综合运用gui编程、事件处理、calendar类应用等知识设计一款月历,要求能通过输入(或选择)年月的方式正确显示当前月份的所有日期。
时间: 2023-04-23 16:06:21 浏览: 177
这款月历需要使用GUI编程来实现界面的设计,同时需要使用事件处理来响应用户的操作。为了正确显示当前月份的所有日期,需要使用calendar类来获取当前月份的日期信息。用户可以通过输入或选择年月的方式来切换月份,从而查看不同月份的日期。
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用java语言,综合运用GUI编程、事件处理、Calendar类应用等知识设计一款月历,要求能通过输入(或选择)年月的方式正确显示当前月份的所有日期。
好的,我会尽力回答你的问题。首先,我们可以使用Java Swing GUI框架来实现月历的设计。下面是一个示例代码:
```java
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Calendar;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class MonthCalendar extends JFrame implements ActionListener {
private static final long serialVersionUID = 1L;
private JLabel monthLabel;
private JButton previousButton, nextButton;
private JPanel calendarPanel;
private Container container;
private Calendar calendar;
private int year, month, day;
public MonthCalendar() {
super("Month Calendar");
container = getContentPane();
container.setLayout(new BorderLayout());
// 创建月份标签
monthLabel = new JLabel("", JLabel.CENTER);
monthLabel.setForeground(Color.BLUE);
// 创建日历面板
calendarPanel = new JPanel(new GridLayout(0, 7));
calendarPanel.setBorder(BorderFactory.createLineBorder(Color.BLACK));
// 创建上一个月按钮
previousButton = new JButton("<<");
previousButton.addActionListener(this);
// 创建下一个月按钮
nextButton = new JButton(">>");
nextButton.addActionListener(this);
// 添加组件到窗体
container.add(monthLabel, BorderLayout.NORTH);
container.add(calendarPanel, BorderLayout.CENTER);
container.add(previousButton, BorderLayout.WEST);
container.add(nextButton, BorderLayout.EAST);
// 设置窗口属性
setSize(400, 300);
setVisible(true);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// 初始化日历
calendar = Calendar.getInstance();
year = calendar.get(Calendar.YEAR);
month = calendar.get(Calendar.MONTH);
day = calendar.get(Calendar.DATE);
updateCalendar(year, month);
}
/**
* 更新日历面板
*
* @param year
* @param month
*/
private void updateCalendar(int year, int month) {
calendar.set(year, month, 1);
int firstDayOfWeek = calendar.get(Calendar.DAY_OF_WEEK);
int daysInMonth = calendar.getActualMaximum(Calendar.DAY_OF_MONTH);
// 清空原有组件
calendarPanel.removeAll();
// 添加星期标签
String[] weekDays = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
for (int i = 0; i < weekDays.length; i++) {
JLabel weekLabel = new JLabel(weekDays[i], JLabel.CENTER);
weekLabel.setFont(new Font("Serif", Font.BOLD, 14));
calendarPanel.add(weekLabel);
}
// 填充日历面板
for (int i = 1; i < firstDayOfWeek; i++) {
calendarPanel.add(new JLabel(""));
}
for (int i = 1; i <= daysInMonth; i++) {
JButton dayButton = new JButton(Integer.toString(i));
dayButton.setFont(new Font("Serif", Font.PLAIN, 14));
dayButton.setPreferredSize(new Dimension(50, 50));
dayButton.addActionListener(new DateActionListener(i));
calendarPanel.add(dayButton);
}
// 更新月份标签
monthLabel.setText(year + "-" + (month + 1));
}
/**
* 上一个月按钮事件处理
*/
private void previousButtonActionPerformed() {
if (month == 0) {
year -= 1;
month = 11;
} else {
month -= 1;
}
updateCalendar(year, month);
}
/**
* 下一个月按钮事件处理
*/
private void nextButtonActionPerformed() {
if (month == 11) {
year += 1;
month = 0;
} else {
month += 1;
}
updateCalendar(year, month);
}
/**
* 日期按钮事件处理
*/
private class DateActionListener implements ActionListener {
private int day;
public DateActionListener(int day) {
