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该课程设计代码中Wannianli类是主类，也是唯一的类，起着统领程序、对象定义的作用，是万年历整个程序的“主心骨”。
1.主函数Wannianli类
（1）简要描述：
该类是整个程序的主框架，也是唯一的类。起着统领程序、对象定义的作用。
（2）类详细设计：
该类的成员变量、构造方法及方法设计如下：
1）成员变量
l year,month和day是int型变量。它们的值分别确定年份、月份和日期。
l Ask ，ShowDate ，Blank ，NorthMonthDayYear是JLabel型变量。处理与日期有关的标签。
l SouthSave，SouthDelete 是JButton型变量。分别表示保存、删除、前一个月、下一个月按钮。
l CenterText是JTextArea型变量。文本区。
l ShowDays[] ，YearText是JTextField型变量。显示天的文本区，输入年的文本区。
2）构造方法
l Wannianli（）是构造方法，负责完成窗口初始化。
3）方法
l actionPerformed（ActionEvent）方法是Wannianli类实现的ActionListener接口中的方法。Wannianli创建的窗口是nextYear，previousYear，nextMonth，previousMonth，saveDailyRecord，deleteDailyRecord和readDailyRecord按钮的ActionEvent事件监视器，当用户单击其中按钮时，窗口将执行actionPerformed（ActionEvent）方法进行相应的操作。
l GetStartDay得到当月的天，WriteRecord写日记，ReadRecord看日记， DeleteFile删除日记。。。
1.进入主界面。
2.在右侧界面“Year”中输入年份，“Month”中选择月份，单击“Query”。
3.随之右侧下方出现你所选的某年某月的日历，单击某一日期，左侧上方出现你所选的年月日。
4.如果想回到当天日期，点击右侧下方的“Go to today”。
5.左方下侧的文本框里输入文字做备忘录。
6.单击“Save”，弹出“Save success！！”，单击“确定”保存。
7.重复1~3步骤，选相应日期中后弹出对话框，单击“是”就可查看当天所做备忘录。
8.单击“Delete”，弹出对话框，单击“是”，即可删除当天所做备忘录。
经过短暂的一周的Java程序设计，使我又学到了很多的知识，尤其是运用Java知识去解决实际问题的能力又得到了很大的提高。尽管所设计的程序比较简单，但是程序中的每个功能的实现都经过了自己的一定认真的思考。由于把所学的知识做到很灵活的运用在实际中，对于现在的我还有一定的难度，故而，在设计的每个的环节中，都会多多少少的遇到一些问题，这就促使我去查阅各种资料，或者请教老师和同学，极大的提高我的专业素养，同时对在有些书上的理论知识在实际的运用，以及应该注意的问题有了比较深刻的认识。当然，仍然有些理论问题不是很好的去运用，或者是了解的不深刻。这就使的在实践中的所设计的程序有些功能不是自己所想的那样的完美。不过，既然发现了问题的所在，我就不会放弃的，直至问题得到解决。这些也同时反映出了平时运用知识去实践这方面做的太少。太缺乏经验。对所设计中将所面临的问题认识不够。是Java课程设计让我认识到了这些问题的存在。同时给我提供了去面对这些问题的平台。也使我充分的认识到在以后也应该怎样去实践，怎样去学习一门计算机语言，以及如何去运用这门语言去解决实际问题等等。 总之，在经过这次Java的课程设计，使我认识到了自己很多的缺点，同时，也是我学到新知识和新方法的一个机会。这给我在以后继续学习好这门语言指明了方向。在此特别感谢我的老师赵培英以及帮助过我的同学。
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.border.*;
import java.util.Calendar;
import java.util.*;
import java.io.*;
import java.io.IOException;
public class Wannianli extends JFrame implements ActionListener,MouseListener {
int year,month,day;
int yearafterquery,monthafterquery;
int startday;
String SwitchMonth;
String key;
int changeyearmessage;
int changemonthmessage;
int priormonth;
int prioryear;
boolean ischange=false;
boolean ischange_priornext=false;
private JPanel LeftPane,RightPane;
//Left sub
private JLabel YearLabel;
private JLabel MonthLabel;
private JComboBox MonthCombobox;
private JTextField ShowDays[]= new JTextField[42];
private JTextField YearText;
private JLabel Ask;
private JLabel ShowDate;
private JLabel Blank;
private JLabel TopBarTitle[]=new JLabel[7];
private JButton ToToday;
private JButton Query;
private String week[]={"SUN","MON","TUE","WED","THU","FRI","SAT"};
//right sub
private JLabel NorthMonthDayYear;
private JTextArea CenterText;
private JButton SouthSave,SouthDelete;
private JButton PriorMonth;
private JButton NextMonth;
public Wannianli(int year,int month,int day)
{
setTitle("My Calendar&Textbook");
//the layout about left of jpane
LeftPane = new JPanel();
JPanel LeftCenter = new JPanel();
JPanel LeftNorth = new JPanel();
//JPanel LeftSouth = new JPanel();
LeftPane.setLayout(new BorderLayout());
LeftPane.add(LeftNorth,BorderLayout.NORTH);
LeftPane.add(LeftCenter,BorderLayout.CENTER);
LeftPane.add(ToToday = new JButton("Go to today",new ImageIcon("../images/Handle.gif")),BorderLayout.SOUTH);
