「Java记事本课设类」基于java的记事本程序设计
本篇文章给大家谈谈Java记事本课设类，以及基于java的记事本程序设计对应的知识点，希望对各位有所帮助，不要忘了收藏本站喔。
本文目录一览：
急求 日历记事本课程设计报告 java编写
日历记事本课程设计报告
java编写
/*
说明:主程序
*/
import
java.util.Calendar;
import
javax.swing.*;
import
java.awt.*;
import
java.awt.event.*;
import
java.io.*;
import
java.util.Hashtable;
public
class
CalendarPad
extends
JFrame
implements
MouseListener
{
int
year,month,day;
Hashtable
hashtable;
File
file;
JTextField
showDay[];
JLabel
title[];
Calendar
日历;
int
星期几;
NotePad
notepad=null;
Month
负责改变月;
Year
负责改变年;
String
星期[]={"星期日","星期一","星期二","星期三","星期四","星期五","星期六"};
JPanel
leftPanel,rightPanel;
public
CalendarPad(int
year,int
month,int
day)
{
leftPanel=new
JPanel();
//左边日历...........
JPanel
leftCenter=new
JPanel();
JPanel
leftNorth=new
JPanel();
leftCenter.setLayout(new
GridLayout(7,7));
rightPanel=new
JPanel();
this.year=year;
this.month=month;
this.day=day;
负责改变年=new
Year(this);
负责改变年.setYear(year);
负责改变月=new
Month(this);
负责改变月.setMonth(month);
title=new
JLabel[7];
showDay=new
JTextField[42];
for(int
j=0;j7;j++)
{
title[j]=new
JLabel();
title[j].setText(星期[j]);
title[j].setBorder(BorderFactory.createRaisedBevelBorder());
leftCenter.add(title[j]);
}
........
看下是不是收到了啊
额外人提问
java课程设计－－－－记事本
//package net.src.net;
import javax.swing.*;
import javax.swing.event.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.awt.color.*;
import java.awt.font.*;
import javax.swing.undo.*;
public class Note extends JFrame
{
boolean isChange=false;
boolean wasChange=false;
JMenuBar menuBar=new JMenuBar();
JMenu menuFile=new JMenu("File");
JMenuItem menuFileOpen=new JMenuItem("Open..");
JMenuItem menuFileSave=new JMenuItem("Save..");
JMenuItem menuFileExit=new JMenuItem("Exit");
JMenu menuEdit=new JMenu("Edit");
JMenuItem menuFileCut=new JMenuItem("Cut");
JMenuItem font=new JMenuItem("Font");
JMenuItem menuFilePaste=new JMenuItem("Paste");
JTextArea fileArea=new JTextArea();
public Note()
{
this.setTitle("记事本");
Toolkit tool=this.getToolkit();//窗口图标！
Image myimage=tool.getImage("戒指.jpg");
this.setIconImage(myimage);
setDefaultCloseOperation(DO_NOTHING_ON_CLOSE);
addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
exit();
}
});
menuFileOpen.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
fileOpen_actionPerformed(e);
}
});
menuFileSave.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
fileSave_actionPerformed(e);
}
});
menuFileExit.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
fileExit_actionPerformed(e);
}
});
menuFileCut.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
fileCut_actionPerformed(e);
}
});
menuFilePaste.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
filePaste_actionPerformed(e);
}
});
font.addActionListener(new ActionListener ()
{
public void actionPerformed(ActionEvent e)
{
fileColor_actionPerformed(e);
}
});
fileArea.getDocument().addDocumentListener(new DocumentListener()
{
public void insertUpdate(DocumentEvent e)
{
wasChange=isChange;
isChange=true;
}
public void removeUpdate(DocumentEvent e)
{
wasChange=isChange;
isChange=true;
}
public void changedUpdate(DocumentEvent e)
{
wasChange=isChange;
isChange=true;
}
});
setSize(500,450);
menuBar.add(menuFile);
menuFile.setMnemonic('F');
menuBar.add(menuEdit);
menuEdit.setMnemonic('E');
menuFile.add(menuFileOpen);
menuFileOpen.setMnemonic('O');//访问健;
menuFileOpen.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_O,InputEvent.CTRL_MASK));//快捷健;
menuFile.add(menuFileSave);
menuFileSave.setMnemonic('S');
menuFileSave.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S,InputEvent.CTRL_MASK));
menuFile.addSeparator();
menuFile.add(menuFileExit);
menuFileExit.setMnemonic('E');
menuEdit.add(menuFileCut);
menuFileCut.setMnemonic('C');
menuFileCut.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_C,InputEvent.CTRL_MASK));
menuEdit.add(menuFilePaste);
menuFilePaste.setMnemonic('P');
menuFilePaste.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_P,InputEvent.CTRL_MASK));
menuEdit.add(font);
font.setMnemonic('N');
font.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_N,InputEvent.CTRL_MASK));
this.getContentPane().add(new JScrollPane(fileArea));
setJMenuBar(menuBar);
fileArea.setLineWrap(true);
}
public void fileExit_actionPerformed(ActionEvent e)
{
System.exit(0);
}
public void fileOpen_actionPerformed(ActionEvent e)
{
//以下是filter;
JFileChooser fileChooser=new JFileChooser();
//fileChooser.addChoosableFileFilter(new myFilter("*.txt","Files(*.txt)"));
fileChooser.addChoosableFileFilter(fileChooser.getFileFilter());
if(fileChooser.APPROVE_OPTION!=fileChooser.showOpenDialog(this))return;
//以下是文件读
BufferedReader dataIn=null;
try
{
dataIn=new BufferedReader(new FileReader(fileChooser.getSelectedFile().getPath()));
String c=null;
do
{
c=dataIn.readLine();
if(c!=null)
fileArea.append(c+"\n");
}
while(c!=null);
}
catch(Exception ex)
{
System.out.println("Catch exception:"+ex.toString());
}
}
public void exit()
{
if(isChange==false)
System.exit(1);
else
{
int decision=JOptionPane.showConfirmDialog(this,"The File has Change.\n"+"Do you want to save the change?",
"Notepad",JOptionPane.YES_NO_CANCEL_OPTION,JOptionPane.WARNING_MESSAGE);
if (decision == JOptionPane.YES_OPTION)
{
//以下是将文件写入计算机!
