implements ActionListener
{
    JTextArea text;
    JScrollPane jsp;
    PopupMenu popm;
    Date date=new Date();
    String str="";
    Dialog d,About;
    Choice c1,c2,c3;
    Button btn1,btn2;
    String Str1="宋体",Str2="普通",Str3="15";
    int temp=0;
    int Red=0,Green=0,Blue=0;
    Label lFind = new Label("查找字符串:");
    Label lReplace = new Label("替换字符串:");
    TextField tFind = new TextField(10);
    TextField tReplace = new TextField(10);
    Button bFind = new Button("查找");
    Button bReplace = new Button("替换");
    Button bReplaceAll=new Button("替换所有");
    Dialog dialog;
    Dialog findD;
    public MyTextPad(String str)
    {
        super(str);
        text=new JTextArea();
        text.setFont(new Font("宋体",0,15));
        jsp=new JScrollPane(text);
        add("Center",jsp);
                findD=new Dialog(this);
        addWindowListener(new WindowAdapter()
        {
                public void windowClosing(WindowEvent e)
        {
            dispose();
        }
        }
        );
        d=new Dialog(this,"字体选择");
        d.setBounds(150,150,320,200);
        findD.addWindowListener(new WindowAdapter()
        {
            public void windowClosing(WindowEvent e)
            {
                findD.setVisible(false);
            }
        }
                );
        d.addWindowListener(new WindowAdapter()
        {
            public void windowClosing(WindowEvent e)
            {
                d.setVisible(false);
            }
        }
                );
        c1=new Choice();c2=new Choice();c3=new Choice();
        GraphicsEnvironment ge=GraphicsEnvironment.getLocalGraphicsEnvironment();
        String fontName[]=ge.getAvailableFontFamilyNames();
        for(int i=0;i<fontName.length;i++)
        {
            c1.add(fontName[i]);
        }
        c2.add("粗体");
        c2.add("斜体");
        c2.add("粗体与斜体");
        c2.add("普通");
        for(int i=8;i<100;i++)
        {
            c3.add(""+i);
        }
        Panel p1=new Panel();
        Panel p2=new Panel();
        p1.add(c1);
        p1.add(c2);
        p1.add(c3);
        btn1=new Button("确定");
        btn2=new Button("取消");
        d.setLayout(new GridLayout(5,3));
        d.add(p1);
        p2.add(btn1);
        btn1.addActionListener(this);
        btn2.addActionListener(this);
        p2.add(btn2);
        d.add(p2);
        About=new Dialog(this,"关于");
        About.addWindowListener(new  WindowAdapter()
        {
            public void windowClosing(WindowEvent e)
            {
                About.setVisible(false);
            }
        }
                );
        About.setBounds(300,300,150,150);
        About.add(new Label("蒋俊涛的计事体1.0版本"));
        Menu mn=new Menu("文件");
        MenuItem miNewFile=new MenuItem("新建",new MenuShortcut(KeyEvent.VK_N));
        MenuItem miOpenFile=new MenuItem("打开",new MenuShortcut(KeyEvent.VK_O));
        MenuItem miSaveFile=new MenuItem("保存",new MenuShortcut(KeyEvent.VK_S));
        MenuItem miExit=new MenuItem("退出",new MenuShortcut(KeyEvent.VK_E));
        mn.add(miNewFile);
        mn.add(miOpenFile);
        mn.add(miSaveFile);
        mn.addSeparator();
        mn.add(miExit);
        miNewFile.addActionListener(this);
        miOpenFile.addActionListener(this);
        miSaveFile.addActionListener(this);
        miExit.addActionListener(this);
        Menu mn1=new Menu("编辑");
        MenuItem miSelectAll=new MenuItem("全选",new MenuShortcut(KeyEvent.VK_P));
        MenuItem miClear=new MenuItem("清空",new MenuShortcut(KeyEvent.VK_S));
        MenuItem miCopy=new MenuItem("复制",new MenuShortcut(KeyEvent.VK_C));
        MenuItem miPaste=new MenuItem("粘贴",new MenuShortcut(KeyEvent.VK_V));
        MenuItem miCut=new MenuItem("剪切",new MenuShortcut(KeyEvent.VK_T));
        MenuItem miFind=new MenuItem("查找",new MenuShortcut(KeyEvent.VK_D));
        MenuItem miReplace=new MenuItem("替换",new MenuShortcut(KeyEvent.VK_R));
        MenuItem miAuto=new MenuItem("自动换行");
        miAuto.addActionListener(this);
