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万年历查询java代码 一个简单的万年历java课程设计
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高分求Java编写的万年历源代码,能够显示当前系统时间和日期查询。
import java.text.SimpleDateFormat;
import java.util.Calendar;
public class TestDate {
public static final String[] weeks = { "日", "一", "二", "三", "四", "五", "六" };
public static void main(String[] args) {
Calendar c = Calendar.getInstance();
c.set(Calendar.YEAR,2011);//2011年
c.set(Calendar.MONTH,0);//java中Calendar类，月从0开始， 0代表一月
c.set(Calendar.DATE,1);//1号
int day = c.get(Calendar.DAY_OF_WEEK);//获致是本周的第几天地, 1代表星期天...7代表星期六
System.out.println(new SimpleDateFormat( "yyyy-MM-dd ").format(c.getTime()));
System.out.println("星期" + weeks[day-1]);
}
}
相关问答
Q1: 编写 万年历java代码例如1900年一月一日是星期一。
import java.util.Calendar;
import java.util.Date;
import java.util.Scanner;
public class MyCalendar
{
public static void main(String[] args)
{
Scanner scanner = new Scanner(System.in);
String reg = "^(\\d+)[^\\d]+((0?[1-9])|(1[012]))$";
while(true)
{
System.out.println("输入年月(年和月用非数字隔开:如2015.1)(什么都不输入直接退出)");
String line = scanner.nextLine().trim();
if("".equals(line))
{
scanner.close();
break;
}
if(!line.matches(reg))
{
continue;
}
int year = Integer.parseInt(line.replaceAll(reg, "$1"));
int month = Integer.parseInt(line.replaceAll(reg, "$2"));
System.out.println("日\t一\t二\t三\t四\t五\t六");
Calendar calendar = Calendar.getInstance();
// 这个月的1号是星期几
calendar.set(year, month - 1, 1);
int day = calendar.get(Calendar.DAY_OF_WEEK);
int start = Calendar.SUNDAY;
calendar.add(Calendar.DATE, -day + start);
while(start day)
{
System.out.print(calendar.get(Calendar.DATE) + "\t");
calendar.add(Calendar.DATE, 1);
start++;
}
calendar.set(year, month - 1, 1);
Date now = calendar.getTime();
calendar.set(year, month, 1);
Date next = calendar.getTime();
for(Date cur = now; cur.before(next);)
{
calendar.setTime(cur);
int x = calendar.get(Calendar.DATE);
String tmp = x 10 ? "0" + x : x + "";
System.out.print(tmp + "\t");
if(calendar.get(Calendar.DAY_OF_WEEK) == Calendar.SATURDAY)
{
System.out.println();
}
calendar.add(Calendar.DATE, 1);
cur = calendar.getTime();
}
calendar.add(Calendar.DATE, -1);
int to = calendar.get(Calendar.DAY_OF_WEEK);
int end = Calendar.SATURDAY;
while(to end)
{
calendar.add(Calendar.DATE, 1);
int x = calendar.get(Calendar.DATE);
String tmp = x 10 ? "0" + x : x + "";
System.out.print(tmp + "\t");
to++;
}
System.out.println();
}
}
}
Q2: JAVA万年历代码
/*
题目:输出任意年份任意月份万年历查询java代码的日历表(公元后)
思路:
1.已知1年1月1日是星期日,1 % 7 = 1 对应万年历查询java代码的是星期日,2 % 7 = 2 对应万年历查询java代码的是星期一,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:
Q3: java中，一段万年历代码，跑起来总是差4天，修改之后也只能让一部分月份的显示正确，代码如下
万年历查询java代码我改造了一下你万年历查询java代码的代码 :
package com.mikuma.calendar;
import java.util.GregorianCalendar;
import java.util.Scanner;
public class Calendar{
public static void main(String[] args){
int year = 0;
int month = 0;
Scanner scanner = new Scanner(System.in);
System.out.println("请输入您要查询万年历查询java代码的年份");
year = scanner.nextInt();
System.out.println("请输入您要查询的月份");
while (true){
month = scanner.nextInt();
if (month 0 || month 12){
System.out.println("月份输入有误万年历查询java代码，请重新输入");
}else{
break;
}
}
printPermanentCalendar(year, month);
}
/**
* 输出万年历
*
* @param year
* @param month
*/
private static void printPermanentCalendar(int year,int month){
int days = 0;
int totaldays = 0;//获取1990年至查询的年份的天数
for (int i = 1900; i year; i++){
totaldays = totaldays + (isLeapYear(i) ? 366 : 365);
}
int beforedays = 0;//到指定月份的天数
for (int i = 1; i = month; i++){
switch (i) {
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
days = 31;
break;
case 4:
case 6:
case 9:
case 11:
days = 30;
break;
case 2:
days = isLeapYear(year) ? 29 : 28;
break;
default:
break;
}
if (i month){
beforedays = beforedays + days;
}
}
totaldays = totaldays + beforedays;//总计天数万年历查询java代码，以判断周几；
int weekDay = 0;
int temp = (1 + totaldays) % 7;
if (temp == 0){//1990年1月1日星期一，据此日0天星期一，以此类推
weekDay = 0;
}else{
weekDay = temp;
}
System.out.println("星期日\t星期一\t星期二\t星期三\t星期四\t星期五\t星期六");
for (int i = 0; i weekDay; i++){
System.out.print("\t");
}
for (int i = 1; i = days; i++){
System.out.print(i + "\t");
if ((totaldays + i) % 7 == 6){
System.out.print("\n");
}
}
}
private static boolean isLeapYear(int year){
return new GregorianCalendar().isLeapYear(year);
}
}
运行:
对比了下 360日历:
结果正确
我们再测试下 2017 年 2月
对比 360 日历
也是正确
Q4: 需要一个java程序，最好是万年历的，要在500行左右的
Java-时钟万年历
clock.java代码如下：
/**
* Clock.java
* Summary 数字时间显示
* Created on 2005-8-14
* @author 高?
