Question

JAVA万年历代码

Answer 1

/*
题目:输出任意年份任意月份的日历表(公元后)
思路:
    1.已知1年1月1日是星期日,1 % 7 = 1 对应的是星期日,2 % 7 = 2 对应的是星期一,以此类推;
    2.计算当年以前所有天数+当年当月1号之前所有天数;
      a.年份分平年闰年,平年365天,闰年366天;
      b.闰年的判断方法year % 400 == 0 || (year % 100 != 0 && year % 4 == 0)若为真,则为闰年否则为平年;
      c.定义平年/闰年数组,包含各月天数;
      d.遍历数组求和,计算当年当月前总天数;
      e.当年以前所有天数+当年当月前总天数+1即为1年1月1日到当年当月1日的总天数;
    3.总天数对7取模,根据结果判断当月1号是星期几,输出空白区域;
    4.输出当月日历表,逢星期六换行
*/
import java.util.Scanner;
class FindMonthList {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        System.out.println("请输入年份:");
        int year = sc.nextInt();            //年份
        if (year < 1) {                        //判断非法输入年份
            System.out.println("输入错误!");
            return;
        }
        System.out.println("请输入月份:");
        int month = sc.nextInt();            //月份
        if (month < 1 || month > 12) {        //判断非法输入月份
            System.out.println("输入错误!");
            return;
        }
        //输出表头
        System.out.println("-------" + year + " 年 " + month + " 月 " + "-------");
        System.out.println();
        System.out.println("日  一  二  三  四  五  六");

        //计算当前年份以前所有天数beforeYearTotalDay;每4年一个闰年,闰年366天,平年365天
        int beforeYearTotalDay = ((year - 1) / 4 * 366) + (year-1 - ((year - 1) / 4)) * 365;
        int[] arrLeapYear = {0,31,29,31,30,31,30,31,31,30,31,30,31};    //闰年各月天数    int数组
        int[] arrNormalYear = {0,31,28,31,30,31,30,31,31,30,31,30,31};    //平年各月天数    int数组
        int beforeMonthTotalDay = 0;                                    //定义本年当月之前月份的总天数
        if (year % 400 == 0 || (year % 100 != 0 && year % 4 == 0)) {    //判断当前年份是否是闰年
            for (int i = 0 ; i < month ; i ++ ) {    //for循环计算当月之前总天数
                //计算当前月份之前的所有天数
                beforeMonthTotalDay = beforeMonthTotalDay + arrLeapYear[i];
            }
            //判断当月1日是星期几
            int totalDay = beforeYearTotalDay + beforeMonthTotalDay + 1;
            int week = totalDay % 7;//已知1年1月1日是星期日,即模7得1对应的是星期日
            for (int i = 0 ; i < (week - 1 + 7) % 7 ; i ++) {    //如果写成i < (week-1)会出现i<-1的情况
                System.out.print("    ");//输出开头空白
            }
            for (int i = 1 ;i <= arrLeapYear[month] ;i ++ ) {    //for循环输出各月天数
                System.out.print(i + "  ");
                if (i < 10 ) {        //小于10的数补一个空格,以便打印整齐
                    System.out.print(" ");
                }
                if (i % 7 == ((7-(week - 1)) % 7 ) || i == arrLeapYear[month]) {//每逢星期六/尾数换行
                    System.out.println();
                }
            }

        } else {        //不是闰年就是平年
            for (int i = 0 ; i < month ; i ++ ) {    //for循环计算出当月之前月份总天数
                beforeMonthTotalDay = beforeMonthTotalDay + arrNormalYear[i];
            }
            //判断当月1日是星期几
            int totalDay = beforeYearTotalDay + beforeMonthTotalDay + 1;
            int week = totalDay % 7;//已知1年1月1日是星期日,即模7得1对应的是星期日
            for (int i = 0 ; i < (week - 1 + 7) % 7 ; i ++) {    //如果写成i < (week-1)会出现i<-1的情况
                System.out.print("    ");//输出开头空白
            }
            for (int i = 1 ;i <= arrNormalYear[month] ;i ++ ) {//for循环输出各月天数
                System.out.print(i + "  ");
                if (i < 10 ) {            //小于10的数补一个空格,以便打印整齐
                    System.out.print(" ");
                }
                if (i % 7 == ((7-(week - 1)) % 7 ) || i == arrNormalYear[month]) {//每逢星期六/尾数换行
                    System.out.println();
                }
            }
        }
    }
}

显示效果:

Answer 2

import java.io.*;
class putout{
public void putout(int f,int x,int y){
int i;
int a[]= new int[40];
System.out.println(" 日 一 二 三 四 五 六 "+" "+f+"月");
for (i=0;i<x;i++)
{System.out.print(" "); }
for(i=x;i<x+y;i++)
a[i]=i-x+1;
for(i=x;i<x+y;i++)
{
if ((i%7==0)&&(i>0))
System.out.print("\n");
if (a[i]<10)
System.out.print(" "+a[i]);
else System.out.print(" "+a[i]);
}
System.out.println("\n");
}
}

class st{
public static void main(String args[])throws IOException{
putout p=new putout();
int year,mouth,y=1,t,i;
InputStreamReader ir;
BufferedReader in;
ir=new InputStreamReader(System.in);
in=new BufferedReader(ir);
System.out.print("请输入一个年份：");
String s=in.readLine();
year=Integer.parseInt(s);
if((year%4==0 && year%100!=0)||(year%400==0))
mouth=1;
else
mouth=0;
y=year;
for(i=1;i<year;i++)
{if((i%4==0 && i%100!=0)||(i%400==0))
y++;}
y=y%7;
for(i=1;i<13;i++){
switch(i){
case 1: {p.putout(1,y,31);y=(y+31)%7;break;}
case 2: {p.putout(2,y,28+mouth);y=(y+28+mouth)%7;break;}
case 3: {p.putout(3,y,31);y=(y+31)%7;break;}
case 4: {p.putout(4,y,30);y=(y+30)%7;break;}
case 5: {p.putout(5,y,31);y=(y+31)%7;break;}
case 6: {p.putout(6,y,30);y=(y+30)%7;break;}
case 7: {p.putout(7,y,31);y=(y+31)%7;break;}
case 8: {p.putout(8,y,31);y=(y+31)%7;break;}
case 9: {p.putout(9,y,30);y=(y+30)%7;break;}
case 10: {p.putout(10,y,31);y=(y+31)%7;break;}
case 11: {p.putout(11,y,30);y=(y+30)%7;break;}
case 12: {p.putout(12,y,31);y=(y+31)%7;break;}
}
}
}
}

不是我写的~ copy的~~

Answer 3

package clock;

/** *//**
* MainFrame.java
* Summary 万年历主类
* Created on
* @author
* remark
*/

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.GridLayout;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.Date;
import java.util.Calendar;

import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;

class MainFrame extends JFrame {
/** *//**
*
*/
private static final long serialVersionUID = 1L;
JPanel panel = new JPanel(new BorderLayout());
JPanel panel1 = new JPanel();
JPanel panel2 = new JPanel(new GridLayout(7, 7));
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();
int re_year, re_month;
int x_size, y_size;
String year_num;
Calendar now = Calendar.getInstance(); // 实例化Calendar

MainFrame() {
super("万年历");
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);
for (int i = 0; i < 49; i++) {
label[i] = new JLabel("", JLabel.CENTER);// 将显示的字符设置为居中
panel2.add(label[i]);
}
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();
com1.addActionListener(new ClockAction());
com2.addActionListener(new ClockAction());

setContentPane(panel);
setVisible(true);
setResizable(false);
}

class ClockAction implements ActionListener {
public void actionPerformed(ActionEvent arg0) {
int c_year, c_month, c_week;
c_year = Integer.parseInt(com1.getSelectedItem().toString()); // 得到当前所选年份
c_month = Integer.parseInt(com2.getSelectedItem().toString()) - 1; // 得到当前月份，并减1,计算机中的月为0－11
c_week = use(c_year, c_month); // 调用函数use，得到星期几
Resetday(c_week, c_year, c_month); // 调用函数Resetday
}
}

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[i].setText(log[i]);
}
for (int i = 0; i < 49; i = i + 7) {
label[i].setForeground(Color.red); // 将星期日的日期设置为红色
}
for (int i = 6; i < 49; i = i + 7) {
label[i].setForeground(Color.green);// 将星期六的日期设置为绿色
}
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)); // 得到当前时间的月份
year = (int) (now.get(Calendar.YEAR)); // 得到当前时间的年份
com1.setSelectedIndex(year - 1); // 设置下拉列表显示为当前年
com2.setSelectedIndex(month_num); // 设置下拉列表显示为当前月
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); // 设置时间为所要查询的年月的第一天
week_num = (int) (now.get(Calendar.DAY_OF_WEEK));// 得到第一天的星期
return week_num;
}

@SuppressWarnings("deprecation")
public void Resetday(int week_log, int year_log, int month_log) {
int month_day_score; // 存储月份的天数
int count;
month_day_score = 0;
count = 1;

Date date = new Date(year_log, month_log + 1, 1); // now
Calendar cal = Calendar.getInstance();
cal.setTime(date);
cal.add(Calendar.MONTH, -1); // 前个月
month_day_score = cal.getActualMaximum(Calendar.DAY_OF_MONTH);// 最后一天

for (int i = 7; i < 49; i++) { // 初始化标签
label[i].setText("");
}
week_log = week_log + 6; // 将星期数加6，使显示正确
month_day_score = month_day_score + week_log;
for (int i = week_log; i < month_day_score; i++, count++) {
label[i].setText(count + "");
}
}

public static void main(String[] args) {
JFrame.setDefaultLookAndFeelDecorated(true);
new MainFrame();
}
}