package calendar; import java.util.Scanner;//日歷項目public class RiLi{ public static void main(String[] args){ Scanner A=new Scanner(System.in); System.out.println("請輸入年份："); int year=A.nextInt(); System.out.println("請輸入月份："); int month=A.nextInt(); int sum=0; for(int i=1900;i<year;i++){  if(i%4==0&&i%100!=0||i%400==0){  sum=sum+366;  }else{  sum=sum+365;  } } for(int i=1;i<month;i++){  if(i==2){  if(year%4==0&&year%100!=0||year%400==0){   sum=sum+29;}  else{   sum=sum+28;  }  }else{  if(i==4||i==6||i==9||i==11){   sum+=30;  }else{   sum+=31;  }  } } sum=sum+1; int wekday=sum%7; System.out.println("日/t一/t二/t三/t四/t五/t六"); for(int i=1;i<=wekday;i++){  System.out.print("/t"); } int f=0; if(month==4||month==6||month==9||month==11){  f=30;} if(month==1||month==3||month==5||month==7||month==8||month==10||month==12){f=31;} if(month==2){  if(year%4==0&&year%100!=0||year%400==0){f=29;}  else{f=28;} } for(int i=1;i<=f;i++){  if(sum%7==6){  System.out.print(i+"/n");  }else{  System.out.print(i+"/t");  }  sum++; } }}

public class myCalendar {  //以下程序段是用來計算輸入日期為該年的第幾天的  public static int cptDay(int year , int month , int day){    byte dayadd[]={1,-2,1,0,1,0,1,1,0,1,0,1};  //用來存儲每個月天數和30的差值    int daycount = 0;  //這是天數daycount計數器，初始化為0      for(int i=0; i<month-1; i++)        daycount+=(30+dayadd[i]);      daycount+=day;      return (month>2)?daycount+isLeap(year):daycount;  }  //閏年判定程序段，閏年返回1，平年返回0  public static int isLeap(int year){    if((year%400==0)||((year%4==0)&&(year%100!=0)))      return 1;    return 0;  }  //計算輸入日期是星期幾  //采用了基姆拉爾森計算公式  //W= (d+2*m+3*(m+1)/5+y+y/4-y/100+y/400) mod 7  //在公式中d表示日期中的日數，m表示月份數，y表示年數。  //注意：在公式中有個與其他公式不同的地方：  //把一月和二月看成是上一年的十三月和十四月，例：如果是2004-1-10則換算成：2003-13-10來代入公式計算。  public static int getWeek(int year,int month,int day){    if(month<3)    { month+=12; year--;}    return (day+2*month+3*(month+1)/5+year+year/4-year/100+year/400)%7;  }  //以下程序段是來計算輸入日期為該年第幾周的  public static int weekCount(int year,int month,int day){    int dayCnt = cptDay(year,month,day);    int weekminus = getWeek(year,month,day)-getWeek(year,1,1);    int weekCnt = 0;    if(dayCnt%7==0) weekCnt = dayCnt/7+((weekminus>0)?1:0);    else weekCnt = dayCnt/7+((weekminus>0)?2:1);    return weekCnt;    }  //打印萬年歷  public static void printCal(int year){    byte dayadd[]={0,1,-2,1,0,1,0,1,1,0,1,0,1}; //同樣的，每月天數和30的差值，注意，dadadd[0]的0并沒用到    int wkpoint = getWeek(year,1,1);      //wkpoint用來指出當前日期的星期數       int t = 0;                 //t用來作為一個標記器，解決閏年2月有29天的問題    int bk = 0;                 //bk用來記錄需輸空白的數目    String week[]={"星期一","星期二","星期三","星期四","星期五","星期六","星期日"};    for(int i=1;i<13;i++)    {      t = 0;      bk = 0;      if((i==2)&&(isLeap(year)==1))        t = 1;               //當且僅當閏年的2月份才將其置為1      System.out.println("/n/n/t/t"+year+" 年 "+i+" 月/n");      for(int j=0;j<7;j++)        System.out.print(week[j]+"/t");      System.out.println();      while(bk++<wkpoint)        System.out.print('/t');      for(int j=1;j<=(30+dayadd[i]+t);j++)      {        System.out.print(j+"/t");      //循環輸出每月日期        if(wkpoint==6)          { wkpoint = 0; System.out.print('/n');} //當wkpoint計數器為6時將其置為0，并換行        else          wkpoint++;                             }    }  }  public static void main(String[] args){    String week[]={"星期一","星期二","星期三","星期四","星期五","星期六","星期日"};    System.out.println("輸入的日期是該年的第"+cptDay(2009,2,15)+"天");    System.out.println("這一天是該年的第"+weekCount(2009,2,15)+"周 "+week[getWeek(2009,2,15)]);    printCal(2009);  }}