ToToday.setBackground(Color.cyan);
ToToday.addActionListener(this);
LeftPane.validate();
//the layout of LeftPane
//LeftPane_North
LeftNorth.setLayout(new GridLayout(3,1,0,-2));
LeftNorth.add(Ask = new JLabel(" Plese input the informations which you want query:"));
JPanel North = new JPanel(new FlowLayout(0,8,0));
LeftNorth.add(North);
North.add(YearLabel=new JLabel("Year:"));
North.add(YearText = new JTextField(4));
YearText.setBackground(Color.getHSBColor(30,20,50));
YearText.setForeground(Color.blue);
YearText.setFont(new Font("TimesRoman",Font.BOLD,17));
YearText.addActionListener(this);
YearText.setFocusable(true);
North.add(Blank=new JLabel(" "));
North.add(MonthLabel = new JLabel("Month:"));
North.add(MonthCombobox = new JComboBox());
//add month to monthcombobox
for(int i=1;i<=12;i++)
{
MonthCombobox.addItem(new Integer(i));
}
//Switch the month
MonthCombobox.setForeground(Color.blue);
MonthCombobox.setFont(new Font("TimesRoman",Font.BOLD,12));
North.add(Blank=new JLabel(" "));
North.add(Query=new JButton("Query"));
Query.setForeground(Color.blue);
Query.addActionListener(this);
JPanel North2=new JPanel(new FlowLayout());
LeftNorth.add(North2);
North2.add(PriorMonth=new JButton(new ImageIcon("../images/prior.gif")));
PriorMonth.addActionListener(this);
PriorMonth.setActionCommand("prior");
priormonth=month;
prioryear=year;
SwitchMonth(month);
North2.add(ShowDate = new JLabel(SwitchMonth+" "+","+" "+String.valueOf(year),SwingConstants.CENTER));
ShowDate.setForeground(Color.blue);
ShowDate.setFont(new Font("TimesRoman",Font.BOLD,14));
North2.add(NextMonth=new JButton(new ImageIcon("../images/next.gif")));
NextMonth.addActionListener(this);
NextMonth.setActionCommand("next");
//LeftPane_Center
LeftCenter.setLayout(new GridLayout(7,7));
//print title
for(int i=0;i<7;i++)
{
TopBarTitle[i]=new JLabel();
TopBarTitle[i].setText(week[i]);
TopBarTitle[i].setForeground(Color.darkGray);
TopBarTitle[i].setHorizontalAlignment(0);
TopBarTitle[i].setBackground(Color.MAGENTA );
TopBarTitle[i].setBorder(BorderFactory.createRaisedBevelBorder());
LeftCenter.add(TopBarTitle[i]);
}
//print screen and add listene
for(int i=0;i<42;i++)
{
ShowDays[i]=new JTextField();
ShowDays[i].addMouseListener(this);
ShowDays[i].setEditable(false);
LeftCenter.add(ShowDays[i]);
}
//print the body of month
PrintMonth(year,month,day);
//the layout about right of jpane
RightPane = new JPanel(new BorderLayout());
JPanel RightCenter = new JPanel();
JPanel RightNorth = new JPanel();
JPanel RightSouth = new JPanel(new FlowLayout());
RightPane.add(RightNorth,BorderLayout.NORTH);
RightPane.add(RightCenter,BorderLayout.CENTER);
RightPane.add(RightSouth,BorderLayout.SOUTH);
RightNorth.add(NorthMonthDayYear=new JLabel(">>"+year+","+SwitchMonth+","+day+"<<"));
key=year+"_"+SwitchMonth+"_"+day;
NorthMonthDayYear.setForeground(Color.blue);
NorthMonthDayYear.setFont(new Font("TimesRoman",Font.BOLD,17));
RightCenter.add(CenterText=new JTextArea("please write today‘s things."));
CenterText.setLineWrap(true);
CenterText.setSelectedTextColor(Color.blue);
//CenterText.addActionListener(this);
RightSouth.add(SouthSave=new JButton(" Save "));
SouthSave.setBackground(Color.cyan);
