「java输出节日」用java输出当前日期
今天给各位分享java输出节日的知识，其中也会对用java输出当前日期进行解释，如果能碰巧解决你现在面临的问题，别忘了关注本站，现在开始吧！
本文目录一览：
- 1、用java实现在控制台输出一年中所有节假日！
- 2、现在需要这样一段JAVA在节日来临的时候,能提醒显示 今天是XXX节,或明天是XXX节
- 3、设计java程序在屏幕输出:今天是某年某月某天星期几,将程序和运行结果截图上传？
- 4、java从控制台输入一个4位数的字符串代表年份，比如输入2014，用Calendar类，输出这一年的母亲节的日期
用java实现在控制台输出一年中所有节假日！
因为很多的节假日，没有规律性。所以程序实现只有写死日期。
可以做一个配置文件，手工填写假日信息，然后再由java显示出来。
现在需要这样一段JAVA在节日来临的时候,能提醒显示 今天是XXX节,或明天是XXX节
.java
*
*
* @author
* @version 1.00 2008/7/19
*/
import java.awt.*;
import java.awt.event.*;
import java.lang.StringBuffer;
import javax.swing.*;
import java.util.*;
import javax.swing.Timer;
import javax.swing.border.*;
public class AidyCalender extends JFrame implements ActionListener,ItemListener{
Date date = new Date();
private GregorianCalendar gregorianCalendar = new GregorianCalendar();
//定义中英文字符数组存储星期信息,用于转换显示
private String[] stringWeekEn = new String[] { "SUN", "MON", "TUE", "WED",
"THU", "FRI", "SAT" };
private String[] stringWeekCn = new String[] { "星期日", "星期一", "星期二", "星期三",
"星期四", "星期五", "星期六" };
//定义存储月份的信息数组,用于转换显示方示
private String[] stringMonthEn = new String[] { "Jan", "Feb", "Mar", "Apr",
"May", "Jun", "Jul", "Aug", "Sept", "Oct", "Nov", "Dec" };
private String[] stringMonthCn = {"一月","二月","三月","四月","五月","六月",
"七月","八月","九月","十月","十一月","十二月"};
private String[] sysNowTime = new String[6];//sysNowTime 用于存储系统时间的变量
private String[] sysRunTime = new String[6];
private JLabel []labelWeek = new JLabel[7];
private JLabel []labelDay = new JLabel[42];
private JLabel labelTime = new JLabel();
private JPanel panel1 = new JPanel();
private JPanel panel2 = new JPanel();
private JPanel panel3 = new JPanel();
private JComboBox combo1 = new JComboBox();
private JComboBox combo2 = new JComboBox();
private JButton buttonToday = new JButton();
private Border border = BorderFactory.createRaisedBevelBorder();
private Border border1 = BorderFactory.createLineBorder(Color.cyan,3);
public AidyCalender(String title) {
super(title);
for (int y = 1900; y 2101; y++) {
combo1.addItem(" " + new Integer(y).toString()+"年");
}
for (int m = 0;m12;m++){
combo2.addItem(" "+stringMonthCn[m]);
}
buttonToday.setText("今 天");
setLayout(new FlowLayout());
add(panel1);
add(panel2);
add(panel3);
panel1.setLayout(new GridLayout(1,3,10,0));
panel1.add(combo1);
combo1.addItemListener(this);
panel1.add(combo2);
combo2.addItemListener(this);
panel1.add(buttonToday);
buttonToday.addActionListener(this);
labelTime.setFont(new Font("宋体",Font.PLAIN,16));
labelTime.setForeground(Color.MAGENTA);
panel1.add(labelTime);
Timer time = new Timer(1000,new TimerListener());
time.addActionListener(new TimerListener());
//time.setRepeats(true);
time.start();
//labelTime.addAncestorListener(new TimerListener());
panel2.setLayout(new GridLayout(7,7,0,10));
panel2.setBackground(Color.white);
for(int i=0;i7;i++){
labelWeek[i] = new JLabel();
labelWeek[i].setHorizontalAlignment(0);
if(i==0||i==6){
labelWeek[i].setBackground(Color.blue);
labelWeek[i].setForeground(Color.RED);
labelWeek[i].setFont(new Font("黑体",Font.BOLD,14));
}
else{
labelWeek[i].setForeground(Color.BLACK);
labelWeek[i].setFont(new Font("新宋体",Font.PLAIN,14));
}
labelWeek[i].setText(stringWeekCn[i]);
panel2.add(labelWeek[i]);
}
for(int i= 0;i42;i++){
labelDay[i] = new JLabel();
labelDay[i].setHorizontalAlignment(0);
labelDay[i].setText("");
