我給你貼上我在java核心技術中看到的代碼吧,當然沒有輸入年份和月份,是按照當前時間創(chuàng)建的,寫有我寫的注釋,應該能看的懂
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/*
* 2012年5月13日10:37:58
* 日歷程序
* Function:
* 顯示當前月份的日歷
* 總結
* 1. 0-11分別代表1-12月
* 1-7分別代表周日-周六
* 2. 使用GregorianCalendar對象的get方法（參數(shù)）獲取月，日，年等信息
* 3.
*/
import java.text.DateFormatSymbols;
import java.util.*;
public class CalendarTest {
public static void main(String[] args) {
//construct d as current date構造一個日期
GregorianCalendar d = new GregorianCalendar();
//獲取今天是這個月的第幾天
int today = d.get(Calendar.DAY_OF_MONTH); //Calendar.DAY_OF_MONTH作為參數(shù)調(diào)用，得到今天是這個月的第幾天
int month = d.get(Calendar.MONTH); //月份
d.set(Calendar.DAY_OF_MONTH, 1); //設置d的日期是本月的1號
int weekDay = d.get(Calendar.DAY_OF_WEEK); //獲取當天位于本星期的第幾天，也就確定了星期幾，值的范圍是1-7
int firstDayOfWeek = d.getFirstDayOfWeek(); //獲取一星期的第一天,我們得到的是Calendar.SUNDAY,因為我們一星期的第一天是周日
int indent = 0; //為了定位本月第一天，定義索引
while (weekDay != firstDayOfWeek) {
//注意，月份用0-11代表1-12月，為了清晰起見，使用常量代替，下面獲取月份得到的實際是當前月-1的值，所以我們要加1
//System.out.printf("當前星期的第%d天,位于當月的第%d天, 現(xiàn)在是%d月\n",
// weekDay, d.get(Calendar.DAY_OF_MONTH), d.get(Calendar.MONTH)+1); //Test Code
indent++;//縮進個數(shù)+1
d.add(Calendar.DAY_OF_MONTH, -1);//當前天數(shù)-1，如果現(xiàn)在是1號，則執(zhí)行本條代碼后，時間變?yōu)樯弦粋€月最后一天
weekDay = d.get(Calendar.DAY_OF_WEEK); //重新獲取當天位于本星期的第幾天
}
String[] weekDayNames = new DateFormatSymbols().getShortWeekdays();//獲取簡短形式的星期字符串數(shù)組
//System.out.println(weekDayNames.length);getShortWeekdays()得到的數(shù)組的長度是8，下標為0的是沒有值1為星期日...7為星期六
//注釋代碼1
//Java核心技術的代碼
/*
do {
//System.out.printf("%4s", weekDayNames[weekDay]); //經(jīng)過上面定義索引，weekDay代表的是本星期日
d.add(Calendar.DAY_OF_MONTH, 1); //天數(shù)加1
weekDay = d.get(Calendar.DAY_OF_WEEK); //重新獲得weekDay的值
} while (weekDay != firstDayOfWeek); //當循環(huán)完一個星期后，這里判斷不成立，退出循環(huán)
*/
//我寫的代碼，替換上面注釋代碼1
for (int i=1; iweekDayNames.length; i++)//打印星期標題
System.out.printf("%3s\t", weekDayNames[i]);//引號內(nèi)是一個全角的空格，因為是中文版，不是書上英文環(huán)境,中文和空格對于不上,這里我們用\t解決
//System.out.printf("%3s ", weekDayNames[i]); //方式2
System.out.println();//換行
for (int i=1; i=indent; i++)//確定一星期的一天位置，利用上面indent
System.out.printf("\t");//如用方式2，則這里內(nèi)容是四個全角空格
//實現(xiàn)輸出日期
d.set(Calendar.MONTH, month);
d.set(Calendar.DAY_OF_MONTH, 1);
do {
//print day
int day = d.get(Calendar.DAY_OF_MONTH);
System.out.printf("%3d", day);
if (day == today)
System.out.print("*");
System.out.print("\t");
d.add(Calendar.DATE, 1);//天數(shù)加1
weekDay = d.get(Calendar.DAY_OF_WEEK);//刷新weekDay
if (weekDay == firstDayOfWeek) //如果這天等于星期天則換行
System.out.println();
} while (d.get(Calendar.MONTH) == month);
}
}
詳細代碼
//CalendarWindow類：
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.io.*;
public class CalendarWindow extends JFrame implements ActionListener,
MouseListener,FocusListener{
int year,month,day;
CalendarMessage calendarMessage;
CalendarPad calendarPad;
NotePad notePad;
JTextField showYear,showMonth;
JTextField [] showDay;
CalendarImage calendarImage;
Clock clock;
JButton nextYear,previousYear,nextMonth,previousMonth;
JButton saveDailyRecord,deleteDailyRecord,readDailyRecord;
File dir;
Color backColor=Color.gray;
public CalendarWindow(){
dir=new File("./dailyRecord");
dir.mkdir();
showDay=new JTextField[42];
for(int i=0;ishowDay.length;i++){
showDay[i]=new JTextField();
showDay[i].setBackground(backColor);
showDay[i].setLayout(new GridLayout(3,3));
showDay[i].addMouseListener(this);
showDay[i].addFocusListener(this);
}
calendarMessage=new CalendarMessage();
calendarPad=new CalendarPad();
notePad=new NotePad();
Calendar calendar=Calendar.getInstance();
calendar.setTime(new Date());
year=calendar.get(Calendar.YEAR);
month=calendar.get(Calendar.MONTH)+1;
day=calendar.get(Calendar.DAY_OF_MONTH);
calendarMessage.setYear(year);
calendarMessage.setMonth(month);
calendarMessage.setDay(day);
calendarPad.setCalendarMessage(calendarMessage);