try {
JFileChooser fileSave = new JFileChooser();
fileSave.setDialogTitle("保存文件");
//fileSave.addChoosableFileFilter(new myFilter("*.txt","Files(*.txt)"));
fileSave.addChoosableFileFilter(fileSave.getFileFilter());
if (fileSave.APPROVE_OPTION != fileSave.showSaveDialog(this))
return;
BufferedWriter dataOut = new BufferedWriter(new BufferedWriter(new
FileWriter(fileSave.getSelectedFile())));
String c = null;
do {
String str = fileArea.getText();
dataOut.write(str);
dataOut.close();
}
while (c != null);
}
catch (Exception e2) {
System.out.println("Catch exception:有错误!" + e2.toString());
}
}
else if (decision == JOptionPane.NO_OPTION)
System.exit(1);
else if (decision == JOptionPane.CANCEL_OPTION);
;
}
//innerclass.fileSave_actionPerformed();
}
public void fileSave_actionPerformed(ActionEvent e1)
{
//以下是将文件写入计算机!
try
{
JFileChooser fileSave=new JFileChooser();
fileSave.setDialogTitle("保存文件" );
//fileSave.addChoosableFileFilter(new myFilter("*.txt","Files(*.txt)"));
fileSave.addChoosableFileFilter(fileSave.getFileFilter());
if(fileSave.APPROVE_OPTION!=fileSave.showSaveDialog(this))return;
BufferedWriter dataOut=new BufferedWriter(new BufferedWriter(new FileWriter(fileSave.getSelectedFile()+".txt")));
//RandomAccessFile dataOut=new RandomAccessFile(fileSave.getSelectedFile(),"rw");
String c=null;
do
{
String str=fileArea.getText();
dataOut.write(str);
dataOut.close();
}
while(c!=null);
}
catch(Exception e2)
{
System.out.println("Catch exception:有错误!"+e2.toString());
}
}
public static void main(String arg[])
{
Note nt=new Note();
nt.show();
}
public void fileCut_actionPerformed(ActionEvent e)
{
fileArea.cut();
}
public void filePaste_actionPerformed(ActionEvent e)
{
fileArea.paste();
}
public void fileColor_actionPerformed(ActionEvent e)
{
JColorChooser fileColor=new JColorChooser();
//fileArea.setForeground(fileColor.showDialog(this,"颜色",Color.red));
//fileArea.setSelectionColor(fileColor.showDialog(this,"颜色",Color.red));
fileArea.setSelectionColor(fileColor.showDialog(this,"颜色",Color.black));
}
}
java编写简单记事本
方法/步骤
下载JDK，并安装成功，CMD测试Java环境安装成功。出现如下提示则Java环境安装成功
打开mycelipse进入主界面，点击左上角file--new---java project,新建一个Java项目，项目名字任意取，这里我取名为note--然后点击完成，创建Java项目
然后右键项目下的src--new---package,新建一个包，包名我定为notetest，然后点击完成
然后右键我们建立好的包notetest--new--class，包名为Note,点击完成
首先我们想导入工程所需要的包，以便编写程序时进行调用
package notepad;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.BufferedReader;
import java.io.BufferedWriter;
首先定义好编写程序时变量，我们设为成员变量方便以后调用
public class Notepad{
//屏幕分辨率
int width = Toolkit.getDefaultToolkit().getScreenSize().width;
int height = Toolkit.getDefaultToolkit().getScreenSize().height;
//窗体
private Frame frm ;
//显示内容多行文本
private TextArea notetext;
//记事本菜单
private MenuBar mb;
//菜单
private Menu m ;
//菜单项
private MenuItem open,save;
为程序创建组件--Frame--菜单栏目--文本框TextArea
public Notepad(){init();}
private void init(){
frm = new Frame("模拟记事本");
//设置菜单
mb = new MenuBar();
m = new Menu("文件");
//显示文件的地方
notetext = new TextArea();
notetext.setBounds(30, 50, 750, 500);
frm.add(notetext);
myEvent();
为控件和按钮添加监听事件
private void myEvent() {
//打开菜单的事件处理
open.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
//判断路径和文件名是否为空 如果为空结束程序
if(dir == null || name == null)
//如果不为空讲路径名和文件名封装到File对象里
file = new File(dir,name);
//使用字符缓冲读取文件
BufferedReader bfr = null;
try {
bfr = new BufferedReader(new FileReader(file));
});
save.addActionListener(new ActionListener(){
//获取路径和文件名
String dir =fd.getDirectory();
String name = fd.getFile();
//如果不为空讲路径名和文件名封装到File对象里
file = new File(dir,name);
}
BufferedWriter bfr= null;
}
});
}
}
然后创建主方法，开始测试程序，新建一个NoteDemo类
package notepad;
public class NoteDemo {
public static void main(String[] args) {
new Notepad();
}
}
关于Java记事本课设类和基于java的记事本程序设计的介绍到此就结束了，不知道你从中找到你需要的信息了吗 ？如果你还想了解更多这方面的信息，记得收藏关注本站。
发布于：2022-12-25，除非注明，否则均为原创文章，转载请注明出处。