『壹』 java 一年的第一周從2月1號開始，獲取今年的第三周的星期一，以及去年第三周的星期一 對應的日期
public getWeekCount(Date date){ // 獲取日歷類實例 java.util.Calendar calendar = java.util.Calendar.getInstance(); // 設置時間 calendar.setTime(date); // 設置周一為每周第一天 calendar.setFirstDayOfWeek(java.util.Calendar.MONDAY); // 返回當年最大周數 return calendar.getActualMaximum(java.util.Calendar.WEEK_OF_YEAR);}
『貳』 急需日歷記事本JAVA源代碼
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 日歷;
int 星期幾;
NotePad notepad=null;
Month 負責改變月;
Year 負責改變年;
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();
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;
負責改變年=new Year(this);
負責改變年.setYear(year);
負責改變月=new Month(this);
負責改變月.setMonth(month);
title=new JLabel[7];
showDay=new JTextField[42];
for(int j=0;j<7;j++)
{
title[j]=new JLabel();
title[j].setText(星期[j]);
title[j].setBorder(BorderFactory.createRaisedBevelBorder());
leftCenter.add(title[j]);
}
title[0].setForeground(Color.red);
title[6].setForeground(Color.blue);
for(int i=0;i<42;i++)
{
showDay[i]=new JTextField();
showDay[i].addMouseListener(this);
showDay[i].setEditable(false);
leftCenter.add(showDay[i]);
}
日歷=Calendar.getInstance();
Box box=Box.createHorizontalBox();
box.add(負責改變年);
box.add(負責改變月);
leftNorth.add(box);
leftPanel.setLayout(new BorderLayout());
leftPanel.add(leftNorth,BorderLayout.NORTH);
leftPanel.add(leftCenter,BorderLayout.CENTER);
leftPanel.add(new Label("請在年份輸入框輸入所查年份(負數表示公元前),並回車確定"),
BorderLayout.SOUTH) ;
leftPanel.validate();
Container con=getContentPane();
JSplitPane split=new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,
leftPanel,rightPanel);
con.add(split,BorderLayout.CENTER);
con.validate();
hashtable=new Hashtable();
file=new File("日歷記事本.txt");
if(!file.exists())
{
try{
FileOutputStream out=new FileOutputStream(file);
ObjectOutputStream objectOut=new ObjectOutputStream(out);
objectOut.writeObject(hashtable);
objectOut.close();
out.close();
}
catch(IOException e)
{
}
}
notepad=new NotePad(this);
rightPanel.add(notepad);
設置日歷牌(year,month);
addWindowListener(new WindowAdapter()
{ public void windowClosing(WindowEvent e)
{
System.exit(0);
}
});
setVisible(true);
setBounds(100,50,524,285);
validate();
}
public void 設置日歷牌(int year,int month)
{
日歷.set(year,month-1,1);
星期幾=日歷.get(Calendar.DAY_OF_WEEK)-1;
if(month==1||month==2||month==3||month==5||month==7
||month==8||month==10||month==12)
{
排列號碼(星期幾,31);
}
else if(month==4||month==6||month==9||month==11)
{
排列號碼(星期幾,30);
}
else if(month==2)
{
if((year%4==0&&year%100!=0)||(year%400==0))
{
排列號碼(星期幾,29);
}
else
{
排列號碼(星期幾,28);
}
}
}
public void 排列號碼(int 星期幾,int 月天數)
{
for(int i=星期幾,n=1;i<星期幾+月天數;i++)
{
showDay[i].setText(""+n);
if(n==day)
{
showDay[i].setForeground(Color.green);
showDay[i].setFont(new Font("TimesRoman",Font.BOLD,20));
}
else
{
showDay[i].setFont(new Font("TimesRoman",Font.BOLD,12));
showDay[i].setForeground(Color.black);
}
if(i%7==6)
{
showDay[i].setForeground(Color.blue);
}
if(i%7==0)
{
showDay[i].setForeground(Color.red);
}
n++;
}
for(int i=0;i<星期幾;i++)
{
showDay[i].setText("");
}
for(int i=星期幾+月天數;i<42;i++)
{
showDay[i].setText("");
}
}
public int getYear()
{
return year;
}
public void setYear(int y)
{
year=y;
notepad.setYear(year);
}
public int getMonth()
{
return month;
}
public void setMonth(int m)
{
month=m;
notepad.setMonth(month);
}
public int getDay()
{
return day;
}
public void setDay(int d)
{
day=d;
notepad.setDay(day);
}
public Hashtable getHashtable()