SouthSave.addActionListener(this);
SouthSave.setActionCommand("Save");
RightSouth.add(SouthDelete=new JButton(" Delete "));
SouthDelete.setBackground(Color.cyan);
SouthDelete.addActionListener(this);
SouthDelete.setActionCommand("Delete");
this.year = year;
this.month = month;
this.day = day;
///add container to put LeftPane and RightPane
Container con=getContentPane();
JSplitPane split=new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,RightPane,LeftPane);//gai bian
con.add(split,BorderLayout.CENTER);
con.validate();
//add CenterPane to notepad
//CenterPane initialize
setFont(new Font("Times New Roman",Font.PLAIN,12));
JScrollPane scrollpane = new JScrollPane(CenterText);
scrollpane.setPreferredSize(new Dimension(220,250));
RightCenter.add(scrollpane);
//init randomaccessfile
}
//switch the month in english
public void SwitchMonth(int month)
{
switch(month)
{
case 1:
SwitchMonth="Jan";break;
case 2:
SwitchMonth="Feb";break;
case 3:
SwitchMonth="Mar";break;
case 4:
SwitchMonth="Apr";break;
case 5:
SwitchMonth="May";break;
case 6:
SwitchMonth="Jun";break;
case 7:
SwitchMonth="Jul";break;
case 8:
SwitchMonth="Aug";break;
case 9:
SwitchMonth="Sep";break;
case 10:
SwitchMonth="Qct";break;
case 11:
SwitchMonth="Nov";break;
case 12:
SwitchMonth="Dec";break;
}
}
//print the body of the month
public void PrintMonth(int year,int month,int day)
{
//Get start day of the week for the first date in the month
int startday = GetStartDay(year,month);
//Get number of days in the month
int dayinmonth = GetNumOfDaysInMonth(year,month);
//Print header
//PrintTitleAndScreen();
//Print body
PrintMonthBody(startday,dayinmonth);
}
//PrintMonth(int year,int month,int day)‘s burden
public void PrintMonth(int year,int month)
{
//Get start day of the week for the first date in the month
int startday = GetStartDay(year,month);
//Get number of days in the month
int dayinmonth = GetNumOfDaysInMonth(year,month);
//Print header
//Print body
PrintMonthBody(startday,dayinmonth);
}
//PrintMonthBody(int startday,int dayinmonth,int day)‘s burden
public void PrintMonthBody(int startday,int dayinmonth)
{
for(int i=startday,n=1;i<startday+dayinmonth;i++)
{
ShowDays[i].setText(""+n);
ShowDays[i].setHorizontalAlignment(0);//let center
if(n==day)
{
ShowDays[i].setForeground(Color.green);
ShowDays[i].setFont(new Font("TimesRoman",Font.BOLD,20));
ShowDays[i].setBackground(Color.DARK_GRAY);
}
else
{
ShowDays[i].setFont(new Font("TimesRoman",Font.BOLD,12));
ShowDays[i].setForeground(Color.white);
ShowDays[i].setBackground(Color.DARK_GRAY);
}
n++;
}
for(int i=0;i<startday;i++)
{
ShowDays[i].setText("");
ShowDays[i].setBackground(Color.DARK_GRAY);
}
for(int i=startday+dayinmonth;i<42;i++)
{
ShowDays[i].setText("");
ShowDays[i].setBackground(Color.DARK_GRAY);
}
}
//judge leapyear is or not
public boolean IsLeapYear(int year)
{
if((year%400==0)||(year%4==0&&year%100!=0))
return true;
else
return false;
}
//judge the start day of a month
public int GetStartDay(int year,int month)
{
//get total number of day since1/1/0000
int startday0001=-32768;
long totalnumofdays=GetTotalNumOfDays(year,month);
//return the start day
return (int)((totalnumofdays+startday0001)%7);
}
//judge the days of a year