int year;  int month;  boolean xn = false;  do {        System.out.println("請輸入年份:");        year = input.nextInt();        System.out.println("請輸入月份:");        month = input.nextInt();        //利用boolean類型的表達式進行輸入信息的判斷        xn = (month < 1) || (month > 12) ||(year < 1);        if(xn)       {           System.out.println("輸入信息錯誤，請重新輸入！");       }  }while(xn); 

int everyYearDay = 0; //每年的天數  int totalYearsDays = 0; //計算年的天數  int inputYearDay = 0  //記錄用戶輸入年的天數  boolean yn = false;  //標識平閏年   //利用for循環計算天數  for(int i = 1900;i < =year;i ++)  {     if(((i % 4 == 0)&&(i % 100 != 0))||(i % 400 == 0)) //閏年的判斷條件     {            yn = true;            everyYearDay = 366;     }     else   {            yn = false;            everyYearDay = 365;    }    //如果循環中的年份小于用戶輸入的年份,則累積天數   if(i < year)     {         totalYearsDays = totalYearsDays + everyYearDay;     }     else    {         inputYearDay = everyYearDay;         System.out.println(year + "年共有:" + inputYearDay + "天");     }  } 

int everyMonthDay = 0;  //記錄每月的天數  int totalMonthsDays = 0; //總天數  int inputMonthDay = 0;  //記錄用戶輸入的月份在用戶輸入年份的天數   //利用for循環計算天數  for(int i = 1;i <= month;i ++)  {     switch(i)     {         case 4:         case 6:         case 9:         case 11:              everyMonthDay = 30;              break;         case 2:              if(xn)  //xn是用來記錄平閏年的boolean類型的變量              {                 everyMonthDay = 29;              }              else            {                 everyMonthDay = 28;             }             break;         default:                  everyMonthDay = 31;                  break;     }     if(i < month)    {         totalMonthsDays = totalMonthsDays + everyMonthDay;    }    else   {          inputMonthDay = everyMonthDay;          System.out.println(month + "月共有:" + inputMonthDay + "天");    }  } 

//因為我們的輸入格式是  //星期日 星期一 星期二 星期三 星期四 星期五 星期六  //當星期日時的時候，我們直接輸出就好了，但是當  //第一天是星期一的時候，我們就必須首先打印出空格  //然后再輸出日期，才能讓號碼和星期想對應  //打印空格  for(int spaceno = 0;spaceno < temp;spaceno ++)  {     System.out.print("/t");  }   //按照順序打印號碼  for(int i = 1;i <= inputMonthDay;i ++)  {     if((total + i ) % 7)   //判斷是否該換行了     {          System.out.println(i );     }     else   {           System.out.print(i + "/t");    }  }   

public class MyCalendar {  public static void main(String args[]) {    Scanner sc = new Scanner(System.in);    Calendar c = Calendar.getInstance();    System.out.println("請輸入數字年：（比如 2014）");    int year = sc.nextInt();    sc.close();//   int year = 2014;    c.set(Calendar.YEAR,year);              for (int i = 0; i < 12; i++) {      c.set(Calendar.MONTH,i); //      c.set(Calendar.DATE,1); //設置成1月      printMonth(c);    }        }     public static void printMonth(Calendar c){    c.set(Calendar.DAY_OF_MONTH,1);  //設置成一日    System.out.printf("/n/n========= %s 月 =========/n",c.get(Calendar.MONTH)+1);    String[] weeks = { "日", "一" , "二", "三", "四", "五", "六" };    for (int i = 0; i < weeks.length; i++) {      System.out.printf("%s" + (i != 6 ?"/t":"/n"),weeks[i]);    }         int offday = c.get(Calendar.DAY_OF_WEEK) - 1;         for(int i = 0; i < offday; i++){      System.out.printf("/t");    }         int month = c.get(Calendar.MONTH);    while(c.get(Calendar.MONTH) == month ){      System.out.printf("%d" + ( (c.get(Calendar.DAY_OF_WEEK)) != 7 ? "/t":"/n") ,c.get(Calendar.DAY_OF_MONTH));      c.add(Calendar.DAY_OF_MONTH, 1);    }  }}