* remark 如有改动请发一份代码给我，邮箱gkgklovelove@eyou.com
*/
package Clock;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.text.*;
import java.util.*;
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); //实例化线程
t.start(); //调用线程
}
public void run(){
while(true){
try{
t.sleep(1000); //休眠1秒钟
}catch(InterruptedException e){
System.out.println("异常");
}
this.repaint(100);
}
}
public void paint(Graphics g){
Font f=new Font("宋体",Font.BOLD,16);
SimpleDateFormat SDF=new SimpleDateFormat("yyyy'年'MM'月'dd'日'HH:mm:ss");//格式化时间显示类型
Calendar now=Calendar.getInstance();
time=SDF.format(now.getTime()); //得到当前日期和时间
g.setFont(f);
g.setColor(Color.orange);
g.drawString(time,100,25);
}
MainFrame．java 的代码如下：
/**
* MainFrame.java
* Summary 万年历主类
* Created on 2005-8-14
* @author 高?
* remark 如有改动请发一份代码给我，邮箱gkgklovelove@eyou.com
*/
package Clock;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.text.*;
import java.util.*;
class MainFrame extends JFrame{
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();
JButton button=new JButton("查看");
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);
panel1.add(button);
for(int i=0;i49;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();
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
}});
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;i7;i++){
label[i].setText(log[i]);
}
for(int i=0;i49;i=i+7){
label[i].setForeground(Color.red); //将星期日的日期设置为红色
}
for(int i=6;i49;i=i+7){
label[i].setForeground(Color.green);//将星期六的日期设置为绿色
}
for(int i=1;i10000;i++){
com1.addItem(""+i);
}
for(int i=1;i13;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;
}
public void Resetday(int week_log,int year_log,int month_log){
int month_score_log; //判断是否是闰年的标记
int month_day_score; //存储月份的天数
int count;
month_score_log=0;
month_day_score=0;
count=1;
if(year_log%4==0year_log%100!=0||year_log%400==0){//判断是否为闰年
month_score_log=1;
}
month_log=month_log+1; //将传来的月份数加1
switch(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;i49;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;imonth_day_score;i++,count++){
label[i].setText(count+"");
}
}
public static void main(String [] args){
JFrame.setDefaultLookAndFeelDecorated(true);
MainFrame start=new MainFrame();
}
}
Q5: Java日历查询程序(万年历)
花了半个小时写了一个望采纳给好评。
import java.util.Scanner;
public class PrintCalendar {
/** Main method */
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
// Prompt the user to enter year
System.out.print("Enter full year (e.g., 2001): ");
int year = input.nextInt();
// Prompt the user to enter month
System.out.print("Enter month in number between 1 and 12: ");
int month = input.nextInt();
// Print calendar for the month of the year
printMonth(year, month);
}
/** Print the calendar for a month in a year */
public static void printMonth(int year, int month) {
// Print the headings of the calendar
printMonthTitle(year, month);
// Print the body of the calendar
printMonthBody(year, month);
}
/** Print the month title, e.g., May, 1999 */
public static void printMonthTitle(int year, int month) {
System.out.println(" " + getMonthName(month)
+ " " + year);
System.out.println("-----------------------------");
System.out.println(" Sun Mon Tue Wed Thu Fri Sat");
}
/** Get the English name for the month */
public static String getMonthName(int month) {
String monthName = "";
switch (month) {
case 1: monthName = "January"; break;
case 2: monthName = "February"; break;
case 3: monthName = "March"; break;
case 4: monthName = "April"; break;
case 5: monthName = "May"; break;
case 6: monthName = "June"; break;
case 7: monthName = "July"; break;
case 8: monthName = "August"; break;
case 9: monthName = "September"; break;
case 10: monthName = "October"; break;
case 11: monthName = "November"; break;
case 12: monthName = "December";
}
return monthName;
}
/** Print month body */
public static void printMonthBody(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 numberOfDaysInMonth = getNumberOfDaysInMonth(year, month);
// Pad space before the first day of the month
int i = 0;
for (i = 0; i startDay; i++)
System.out.print(" ");
for (i = 1; i = numberOfDaysInMonth; i++) {
System.out.printf("%4d", i);
if ((i + startDay) % 7 == 0)
System.out.println();
}
System.out.println();
}
/** Get the start day of month/1/year */
public static int getStartDay(int year, int month) {
final int START_DAY_FOR_JAN_1_1800 = 3;
// Get total number of days from 1/1/1800 to month/1/year
int totalNumberOfDays = getTotalNumberOfDays(year, month);
// Return the start day for month/1/year
return (totalNumberOfDays + START_DAY_FOR_JAN_1_1800) % 7;
}
/** Get the total number of days since January 1, 1800 */
public static int getTotalNumberOfDays(int year, int month) {
int total = 0;
// Get the total days from 1800 to 1/1/year
for (int i = 1800; 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 + getNumberOfDaysInMonth(year, i);
return total;
}
/** Get the number of days in a month */
public static int getNumberOfDaysInMonth(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) return isLeapYear(year) ? 29 : 28;
return 0; // If month is incorrect
}
/** Determine if it is a leap year */
public static boolean isLeapYear(int year) {
return year % 400 == 0 || (year % 4 == 0 year % 100 != 0);
}
}
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