题目：万年历应用小程序一、题目陈述：设计一个万年历，要求具有显示年份、月份、日期的功能，与windowsXP 系统的日期与时间的界面和功能类似。

二、问题分析：万年历的界面可由内容面板类panel 和spinner 、textArea 、comboBox 等容器构成；布局可以由BorderLayout 、FlowLayout 、GridLayout 使其达到美观整齐的效果。

万年历功能的实现是通过添加相应的监听器和事件处理函数来完成的。

三、题目设计：（一）、类设计：1、 面板类CalendarDemo ：嵌入显示月份的comboBox 和显示年份的spinner ，以及显示日期的textArea 。

2、 窗口类CalendarTest ：镶入面板，设计窗口大小等属性，并包含主函数。

运行后显示该窗口。

3、 类与类之间的关系：（二）、界面设计：根据windows 的日期界面，利用JPanel 提供的BorderLayout 、FlowLayout ，将包含comboBox 和spinner 的panel1放在NORTH 区，包含textArea 的panel2放在CENTER 区。

CalendarDemo 类的对象panel 的titledBorder 设置为“日期”（三）、事件处理：匿名内部类事件监听器做事件处理：用comboBox实现月份变换改变日期变换的PopupMenuListener()、用spinner实现年份变换改变日期变换的ChangeListener()。

具体处理方式：（四）、主要的成员变量和成员函数：1、面板类CalculatorDemo：JComboBox comboBox；JSpinner spinner；JTextArea textArea；JPanel panel1,panel2；String[] monthsString[] date；int thisYear, thisMonth；Public void typeset() ；2、窗口类CalculatorTest：CalendarDemo panel；public static void main；四、源代码：import javax.swing.*;import java.awt.*;import javax.swing.event.*;public class CalendarDemo extends JPanel{JComboBox comboBox;JSpinner spinner;JTextArea textArea;JPanel panel1,panel2;String[] months = { "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" };String[] date = { "日", "一", "二", "三", "四", "五", "六" };int thisYear , thisMonth;public CalendarDemo(){super(new BorderLayout());setBorder(BorderFactory.createTitledBorder("日期"));comboBox = new JComboBox(months);spinner = new JSpinner(new SpinnerNumberModel(2006, 1980, 2099, 1));textArea = new JTextArea();panel1=new JPanel(new FlowLayout());panel2=new JPanel(new FlowLayout());panel1.add(comboBox);panel1.add(spinner);panel2.add(textArea);add(panel1,BorderLayout.NORTH);add(panel2,BorderLayout.CENTER);comboBox.setSelectedItem( "十二月");thisMonth =comboBox.getSelectedIndex()+1;comboBox.addPopupMenuListener(new PopupMenuListener() {public void popupMenuCanceled(PopupMenuEvent e) {}public void popupMenuWillBecomeInvisible(PopupMenuEvent e) {thisMonth = comboBox.getSelectedIndex() + 1;typeset();}public void popupMenuWillBecomeVisible(PopupMenuEvent e) {}});spinner.setValue( 2006);spinner.addChangeListener(new ChangeListener() {public void stateChanged(ChangeEvent e) {thisYear = Integer.parseInt(spinner.getValue().toString());typeset();}});textArea.setBorder(BorderFactory.createLoweredBevelBorder());textArea.setEditable(false);textArea.setTabSize(3);typeset();}public void typeset(){textArea.setText( "");int jan,march,may,july,augest,oct,dec;int feb=28;int april,june,sept,nov;int day,days,tempdays;int i,j,num=1;jan=march=may=july=augest=oct=dec=31;april=june=sept=nov=30;i=j=0;day=days=tempdays=0;thisYear = 2006;if(thisYear%4==0){if(thisYear%100==0){ if(thisYear%400==0) feb=29;else feb=28;}else feb=29;}else feb=28;tempdays=(thisYear-1980)/4*(365*3+366)+((thisYear-1980)%4)*365+29-feb;switch (thisMonth){case 1:days=jan;day=tempdays%7;break;case 2:days=feb;day=(jan+tempdays)%7;break;case 3:days=march;day=(jan+feb+tempdays)%7 ;break;case 4:days=april;day=(jan+feb+march+tempdays)%7 ;break;case 5:days=may;day=(jan+feb+march+april+tempdays)%7 ;break;case 6:days=june;day=(jan+feb+march+april+may+tempdays)%7 ;break;case 7:days=july;day=(jan+feb+march+april+may+june+tempdays)%7 ;break;case 8:days=augest;day=(jan+feb+march+april+may+june+july+tempdays)%7 ;break;case9:days=sept;day=(jan+feb+march+april+may+june+july+augest+tempdays)%7 ;break;case10:days=oct;day=(jan+feb+march+april+may+june+july+augest+sept+tempdays)%7;break;case11:days=nov;day=(jan+feb+march+april+may+june+july+augest+sept+oct+tempdays)%7 ;break;case12:days=dec;day=(jan+feb+march+april+may+june+july+augest+sept+oct+nov+tempdays)%7 ;br eak;}for(i=0;i<7;i++)textArea.append("\t"+date[i]);textArea.append( "\n");if(day<5){ textArea.append( "\t \t ");for(i=0,j=3;i<day;i++,j++)textArea.append("\t ");}else if(day==6){textArea.append("\t ");j=2;}else j=1;for(num=1;num<=days;num++,j++){if(num<10) textArea.append(" \t" + num);else textArea.append("\t" + num);if((j!=0)&&((j%7)==0)) textArea.append("\n");}textArea.append("");}}import java.awt.*;import javax.swing.*;public class CalendarTest extends JFrame{CalendarDemo panel;public CalendarTest(){super("Karen's Calendar");Container contentPane = getContentPane();panel = new CalendarDemo();contentPane.add(panel);setBounds(300, 200, 295, 240);setResizable(false);setVisible(true);}public static void main(String[] args){CalendarTest calFr = new CalendarTest();calFr.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);}}五、收获体会：1、写监听器类的时候要覆盖它的全部父类函数，因为它是抽象类2、学会了使用java自带的库函数3、类与类之间数据通过类对象的传递4、尝试了创建事件监听器的4种方法。