public long GetTotalNumOfDays(int year,int month)
{
long total=0;
//get the total days from -32767 to year
for(int i=-32767;i<year;i++)
{
if(IsLeapYear(i))
total=total+366;
else
total=total+365;
}
//Add days from jan to the month prior to the calendar month
for(int i=1;i<month;i++)
total=total+GetNumOfDaysInMonth(year,i);
return total;
}
//judge the days of a month
public int GetNumOfDaysInMonth(int year,int month)
{
if(month==1 || month==3 || month==5 || month==7 || month==8 || month==10 ||month==12)
return 31;
if(month==4 || month==6 || month==9 || month==11)
return 30;
if(month==2)
{
if(IsLeapYear(year))
return 29;
else
return 28;
}
return 0;
}
public void WriteRecord()
{
String content;
content=CenterText.getText();
int n=content.length();
char[] contentarr=new char[n];
try
{
int i=0;
for(i=0;i<n;i++)
{
contentarr[i]=content.charAt(i);
}
File Diary = new File("Diary");
Diary.mkdir();
File myfile=new File("Diary\\"+key+".txt");
FileWriter Record=new FileWriter(myfile);
for(i=0;i<contentarr.length;i++)
{
Record.write(contentarr[i]);
}
Record.close();
JOptionPane.showMessageDialog(this,"Save success!");
}
catch(IOException ex){}
}
public void ReadRecord()
{
try
{
String content="";
File myfile=new File("Diary\\"+key+".txt");
FileReader Record=new FileReader(myfile);
if(myfile.exists())
{
long b=myfile.length();
//char[] contentarr=new char[b];
int n=JOptionPane.showConfirmDialog(this,"Today has logs,are you read?","Confirm",JOptionPane.YES_NO_CANCEL_OPTION);
if(n==JOptionPane.YES_OPTION)
{
while((b=Record.read())!=-1)
{
content=content+(char)b;
}
CenterText.setText(content);
}
}
Record.close();
}
catch(IOException ex)
{
CenterText.setText("Today has not logs.");
}
}
public void DeleteFile()
{
String filepath="Diary\\"+key+".txt";
File myfile=new File(filepath);
int n=JOptionPane.showConfirmDialog(this,"Are you sure delete the file?","Confirm",JOptionPane.YES_NO_CANCEL_OPTION);
if(n==JOptionPane.YES_OPTION)
{
if(myfile.exists())
{
Runtime rt = Runtime.getRuntime();
try
{
rt.exec("cmd /c del "+filepath);
}
catch (IOException e)
{
e.printStackTrace();
}
JOptionPane.showMessageDialog(this,"Delete successed!");
CenterText.setText("Today has not logs.");
}
else
{
JOptionPane.showMessageDialog(this,"The file doesn‘t exist,delete failured!");
}
}
}
public void AboutActionListenerWay()
{
try
{
prioryear=Integer.parseInt(YearText.getText());
priormonth=MonthCombobox.getSelectedIndex()+1;
String StrYearText=YearText.getText();
changeyearmessage=Integer.parseInt(StrYearText);
changemonthmessage=MonthCombobox.getSelectedIndex()+1;
monthafterquery=changemonthmessage;
yearafterquery=changeyearmessage;
SwitchMonth(changemonthmessage);
ShowDate.setText(SwitchMonth+" "+","+" "+String.valueOf(changeyearmessage));
PrintMonth(changeyearmessage,changemonthmessage);
ischange=true;
}
catch(Exception ee)
{
JOptionPane.showMessageDialog(this,"The input format doesn‘t match","Error",JOptionPane.ERROR_MESSAGE);
}
}
//do actonlistener things
public void actionPerformed(ActionEvent eAction)
{
String ActionCommand=eAction.getActionCommand();
//Handle button events
if(eAction.getSource() instanceof JButton)
{
//Handle the query
if("Query".equals(ActionCommand))
{
try
{
AboutActionListenerWay();
}