import javax.swing.*;import java.awt.*;import java.awt.event.*;import java.text.*;import java.util.*; //創建窗口和年歷class MainFrame extends JFrame{JPanel panel=new JPanel(new BorderLayout());//BorderLayout為邊界布局JPanel panel1=new JPanel();JPanel panel2=new JPanel(new GridLayout(7,7));//GridLayout為網格布局JPanel panel3=new JPanel();JLabel []label=new JLabel[49];JLabel y_label=new JLabel("年份");JLabel m_label=new JLabel("月份");JComboBox com1=new JComboBox();JComboBox com2=new JComboBox();JButton button=new JButton("查看");int re_year,re_month;int x_size,y_size;String year_num;Calendar now=Calendar.getInstance(); //實例化CalendarMainFrame(){super("萬年歷-Jackbase");setSize(300,350);x_size=(int)(Toolkit.getDefaultToolkit().getScreenSize().getWidth());y_size=(int)(Toolkit.getDefaultToolkit().getScreenSize().getHeight());setLocation((x_size-300)/2,(y_size-350)/2);setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);panel1.add(y_label);panel1.add(com1);panel1.add(m_label);panel1.add(com2);panel1.add(button);for(int i=0;i<49;i++){label=new JLabel("",JLabel.CENTER);//將顯示的字符設置為居中panel2.add(label);}panel3.add(new Clock(this));panel.add(panel1,BorderLayout.NORTH);panel.add(panel2,BorderLayout.CENTER);panel.add(panel3,BorderLayout.SOUTH);panel.setBackground(Color.white);panel1.setBackground(Color.white);panel2.setBackground(Color.white);panel3.setBackground(Color.white);Init();button.addActionListener(new ActionListener(){public void actionPerformed(ActionEvent e){int c_year,c_month,c_week;c_year=Integer.parseInt(com1.getSelectedItem().toString()); //得到當前所選年份c_month=Integer.parseInt(com2.getSelectedItem().toString())-1; //得到當前月份，并減1,計算機中的月為0－11c_week=use(c_year,c_month); //調用函數use，得到星期幾Resetday(c_week,c_year,c_month); //調用函數Resetday}});setContentPane(panel);setVisible(true);setResizable(false);}public void Init(){int year,month_num,first_day_num;String log[]={"日","一","二","三","四","五","六"};for(int i=0;i<7;i++){label.setText(log);}for(int i=0;i<49;i=i+7){label.setForeground(Color.red); //將星期日的日期設置為紅色}for(int i=6;i<49;i=i+7){label.setForeground(Color.red);//將星期六的日期也設置為紅色}for(int i=1;i<10000;i++){com1.addItem(""+i);}for(int i=1;i<13;i++){com2.addItem(""+i);}month_num=(int)(now.get(Calendar.MONTH)); //得到當前時間的月份year=(int)(now.get(Calendar.YEAR)); //得到當前時間的年份com1.setSelectedIndex(year-1); //設置下拉列表顯示為當前年com2.setSelectedIndex(month_num); //設置下拉列表顯示為當前月first_day_num=use(year,month_num);Resetday(first_day_num,year,month_num);}public int use(int reyear,int remonth){int week_num;now.set(reyear,remonth,1); //設置時間為所要查詢的年月的第一天week_num= (int)(now.get(Calendar.DAY_OF_WEEK));//得到第一天的星期return week_num;}public void Resetday(int week_log,int year_log,int month_log){int month_score_log; //判斷是否是閏年的標記int month_day_score; //存儲月份的天數int count;month_score_log=0;month_day_score=0;count=1;if(year_log%4==0&&year_log%100!=0||year_log%400==0){//判斷是否為閏年month_score_log=1;}month_log=month_log+1; //將傳來的月份數加1switch(month_log){case 1:case 3:case 5:case 7:case 8:case 10:case 12:month_day_score=31;break;case 4:case 6:case 9:case 11:month_day_score=30;break;case 2:if(month_score_log==1){month_day_score=29; }else{month_day_score=28;}break;}for(int i=7;i<49;i++){ //初始化標簽label.setText("");}week_log=week_log+6; //將星期數加6，使顯示正確month_day_score=month_day_score+week_log;for(int i=week_log;i<month_day_score;i++,count++){label.setText(count+"");}} }  //創建時鐘class Clock extends Canvas implements Runnable{MainFrame mf;Thread t;String time;Clock(MainFrame mf){this.mf=mf;setSize(400,40);setBackground(Color.white);t=new Thread(this); //實例化線程t.start(); //調用線程 }public void run(){while(true){try{t.sleep(1000); //休眠1秒鐘}catch(InterruptedException e){System.out.println("異常");}this.repaint(100);}}public void paint(Graphics g){Font f=new Font("宋體",Font.BOLD,16); SimpleDateFormat SDF=new SimpleDateFormat("yyyy'年'MM'月'dd'日'HH:mm:ss");//格式化時間顯示類型Calendar now=Calendar.getInstance();time=SDF.format(now.getTime()); //得到當前日期和時間g.setFont(f);g.setColor(Color.red);g.drawString(time,100,25);}}  public class Wnl{public static void main(String [] args){JFrame.setDefaultLookAndFeelDecorated(true);MainFrame start=new MainFrame();} }