一、类图
二、代码与界面
简单的分层思想，代码目录如下：
计算日期的业务类操作代码：printDate.java;具体包括如下方法。
2.1 增加计算星期几的方法weekDay()，利用蔡勒（Zeller）公式.即w=y+[y/4]+[c/4]-2c+[26(m+1)/10]+d-1：
公式中的符号含义如下,w：星期；c：世纪-1；y：年（两位数）；m：月（m大于等于3,小于等于14,即在蔡勒公式中,某年的1、2月要看作上一年的13、14月来计算,比如2003年1月1日要看作2002年的13月1日来计算）；d：日；[ ]代表取整,即只要整数部分.(C是世纪数减一,y是年份后两位,M是月份,d是日数.1月和2月要按上一年的13月和 14月来算,这时C和y均按上一年取值.)
算出来的W除以7,余数是几就是星期几.如果余数是0,则为星期日.
static String weekDay(int y,int m, int d)
{
if(m==1||m==2) {
m+=12;
y--;
}
int week=(d+2*m+3*(m+1)/5+y+y/4-y/100+y/400+1)%7;
String weekstr="";
switch(week)
{
case 1: weekstr="星期一"; break;
case 2: weekstr="星期二"; break;
case 3: weekstr="星期三"; break;
case 4: weekstr="星期四"; break;
case 5: weekstr="星期五"; break;
case 6: weekstr="星期六"; break;
case 0: weekstr="星期日"; break;
}
return weekstr;
}
2.2 增加计算上一天日期的方法lastDate,代码如下
public String lastDate(int year, int month, int day)//lastDate方法
{
String lastDate = null;
checkLeapYear(year);
check(year, month, day) ;
if(month==1 && day==1)
{
year--;
month = 12;
day = 31;
}
else if(day==1 && month!=1)
{
month = month-1;
day = m[month];
}
else
{
day--;
}
lastDate=year+"年"+month+"月"+day+"日";
m[2] = 28;
return lastDate;
}
2.3 计算下一天日期方法NextDate
public static String NextDate(int year,int month,int day){
if(((year%4==0&&year%100!=0)||year%400==0)&&month==2)
{
if(day==29){day=1;month++;}
else day++;
}
else if(month==12)
{
if(day==31){
day=1;
month=1;
year++;
}
else day++;
}
else if(month==1||month==3||month==5||month==7||month==8||month==10)
{
if(day==31)
{
day=1;
month++;
}
else day++;
}
else if(month==2||month==4||month==6||month==11||month==12&&day==30)
{
if(month==2&&day==28){
day=1;
month++;
}
else if(day==30)
{
day=1;
month++;
}
else day++;
}
else day++;
String date=year+"年"+month+"月"+day+"日";
return date;
}
3.界面设计代码
package softwareTest;
import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JButton;
import java.awt.BorderLayout;
import javax.swing.JEditorPane;
import javax.swing.JTextField;
import javax.swing.JTextPane;
import java.awt.Color;
import java.awt.SystemColor;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.ActionEvent;
public class windowsDesign {
private printDate dat;
private JFrame jFrame = new JFrame("输出日期");
private JButton okButton = new JButton("OK");
private JButton cancelButton = new JButton("Cancel");
private JLabel yearLabel = new JLabel("年：");
private JLabel monthLabel = new JLabel("月：");
private JLabel dayLabel = new JLabel("日:");
private JLabel weekDayLabel = new JLabel("这天是星期：");
private JLabel lastDayLabel = new JLabel("上一天是：");
private JLabel nextDayLabel = new JLabel("下一天是：");
private JLabel infoLabel = new JLabel("请输入需要计算的年月日");
private JTextField yearText = new JTextField(10);
private JTextField monthText = new JTextField(10);
private JTextField dayText = new JTextField(10);
private JTextField weekDayText = new JTextField(20);
private JTextField lastDayText = new JTextField(20);
private JTextField nextDayText = new JTextField(20);
public windowsDesign(){
dat = new printDate();
okButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
if(e.getSource() == okButton){
int year = Integer.parseInt( yearText.getText() );
int month = Integer.parseInt( monthText.getText() );
int day = Integer.parseInt( dayText.getText() );
if(dat.check(year, month, day)==1)
{
String weekDay = null;
weekDay=dat.weekDay(year, month, day);
weekDayText.setText(weekDay);
}
lastDayText.setText( dat.lastDate(year, month, day) );
nextDayText.setText( dat.NextDate(year, month, day) );
}
}
});
/*
* 点击取消按钮清空文本框的内容
*/
cancelButton.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
if(e.getSource() == cancelButton){
yearText.setText("");
monthText.setText("");
dayText.setText("");
weekDayText.setText("");
lastDayText.setText("");
nextDayText.setText("");
}
}
});
jFrame.setLayout(null);
infoLabel.setBounds(5,5,220,30);//设置标签的位置与大小
yearLabel.setBounds(5,35,30,30);
yearText.setBounds(25,35,50,30);
monthLabel.setBounds(75,35,30,30);
monthText.setBounds(105,35,30,30);
dayLabel.setBounds(135,35,30,30);
dayText.setBounds(165,35,30,30);
okButton.setBounds(10,70,75,20);
cancelButton.setBounds(120,70,75,20);
weekDayLabel.setBounds(5,95,100,20);
weekDayText.setBounds(110,95,100,20);
lastDayLabel.setBounds(5, 125, 100, 20);
lastDayText.setBounds(110, 125, 100, 20);
nextDayLabel.setBounds(5, 155, 100, 20);
nextDayText.setBounds(110, 155, 100, 20);
jFrame.add(infoLabel);
jFrame.add(yearLabel);
jFrame.add(yearText);
jFrame.add(monthLabel);
jFrame.add(monthText);
jFrame.add(dayLabel);
jFrame.add(dayText);
jFrame.add(okButton);
jFrame.add(cancelButton);
jFrame.add(weekDayLabel);
jFrame.add(weekDayText);
jFrame.add(lastDayLabel);
jFrame.add(lastDayText);
jFrame.add(nextDayLabel);
jFrame.add(nextDayText);
jFrame.setSize(300,250);//设置窗口大小
jFrame.setVisible(true);
}
public static void main(String[] args){
new windowsDesign();
}
}
4.运行效果
时间： 2024-10-07 21:38:15