calendarPad.setShowDayTextField(showDay);
notePad.setShowMessage(year,month,day);
calendarPad.showMonthCalendar();
doMark(); //給有日志的號碼做標記,見后面的doMark()方法
calendarImage=new CalendarImage();
calendarImage.setImageFile(new File("sea.jpg"));
clock=new Clock();
JSplitPane splitV1=
new JSplitPane(JSplitPane.VERTICAL_SPLIT,calendarPad,calendarImage);
JSplitPane splitV2=
new JSplitPane(JSplitPane.VERTICAL_SPLIT,notePad,clock);
JSplitPane splitH=new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,splitV1,splitV2);
add(splitH,BorderLayout.CENTER);
showYear=new JTextField(""+year,6);
showYear.setFont(new Font("TimesRoman",Font.BOLD,12));
showYear.setHorizontalAlignment(JTextField.CENTER);
showMonth=new JTextField(" "+month,4);
showMonth.setFont(new Font("TimesRoman",Font.BOLD,12));
showMonth.setHorizontalAlignment(JTextField.CENTER);
nextYear=new JButton("下年");
previousYear=new JButton("上年");
nextMonth=new JButton("下月");
previousMonth=new JButton("上月");
nextYear.addActionListener(this);
previousYear.addActionListener(this);
nextMonth.addActionListener(this);
previousMonth.addActionListener(this);
showYear.addActionListener(this);
JPanel north=new JPanel();
north.add(previousYear);
north.add(showYear);
north.add(nextYear);
north.add(previousMonth);
north.add(showMonth);
north.add(nextMonth);
add(north,BorderLayout.NORTH);
saveDailyRecord=new JButton("保存日志") ;
deleteDailyRecord=new JButton("刪除日志");
readDailyRecord=new JButton("讀取日志");
saveDailyRecord.addActionListener(this);
deleteDailyRecord.addActionListener(this);
readDailyRecord.addActionListener(this);
JPanel pSouth=new JPanel();
pSouth.add(saveDailyRecord);
pSouth.add(deleteDailyRecord);
pSouth.add(readDailyRecord);
add(pSouth,BorderLayout.SOUTH);
setVisible(true);//根據(jù)參數(shù) b 的值顯示或隱藏此 Window
setBounds(60,60,660,480);
validate();//驗證此容器及其所有子組件
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //設置用戶在此窗體上發(fā)起 "close" 時默認執(zhí)行的操作
}
public void actionPerformed(ActionEvent e){
if(e.getSource()==nextYear){
year++;
showYear.setText(""+year);
calendarMessage.setYear(year);
calendarPad.setCalendarMessage(calendarMessage);
calendarPad.showMonthCalendar();
notePad.setShowMessage(year,month,day);
doMark();
}
else if(e.getSource()==previousYear){
year--;
showYear.setText(""+year);
calendarMessage.setYear(year);
calendarPad.setCalendarMessage(calendarMessage);
calendarPad.showMonthCalendar();
notePad.setShowMessage(year,month,day);
doMark();
}
else if(e.getSource()==nextMonth){
month++;
if(month12) month=1;
showMonth.setText(" "+month);
calendarMessage.setMonth(month);
calendarPad.setCalendarMessage(calendarMessage);
calendarPad.showMonthCalendar();
notePad.setShowMessage(year,month,day);
doMark();
}
else if(e.getSource()==previousMonth){
month--;
if(month1) month=12;
showMonth.setText(" "+month);
calendarMessage.setMonth(month);
calendarPad.setCalendarMessage(calendarMessage);
calendarPad.showMonthCalendar();
notePad.setShowMessage(year,month,day);
doMark();
}
else if(e.getSource()==showYear){
String s=showYear.getText().trim();
char a[]=s.toCharArray();
boolean boo=false;
for(int i=0;ia.length;i++)
if(!(Character.isDigit(a[i])))
boo=true;
if(boo==true) //彈出“警告”消息對話框
JOptionPane.showMessageDialog(this,"您輸入了非法年份","警告", JOptionPane.WARNING_MESSAGE);
else if(boo==false)
year=Integer.parseInt(s);
showYear.setText(""+year);
calendarMessage.setYear(year);
calendarPad.setCalendarMessage(calendarMessage);
calendarPad.showMonthCalendar();
notePad.setShowMessage(year,month,day);
doMark();
}
else if(e.getSource()==saveDailyRecord){
notePad.save(dir,year,month,day);
doMark();
}
else if(e.getSource()==deleteDailyRecord){
notePad.delete(dir,year,month,day);
doMark();
}
else if(e.getSource()==readDailyRecord)
notePad.read(dir,year,month,day);
}
public void mousePressed(MouseEvent e){
JTextField text=(JTextField)e.getSource();