panel2.add(labelDay[i]);
}
addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){
System.exit(0);
}
});
setSize(300,300);
setBounds(250, 200, 400, 360);
setVisible(true);
setResizable(false);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
getSysDate();
setNowDate();
}
public void actionPerformed(ActionEvent ae){
if(ae.getSource()==buttonToday){
setNowDate();
}
}
public void itemStateChanged(ItemEvent aa){
setChangeDate();
}
public int turnWeek(String week){
int i;
for(i=0;i7;i++)
if(week.equalsIgnoreCase(stringWeekEn[i]))
break;
return i;
}
public int turnMonth(String month){
/**
*int turnMonth(String month)
*@month 系统日期中的月,诸如Jan\Feb
*@return int
*返回一个整数值,用于寻找stringMonthCn[]数组中对应的中文月份
*/
int i;
for(i=0;i12;i++)
if(month.equalsIgnoreCase(stringMonthEn[i]))
break;
return i;
}
/**
*setNowDate()
*设置当前系统日期
*/
public void setNowDate(){
setSysDate(getNowYear(),getNowMonth());
getSysRunDate();
setDateNull();
combo1.setSelectedIndex(getShowYear() - 1900);
combo2.setSelectedIndex(getShowMonth());
setDays(getMonthDays(getNowYear(),getNowMonth()),getInitWeek(sysRunTime[0]),getNowDay());
//labelTime.setText(sysNowTime[3]);
//labelTime.setHorizontalAlignment(0);
}
/**Integer getShowYear()
*获取组合框中应该显示的年份
*/
public void setSysDate(int year,int month){
gregorianCalendar.set(year,month,1);
}
public void setDateNull(){
for(int i=0;i42;i++){
labelDay[i].setText("");
}
}
public void setChangeDate(){
setSysDate(getComboYear(),getComboMonth());
getSysRunDate();
setDateNull();
setDays(getMonthDays(getComboYear(),getComboMonth()),getInitWeek(sysRunTime[0]),-1);
}
public int getMonthDays(int year, int month) {
/**
*返回所选年月的天数,因为数组中的数值从0开始,所以3\5\8\10分别代表4\6\9\11几个小月.
*而1代表2月,经过是否为闰年判断,选择返回28或29天.
*其余月份为大月,返回31天.
**/
switch (month) {
case 3:
case 5:
case 8:
case 10:
return 30;//小月返回30天
case 1:
if (gregorianCalendar.isLeapYear(year)) {
//isLeapYear(year)确定当前纪元中的指定年份是否为闰年。
return 29;
} else {
return 28;
}//闰年的二月返回29天，平年返回28天
default:
return 31;
//大月返回31天
}
}
/**
*int getComboYear()
*获取组合框中的年份
*/
public void getSysDate(){
date = gregorianCalendar.getTime();
sysNowTime = (date.toString()).split(" ");
}
public void getSysRunDate(){
date = gregorianCalendar.getTime();
sysRunTime = (date.toString()).split(" ");
}
public int getComboYear(){
return combo1.getSelectedIndex()+1900;
}
/**
*int getComboMonth()
*获取月组合框中的整数值,
*/
public int getComboMonth(){
return combo2.getSelectedIndex();
}
public int getInitWeek(String initWeek){
/**
*getWeekNow(String initWeek)
*@para nowWeek 系统日期中的星期
*返回当月中的1号是从星期几开始
*/
int nowWeek = 0 ;
for(int i = 0;i7;i++){
if(initWeek.equalsIgnoreCase(stringWeekEn[i])){
nowWeek = i;
break;
}
}
return nowWeek;
}
public int getNowYear(){
return Integer.parseInt(sysNowTime[5]);
}
public int getNowMonth(){
int nowMonth=0;
for(int i=0;i12;i++){
if(sysNowTime[1].equalsIgnoreCase(stringMonthEn[i]));
nowMonth=i;
break;
}
return nowMonth;
}
public int getNowDay(){
return Integer.parseInt(sysNowTime[2]);
}
public Integer getShowYear(){
return Integer.parseInt(sysNowTime[5]);
}
public Integer getShowMonth(){
/**
*Integer getShowMonth()
*获取在组给框中显示的中文格式月份:如七月\八月等
*/
return turnMonth(sysNowTime[1]);
}
public void setDays(int monthDays,int initWeek,int day){
/**
*void setDays(int monthDays,int initWeek,int day)
*@para monthDays 本月天数
*@para initWeek 初始星期
*@para day 今天日