{
return hashtable;
}
public File getFile()
{
return file;
}
public void mousePressed(MouseEvent e)
{
JTextField source=(JTextField)e.getSource();
try{
day=Integer.parseInt(source.getText());
notepad.setDay(day);
notepad.設置信息條(year,month,day);
notepad.設置文本區(null);
notepad.獲取日誌內容(year,month,day);
}
catch(Exception ee)
{
}
}
public void mouseClicked(MouseEvent e)
{
}
public void mouseReleased(MouseEvent e)
{
}
public void mouseEntered(MouseEvent e)
{
}
public void mouseExited(MouseEvent e)
{
}
public static void main(String args[])
{
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);
new CalendarPad(y,m,d);
}
}
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class Month extends Box implements ActionListener
{
int month;
JTextField showMonth=null;
JButton 下月,上月;
CalendarPad 日歷;
public Month(CalendarPad 日歷)
{
super(BoxLayout.X_AXIS);
this.日歷=日歷;
showMonth=new JTextField(2);
month=日歷.getMonth();
showMonth.setEditable(false);
showMonth.setForeground(Color.blue);
showMonth.setFont(new Font("TimesRomn",Font.BOLD,16));
下月=new JButton("下月");
上月=new JButton("上月");
add(上月);
add(showMonth);
add(下月);
上月.addActionListener(this);
下月.addActionListener(this);
showMonth.setText(""+month);
}
public void setMonth(int month)
{
if(month<=12&&month>=1)
{
this.month=month;
}
else
{
this.month=1;
}
showMonth.setText(""+month);
}
public int getMonth()
{
return month;
}
public void actionPerformed(ActionEvent e)
{
if(e.getSource()==上月)
{
if(month>=2)
{
month=month-1;
日歷.setMonth(month);
日歷.設置日歷牌(日歷.getYear(),month);
}
else if(month==1)
{
month=12;
日歷.setMonth(month);
日歷.設置日歷牌(日歷.getYear(),month);
}
showMonth.setText(""+month);
}
else if(e.getSource()==下月)
{
if(month<12)
{
month=month+1;
日歷.setMonth(month);
日歷.設置日歷牌(日歷.getYear(),month);
}
else if(month==12)
{
month=1;
日歷.setMonth(month);
日歷.設置日歷牌(日歷.getYear(),month);
}
showMonth.setText(""+month);
}
}
}
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.event.*;
import java.io.*;
public class NotePad extends JPanel implements ActionListener
{
JTextArea text;
JButton 保存日誌,刪除日誌;
Hashtable table;
JLabel 信息條;
int year,month,day;
File file;
CalendarPad calendar;
public NotePad(CalendarPad calendar)
{
this.calendar=calendar;
year=calendar.getYear();
month=calendar.getMonth();
day=calendar.getDay();;
table=calendar.getHashtable();
file=calendar.getFile();
信息條=new JLabel(""+year+"年"+month+"月"+day+"日",JLabel.CENTER);
信息條.setFont(new Font("TimesRoman",Font.BOLD,16));
信息條.setForeground(Color.blue);
text=new JTextArea(10,10);
保存日誌=new JButton("保存日誌") ;
刪除日誌=new JButton("刪除日誌") ;
保存日誌.addActionListener(this);
刪除日誌.addActionListener(this);
setLayout(new BorderLayout());
JPanel pSouth=new JPanel();
add(信息條,BorderLayout.NORTH);
pSouth.add(保存日誌);
pSouth.add(刪除日誌);
add(pSouth,BorderLayout.SOUTH);
add(new JScrollPane(text),BorderLayout.CENTER);
}
public void actionPerformed(ActionEvent e)
{
if(e.getSource()==保存日誌)
{
保存日誌(year,month,day);
}
else if(e.getSource()==刪除日誌)
{
刪除日誌(year,month,day);
}
}
public void setYear(int year)
{
this.year=year;
}
public int getYear()
{
return year;
}
public void setMonth(int month)
{
this.month=month;
}
public int getMonth()
{
return month;
}
public void setDay(int day)
{
this.day=day;
}
public int getDay()
{
return day;
}
public void 設置信息條(int year,int month,int day)
{
信息條.setText(""+year+"年"+month+"月"+day+"日");
}
public void 設置文本區(String s)
{
text.setText(s);