this.day = day;
}
public void actionPerformed(ActionEvent e) {
System.out.println(year + "-" + (month + 1) + "-" + day);
}
}
/**
* 按钮事件处理
*/
public void actionPerformed(ActionEvent e) {
if (e.getSource() == previousButton) {
previousButtonActionPerformed();
} else if (e.getSource() == nextButton) {
nextButtonActionPerformed();
}
}
public static void main(String[] args) {
new MonthCalendar();
}
}
```
上述代码实现了一个基本的月历,包括月份标签、日历面板、上一个月按钮、下一个月按钮等组件。通过`updateCalendar()`方法可以更新日历面板,通过`previousButtonActionPerformed()`和`nextButtonActionPerformed()`方法可以切换月份,通过`DateActionListener`类可以处理日期按钮的事件。你可以根据自己的需求进行修改和扩展。
据如下图,综合运用GUI编程、事件处理、Calendar类应用等知识设计 一款月历,要求能通过输入(或选择)年月的方式正确显示当前月份的所有日期。
以下是一个简单的Java月历程序,使用了Swing GUI库、ActionListener接口和Calendar类来实现。该程序可以根据用户输入的年份和月份生成并显示月历。
```java
import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Calendar;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class CalendarApp implements ActionListener {
private JFrame frame;
private JPanel monthPanel, yearPanel, datePanel;
private JLabel monthLabel, yearLabel;
private JComboBox<String> monthBox, yearBox;
private JButton updateButton;
public CalendarApp() {
// 创建主窗口
frame = new JFrame("月历");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(300, 300);
// 创建月份选择面板
monthPanel = new JPanel();
monthLabel = new JLabel("月份:");
monthBox = new JComboBox<String>();
for(int i = 1; i <= 12; i++) {
monthBox.addItem(String.valueOf(i));
}
monthPanel.add(monthLabel);
monthPanel.add(monthBox);
// 创建年份选择面板
yearPanel = new JPanel();
yearLabel = new JLabel("年份:");
yearBox = new JComboBox<String>();
for(int i = 1900; i <= 2100; i++) {
yearBox.addItem(String.valueOf(i));
}
yearPanel.add(yearLabel);
yearPanel.add(yearBox);
// 创建日期显示面板
datePanel = new JPanel(new GridLayout(7, 7));
updateCalendar(Calendar.getInstance());
// 创建更新按钮
updateButton = new JButton("更新");
updateButton.addActionListener(this);
// 将所有面板添加到主窗口中
frame.add(monthPanel, BorderLayout.NORTH);
frame.add(yearPanel, BorderLayout.CENTER);
frame.add(datePanel, BorderLayout.SOUTH);
frame.add(updateButton, BorderLayout.EAST);
// 显示主窗口
frame.setVisible(true);
}
// 更新月历
private void updateCalendar(Calendar cal) {
datePanel.removeAll();
// 设置日期为当月1号
cal.set(Calendar.DAY_OF_MONTH, 1);
// 获取当月第一天是星期几
int firstDayOfWeek = cal.get(Calendar.DAY_OF_WEEK);
// 添加星期标签
String[] weekDays = {"日", "一", "二", "三", "四", "五", "六"};
for(int i = 0; i < weekDays.length; i++) {
datePanel.add(new JLabel(weekDays[i], JLabel.CENTER));
}
// 添加日期
for(int i = 1; i < firstDayOfWeek; i++) {
datePanel.add(new JLabel(""));
}
int daysInMonth = cal.getActualMaximum(Calendar.DAY_OF_MONTH);
for(int i = 1; i <= daysInMonth; i++) {
datePanel.add(new JLabel(String.valueOf(i), JLabel.CENTER));
}
frame.validate();
}
// 处理更新按钮事件
public void actionPerformed(ActionEvent e) {
if(e.getSource() == updateButton) {
int year = Integer.valueOf((String) yearBox.getSelectedItem());
int month = Integer.valueOf((String) monthBox.getSelectedItem()) - 1;
Calendar cal = Calendar.getInstance();
cal.set(year, month, 1);
updateCalendar(cal);
}
}
public static void main(String[] args) {
new CalendarApp();
}
}
```
该程序包含三个面板:月份选择面板、年份选择面板和日期显示面板。月份和年份可以通过下拉框进行选择,日期显示面板根据用户选择的年份和月份显示当前月份的所有日期。用户可以点击“更新”按钮来更新月历。
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