catch(Exception ee)
{
JOptionPane.showMessageDialog(this,"The input format doesn‘t match","Error",JOptionPane.ERROR_MESSAGE);
}
}
//Handle prior month
if("prior".equals(ActionCommand))
{
if(priormonth>1)
{
priormonth=priormonth-1;
}
else
{
priormonth=12;
prioryear=prioryear-1;
}
PrintMonth(prioryear,priormonth,day);
SwitchMonth(priormonth);
ShowDate.setText(SwitchMonth+" , "+prioryear);
NorthMonthDayYear.setText(">>"+SwitchMonth+","+day+","+prioryear+"<<");
key=prioryear+"_"+SwitchMonth+"_"+day;
ischange_priornext=true;
}
//Handle next month
if("next".equals(ActionCommand))
{
if(priormonth<12)
{
priormonth=priormonth+1;
}
else
{
priormonth=1;
prioryear=prioryear+1;
}
PrintMonth(prioryear,priormonth,day);
SwitchMonth(priormonth);
ShowDate.setText(SwitchMonth+" , "+prioryear);
NorthMonthDayYear.setText(">>"+SwitchMonth+","+day+","+prioryear+"<<");
key=prioryear+"_"+SwitchMonth+"_"+day;
ischange_priornext=true;
}
//Handle the "Go to today"
if("Go to today".equals(ActionCommand))
{
PrintMonth(year,month,day);
YearText.setText("");
MonthCombobox.setSelectedIndex(0);
SwitchMonth(month);
ShowDate.setText(SwitchMonth+" "+","+" "+String.valueOf(year));
NorthMonthDayYear.setText(">>"+year+SwitchMonth+","+day+","+"<<");
key=year+"_"+SwitchMonth+"_"+day;
priormonth=month;
prioryear=year;
ischange=false;
}
//Handle the "Save"
if("Save".equals(ActionCommand))
{
WriteRecord();
}
if("Delete".equals(ActionCommand))
{
DeleteFile();
}
}
//Handle JTextField events
if(eAction.getSource() instanceof JTextField)
{
//Handle the query
AboutActionListenerWay();
}
}
public void mousePressed(MouseEvent eMouse)
{
int day;
try
{
JTextField source=(JTextField)eMouse.getSource();
day=Integer.parseInt(source.getText());
if(ischange==false)
{
if(ischange_priornext==false)
{
NorthMonthDayYear.setText(">>"+SwitchMonth+","+day+","+year+"<<");
key=year+"_"+SwitchMonth+"_"+day;
}
else
{
NorthMonthDayYear.setText(">>"+SwitchMonth+","+day+","+prioryear+"<<");
key=prioryear+"_"+SwitchMonth+"_"+day;
}
}
else
// JTextField source=(JTextField)eMouse.getSource();
//day=Integer.parseInt(source.getText());
if(ischange_priornext==false)
{
SwitchMonth(changemonthmessage);
NorthMonthDayYear.setText(">>"+SwitchMonth+","+day+","+changeyearmessage+"<<");
key=changeyearmessage+"_"+SwitchMonth+"_"+day;
}
else
{
SwitchMonth(priormonth);
NorthMonthDayYear.setText(">>"+SwitchMonth+","+day+","+prioryear+"<<");
key=prioryear+"_"+SwitchMonth+"_"+day;
}
ReadRecord();
}
catch(Exception ee)
{
}
}
public void mouseClicked(MouseEvent e){}
public void mouseReleased(MouseEvent e){}
public void mouseEntered(MouseEvent e){}
public void mouseExited(MouseEvent e){}
public void SaveLog(int year,int month,int day){}
public static void main(String[] args) throws Exception
{
Calendar calendar=Calendar.getInstance();
int y=calendar.get(Calendar.YEAR);
int m=calendar.get(Calendar.MONTH)+1;
int d=calendar.get(Calendar.DAY_OF_MONTH);
Wannianli frame = new Wannianli(y, m, d);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(560,300);
frame.setLocation(100,100);
frame.setVisible(true);
frame.setResizable(false);
frame.ReadRecord();
}
}
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原文地址：http://www.cnblogs.com/jingcaihong/p/4483299.html
