public class CalendarBean { String day[]; int year = 2005, month = 0; public String[] getCalendar() { String a[] = new String[42]; // 获取日历的实例对象 Calendar date = Calendar.getInstance(); // 设置日历日期 date.set(this.year, this.month - 1, 1); // 获取周数 int week = date.get(Calendar.DAY_OF_WEEK); int day = 0; // 判断大月份 if (this.month == 1 || this.month == 3 || this.month == 5 || this.month == 7 || this.month == 8 || this.month == 10 || this.month == 12) { day = 31; } // 判断小月 if (this.month == 4 || this.month == 6 || this.month == 9 || this.month == 11) { day = 30; } // 单独判断2月 if (this.month == 2) { // 判断是闰年 能被4或400整除 但不能被100整除 if ((this.year % 4 == 0) || (this.year % 100 != 0) || (this.year % 400 == 0)) { day = 29; } else { day = 28; } } for (int i = week, n = 1; i < week + day; i++) { a[i] = String.valueOf(n); n++; } return a; } public int getMonth() { return this.month; } public int getYear() { return this.year; } public void setMonth(int month) { this.month = month; } public void setYear(int year) { this.year = year; }}
package com.sunshine.framework.calendar;import java.awt.BorderLayout;import java.awt.GridLayout;import java.awt.ScrollPane;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JPanel;import javax.swing.JTextField;import com.sunshine.framework.calendar.model.CalendarBean;/** * * <p> * 描述该类情况 {@link 代表跟谁有关系} * </p> * * @author 王超 * @since 1.0 * @date 2016年10月20日 下午8:41:58 * @see 新建|修改|放弃 * @see com.sunshine.framework.calendar.CalendarFrame */public class CalendarFrame extends JFrame implements ActionListener { /***/ private static final long serialVersionUID = 1L; JButton button = new JButton(); CalendarBean calendar; JLabel labelDay[] = new JLabel[42]; JLabel lbl1 = new JLabel("请输入年份："); JLabel lbl2 = new JLabel(""); String name[] = { "日", "一", "二", "三", "四", "五", "六" }; JButton nextMonth, previousMonth; JLabel showMessage = new JLabel("", JLabel.CENTER); JTextField text = new JTextField(10); JButton titleName[] = new JButton[7]; int year = 1996, month = 1; public CalendarFrame() { JPanel pCenter = new JPanel(); // 将pCenter的布局设置为7行7列的GridLayout布局 pCenter.setLayout(new GridLayout(7, 7)); // pCenter添加组件titleName[i] for (int i = 0; i < 7; i++) { // 把星期值存入到titleName数组里 this.titleName[i] = new JButton(this.name[i]); } // pCenter添加组件labelDay[i] for (int i = 0; i < 42; i++) { this.labelDay[i] = new JLabel("", JLabel.CENTER); pCenter.add(this.labelDay[i]); } this.text.addActionListener(this); this.calendar = new CalendarBean(); this.calendar.setYear(this.year); this.calendar.setMonth(this.month); String day[] = this.calendar.getCalendar(); for (int i = 0; i < 42; i++) { this.labelDay[i].setText(day[i]); } this.nextMonth = new JButton("下月"); this.previousMonth = new JButton("上月"); this.button = new JButton("确定"); // 注册监听器 this.nextMonth.addActionListener(this); this.previousMonth.addActionListener(this); this.button.addActionListener(this); JPanel pNorth = new JPanel(), pSouth = new JPanel(); pNorth.add(this.showMessage); pNorth.add(this.lbl2); pNorth.add(this.previousMonth); pNorth.add(this.nextMonth); pNorth.add(this.lbl1); pNorth.add(this.text); pNorth.add(this.button); this.showMessage.setText("日历：" + this.calendar.getYear() + "年" + this.calendar.getMonth() + "月"); ScrollPane scrollPane = new ScrollPane(); scrollPane.add(pCenter); // 窗口添加scrollPane在中心区域 add(scrollPane, BorderLayout.CENTER); // 窗口添加pNorth 在北面区域 add(pNorth, BorderLayout.NORTH); // 窗口添加pSouth 在南区域。 add(pSouth, BorderLayout.SOUTH); } /* * (方法重写) * * @see * java.awt.event.ActionListener#actionPerformed(java.awt.event.ActionEvent) */ @Override public void actionPerformed(ActionEvent e) { if (e.getSource() == this.nextMonth) { this.month = this.month + 1; if (this.month > 12) { this.month = 1; } this.calendar.setMonth(this.month); String day[] = this.calendar.getCalendar(); for (int i = 0; i < 42; i++) { this.labelDay[i].setText(day[i]); } } else if (e.getSource() == this.previousMonth) { this.month = this.month - 1; if (this.month < 1) { this.month = 12; } this.calendar.setMonth(this.month); String day[] = this.calendar.getCalendar(); for (int i = 0; i < 42; i++) { this.labelDay[i].setText(day[i]); } } else { this.month = this.month + 1; if (this.month > 12) { this.month = 1; } this.calendar.setYear(Integer.parseInt(this.text.getText())); String day[] = this.calendar.getCalendar(); for (int i = 0; i < 42; i++) { this.labelDay[i].setText(day[i]); } } this.showMessage.setText("日历：" + this.calendar.getYear() + "年" + this.calendar.getMonth() + "月"); }}
package com.sunshine.framework.calendar;import javax.swing.JFrame;import javax.swing.UIManager;/** * * <p> * 描述该类情况 {@link 代表跟谁有关系} * </p> * * @author 王超 * @since 1.0 * @date 2016年10月20日 下午9:34:15 * @see 新建|修改|放弃 * @see com.sunshine.framework.calendar.CalendarMain */public class CalendarMain { public static void main(String[] args) { try { UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel"); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } CalendarFrame frame = new CalendarFrame(); frame.setBounds(100, 100, 360, 300); frame.setTitle("日历小程序"); // 窗体居中显示 frame.setLocationRelativeTo(null); frame.setVisible(true); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); }}