}
public void 獲取日誌內容(int year,int month,int day)
{
String key=""+year+""+month+""+day;
try
{
FileInputStream inOne=new FileInputStream(file);
ObjectInputStream inTwo=new ObjectInputStream(inOne);
table=(Hashtable)inTwo.readObject();
inOne.close();
inTwo.close();
}
catch(Exception ee)
{
}
if(table.containsKey(key))
{
String m=""+year+"年"+month+"月"+day+"這一天有日誌記載,想看嗎?";
int ok=JOptionPane.showConfirmDialog(this,m,"詢問",JOptionPane.YES_NO_OPTION,
JOptionPane.QUESTION_MESSAGE);
if(ok==JOptionPane.YES_OPTION)
{
text.setText((String)table.get(key));
}
else
{
text.setText("");
}
}
else
{
text.setText("無記錄");
}
}
public void 保存日誌(int year,int month,int day)
{
String 日誌內容=text.getText();
String key=""+year+""+month+""+day;
String m=""+year+"年"+month+"月"+day+"保存日誌嗎?";
int ok=JOptionPane.showConfirmDialog(this,m,"詢問",JOptionPane.YES_NO_OPTION,
JOptionPane.QUESTION_MESSAGE);
if(ok==JOptionPane.YES_OPTION)
{
try
{
FileInputStream inOne=new FileInputStream(file);
ObjectInputStream inTwo=new ObjectInputStream(inOne);
table=(Hashtable)inTwo.readObject();
inOne.close();
inTwo.close();
table.put(key,日誌內容);
FileOutputStream out=new FileOutputStream(file);
ObjectOutputStream objectOut=new ObjectOutputStream(out);
objectOut.writeObject(table);
objectOut.close();
out.close();
}
catch(Exception ee)
{
}
}
}
public void 刪除日誌(int year,int month,int day)
{
String key=""+year+""+month+""+day;
if(table.containsKey(key))
{
String m="刪除"+year+"年"+month+"月"+day+"日的日誌嗎?";
int ok=JOptionPane.showConfirmDialog(this,m,"詢問",JOptionPane.YES_NO_OPTION,
JOptionPane.QUESTION_MESSAGE);
if(ok==JOptionPane.YES_OPTION)
{
try
{
FileInputStream inOne=new FileInputStream(file);
ObjectInputStream inTwo=new ObjectInputStream(inOne);
table=(Hashtable)inTwo.readObject();
inOne.close();
inTwo.close();
table.remove(key);
FileOutputStream out=new FileOutputStream(file);
ObjectOutputStream objectOut=new ObjectOutputStream(out);
objectOut.writeObject(table);
objectOut.close();
out.close();
text.setText(null);
}
catch(Exception ee)
{
}
}
}
else
{
String m=""+year+"年"+month+"月"+day+"無日誌記錄";
JOptionPane.showMessageDialog(this,m,"提示",JOptionPane.WARNING_MESSAGE);
}
}
}
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class Year extends Box implements ActionListener
{
int year;
JTextField showYear=null;
JButton 明年,去年;
CalendarPad 日歷;
public Year(CalendarPad 日歷)
{
super(BoxLayout.X_AXIS);
showYear=new JTextField(4);
showYear.setForeground(Color.blue);
showYear.setFont(new Font("TimesRomn",Font.BOLD,14));
this.日歷=日歷;
year=日歷.getYear();
明年=new JButton("下年");
去年=new JButton("上年");
add(去年);
add(showYear);
add(明年);
showYear.addActionListener(this);
去年.addActionListener(this);
明年.addActionListener(this);
}
public void setYear(int year)
{
this.year=year;
showYear.setText(""+year);
}
public int getYear()
{
return year;
}
public void actionPerformed(ActionEvent e)
{
if(e.getSource()==去年)
{
year=year-1;
showYear.setText(""+year);
日歷.setYear(year);
日歷.設置日歷牌(year,日歷.getMonth());
}
else if(e.getSource()==明年)
{
year=year+1;
showYear.setText(""+year);
日歷.setYear(year);
日歷.設置日歷牌(year,日歷.getMonth());
}
else if(e.getSource()==showYear)
{
try
{
year=Integer.parseInt(showYear.getText());
showYear.setText(""+year);
日歷.setYear(year);
日歷.設置日歷牌(year,日歷.getMonth());
}
catch(NumberFormatException ee)
{
showYear.setText(""+year);
日歷.setYear(year);
日歷.設置日歷牌(year,日歷.getMonth());
}
}
}
}
希望能幫到你，以上分為4個類。。分割線以標注了