        mn1.add(miSelectAll);
        mn1.add(miClear);
        mn1.add(miCopy);
        mn1.add(miPaste);
        mn1.add(miCut);
        mn1.addSeparator();
        mn1.add(miFind);
        mn1.add(miReplace);
        mn1.add(miAuto);
        miSelectAll.addActionListener(this);
        miClear.addActionListener(this);
        miCopy.addActionListener(this);
        miPaste.addActionListener(this);
        miCut.addActionListener(this);
        miFind.addActionListener(this);
        miReplace.addActionListener(this);
        Menu mn2=new Menu("格式");
        MenuItem miFont=new MenuItem("字体",new MenuShortcut(KeyEvent.VK_F));
        MenuItem miColor=new MenuItem("颜色选择",new MenuShortcut(KeyEvent.VK_K));
        MenuItem miTime=new MenuItem("插入时间",new MenuShortcut(KeyEvent.VK_T));
        miFont.addActionListener(this);
        miColor.addActionListener(this);
        miTime.addActionListener(this);
        mn2.add(miFont);
        mn2.add(miColor);
        mn2.add(miTime);
        Menu mn3=new Menu("帮助");
        MenuItem miAbout=new MenuItem("关于",new MenuShortcut(KeyEvent.VK_A));
        miAbout.addActionListener(this);
        mn3.add(miAbout);
        FileDialog findDlg = new FileDialog(this);
        Panel p5=new Panel();
        Panel p6=new Panel();
        Panel p7=new Panel();  p7.setLayout(new GridLayout(1,2,30,30));
        p5.add(lFind); p5.add(tFind); p5.add(bFind);     tFind.addActionListener(this);   bFind.addActionListener(this);
        p6.add(lReplace); p6.add(tReplace); p7.add(bReplace); p7.add(bReplaceAll); p6.add(p7);
        tReplace.addActionListener(this);   bReplace.addActionListener(this);bReplaceAll.addActionListener(this);
        findD.setLayout(new GridLayout(2,1,10,10));
        findD.setResizable(false);
        findD.add(p5);
        findD.add(p6);
        findD.setBounds(100,100,260,190);
        //弹出PopupMenu
       popm=new PopupMenu();
       MenuItem OpenFile=new MenuItem("打开");
       MenuItem SaveFile=new MenuItem("保存");
       MenuItem SelectAll=new MenuItem("全选");
       MenuItem Copy=new MenuItem("复制");
       MenuItem Paste=new  MenuItem("粘贴");
       MenuItem Cut=new MenuItem("剪切");
       OpenFile.addActionListener(this);
       SaveFile.addActionListener(this);
       SelectAll.addActionListener(this);
       Copy.addActionListener(this);
       Paste.addActionListener(this);
      Cut.addActionListener(this);
       popm.add(OpenFile);
       popm.add(SaveFile);
       popm.add(SelectAll);
       popm.add(Copy);
       popm.add(Paste);
       popm.add(Cut);
       text.add(popm);
       text.addMouseListener(new MyMouseEvent(this));
        MenuBar Bar=new MenuBar();
        Bar.add(mn);
        Bar.add(mn1);
        Bar.add(mn2);
        Bar.add(mn3);
        setMenuBar(Bar);
        setSize(800,600);
        setVisible(true);
    }
    class MyMouseEvent extends MouseAdapter
    {
                        MyTextPad myParentFrame;
                        MyMouseEvent(MyTextPad myf)
                        {
                                myParentFrame=myf;

                        }
                        public void mouseReleased(MouseEvent e)
                        {
                                if(e.isPopupTrigger())
                                  myParentFrame.popm.show((Component)e.getSource(),e.getX(),e.getY());
                        }

        }
    public void actionPerformed(ActionEvent e)
    {
        String strCmd=e.getActionCommand();
        if(strCmd.equals("新建"))
        {
            text.setFont(new Font(Str1,Font.PLAIN,15));
            text.setForeground(Color.black);
            text.setText("");
        }
        try
        {
            if(strCmd.equals("打开"))
            {
                openFile();
            }
            if(strCmd.equals("保存"))
            {
                saveFile();
            }
        }catch(IOException e1){}
        if(strCmd.equals("退出"))
        {
                        System.exit(0);
                }
        if(strCmd.equals("全选"))