String str=text.getText().trim();
try{ day=Integer.parseInt(str);
}
catch(NumberFormatException exp){
}
calendarMessage.setDay(day);
notePad.setShowMessage(year,month,day);
}
public void mouseReleased(MouseEvent e){}
public void mouseEntered(MouseEvent e) {}
public void mouseExited(MouseEvent e) {}
public void mouseClicked(MouseEvent e) {}
public void focusGained(FocusEvent e){
Component com=(Component)e.getSource();
com.setBackground(Color.red);
}
public void focusLost(FocusEvent e){
Component com=(Component)e.getSource();
com.setBackground(backColor);
}
public void doMark(){
for(int i=0;ishowDay.length;i++){
showDay[i].removeAll();
String str=showDay[i].getText().trim();
try{
int n=Integer.parseInt(str);
if(isHaveDailyRecord(n)==true){ //見后面的isHaveDailyRecord()方法
JLabel mess=new JLabel("存");
mess.setFont(new Font("TimesRoman",Font.PLAIN,11));
mess.setForeground(Color.black) ;
showDay[i].add(mess);
} }
catch(Exception exp){}
}
calendarPad.repaint();
calendarPad.validate();
}
public boolean isHaveDailyRecord(int n){
String key=""+year+""+month+""+n;
String [] dayFile=dir.list();
boolean boo=false;
for(int k=0;kdayFile.length;k++){
if(dayFile[k].equals(key+".txt")){
boo=true;
break;
} }
return boo;
}
public static void main(String args[]){
new CalendarWindow();
}
}
//CalendarPad類：
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
public class CalendarPad extends JPanel{
int year,month,day;
CalendarMessage calendarMessage;
JTextField [] showDay;
JLabel title[];
String [] 星期={"SUN/日","MON/一","TUE/二","WED/三","THU/四","FRI/五","SAT/六"};
JPanel north,center;
public CalendarPad(){
setLayout(new BorderLayout());
north=new JPanel();
north.setLayout(new GridLayout(1,7));
center=new JPanel();
center.setLayout(new GridLayout(6,7));
add(center,BorderLayout.CENTER);
add(north,BorderLayout.NORTH);
title=new JLabel[7];
for(int j=0;j7;j++){
title[j]=new JLabel();
title[j].setFont(new Font("TimesRoman",Font.BOLD,12));
title[j].setText(星期[j]);
title[j].setHorizontalAlignment(JLabel.CENTER);
title[j].setBorder(BorderFactory.createRaisedBevelBorder());
north.add(title[j]);
}
title[0].setForeground(Color.red);
title[6].setForeground(Color.blue);
}
public void setShowDayTextField(JTextField [] text){
showDay=text;
for(int i=0;ishowDay.length;i++){
showDay[i].setFont(new Font("TimesRoman",Font.BOLD,15));
showDay[i].setHorizontalAlignment(JTextField.CENTER);
showDay[i].setEditable(false);
center.add(showDay[i]);
}
}
public void setCalendarMessage(CalendarMessage calendarMessage){
this.calendarMessage=calendarMessage;
}
public void showMonthCalendar(){
String [] a=calendarMessage.getMonthCalendar();
for(int i=0;i42;i++)
showDay[i].setText(a[i]);
validate();
}
}
import java.util.Scanner; public class Wan{ public static void main(String[] args){ Scanner name = new Scanner(System.in); System.out.print("請輸入要查詢的年份:"); int year = name.nextInt(); System.out.print("請輸入該年的月份"); int month = name.nextInt(); } //累加 該年至輸入的月份 天數(shù) //比如 輸入2009年的 3月分 // 那就累加 2009年的1月至 3月1號的總天數(shù) public void sumDay(int year,int month){ int day = 0; int sumDay = 0; for(int i = 1;i=month;i++){ switch(i){ case 1: case 3: case 5: case 7: case 8: case 10: case 12: day = 31; break; case 2: if(year % 4 == 0 || year % 400 == 0 year %100!=0){ day = 29; }else{ day = 28; } break; default: day = 30; } //最后一個月份不要累加 因為我們只是要算到該月的一號就可以了 if(i month){ sumDay += day; } } //累加 2000年到該年的一月一號天數(shù) for(int i = 2000;iyear;i++){ if( i % 4 == 0 || i %400== 0 i % 100 != 0){ sumDay += 366; }else{ sumDay += 365; } } //求該月一號為星期幾 int week = sumDay % 7 +1; if(week == 7){ week = 0; } } public void fomatDate(int week,int day){ int g = 0; for(int i = 0;iweek;i++){ System.out.print("\t"); } for(int i = 1;i=day;i++){ System.out.print(i+"\t"); g = week + i; if(g % 7 == 0){ System.out.println(); } } } } 給點分哈 寫得好累
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