*设置月历
*/
setDateNull();
for(int i=initWeek;iinitWeek+monthDays+1;i++){
if((i-initWeek+1)==day){
labelDay[i].setBorder(border1);
labelDay[i].setForeground(Color.BLUE);
labelDay[i].setFont(new Font("黑体",Font.BOLD,20));
}else if((i%7==0)||(i%7==6))
labelDay[i].setForeground(Color.RED);
else{
labelDay[i].setForeground(Color.BLACK);
}
labelDay[i].setText(String.valueOf(i-initWeek+1));
}
for(int i=initWeek+monthDays;i42;i++)
labelDay[i].setText("");
}
class TimerListener implements ActionListener{
//AdapterDemo var=new AdapterDemo("万年历程序--Aidy");
public void actionPerformed(ActionEvent e) {
GregorianCalendar g = new GregorianCalendar();
String clock = new String((g.getTime().toString().split(" "))[3]);
labelTime.setText(clock);
}
}
public static void main(String args[])
{
try{
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
}catch(Exception e){
throw new RuntimeException(e);
}
AidyCalender var=new AidyCalender("万年历程序--Aidy");
}
}
本文来自CSDN博客，转载请标明出处：
设计java程序在屏幕输出:今天是某年某月某天星期几,将程序和运行结果截图上传？
1.使用java.util.Date类做：
import java.util.Date;
public class test {
public static void main(String[] args) {
Date dt = new Date();
int year = dt.getYear() + 1900; //getYear()返回的是1900年距今多少年,故如果想获取准确年份，必须加上1900
int month = dt.getMonth() + 1; //getMonth()返回的是0-11的数，故必须要加1
int week = dt.getDate();
int day = dt.getDay(); //getDay()返回的是0-6之间的数，所以后面要跟判断
String weekShow="";
if (day==0) {
weekShow="星期日";
}else if (day==1) {
weekShow="星期一";
}else if (day==2) {
weekShow="星期二";
}else if (day==3) {
weekShow="星期三";
}else if (day==4) {
weekShow="星期四";
}else if (day==5) {
weekShow="星期五";
}else if (day==6) {
weekShow="星期六";
}
System.out.println("今天是"+year+"年"+month+"月"+week+"日"+weekShow+"!");
}
}
2.使用java.util.Calendar类
import java.util.Calendar;
import java.util.Scanner;
public class test{
public static void main(String[] args) {
Calendar c = Calendar.getInstance();
int year = c.get(Calendar.YEAR);
int month =c.get(Calendar.MONTH) + 1; //Calendar.MONTH返回的是0-11的数，故必须要加1
int week = c.get(Calendar.DATE);
int day = c.get(Calendar.DAY_OF_WEEK);
String weekShow="";
if (day==0) {
weekShow="星期日";
}else if (day==1) {
weekShow="星期一";
}else if (day==2) {
weekShow="星期二";
}else if (day==3) {
weekShow="星期三";
}else if (day==4) {
weekShow="星期四";
}else if (day==5) {
weekShow="星期五";
}else if (day==6) {
weekShow="星期六";
}
System.out.println("今天是"+year+"年"+month+"月"+week+"日"+weekShow+"!");
}
}
java从控制台输入一个4位数的字符串代表年份，比如输入2014，用Calendar类，输出这一年的母亲节的日期
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
public class MotherDay {
private static Calendar cal;
private static DateFormat df;
public static void main(String[] args) {
if(null == args || args.length 1) {
System.out.println("请输入年份！");
return;
}
int year;
try {
year = Integer.parseInt(args[0]);
} catch (NumberFormatException e) {
System.out.println("请输入正确的年份！");
return;
}
df = new SimpleDateFormat("M月dd日");
cal = Calendar.getInstance();
cal.set(Calendar.YEAR, year);
cal.set(Calendar.MONTH, 4); // 月份的起始为0
int maxDate = cal.getActualMaximum(Calendar.DATE);
int sundays = 0;
for(int i = 1; i = maxDate; i ++) {
cal.set(Calendar.DATE, i);
if(cal.get(Calendar.DAY_OF_WEEK) == Calendar.SUNDAY) {
sundays ++;
if(sundays == 2) {
break;
}
}
}
System.out.println(year + "年的母亲节是" + df.format(cal.getTime()));
}
}
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