一个可以显示2002年日历的代码程序

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//========================MyCalendar.java===================== // Topic : Calendar // Author: Dy1978 // Date : 2002-1-31 // Remark: //============================================================ import java.awt.*; import java.awt.event.*; import javax.swing.*; //import MyWindowListener; public class MyCalendar extends JFrame implements ItemListener { private Container c; private JPanel j_MyPanel=new JPanel(); private JLabel arr_DateLabel[] = new JLabel[49]; private 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"}; private JComboBox comboBox = new JComboBox (months); private int i_Days = 31; private int i_Week = 2; private int i_Month = 1; private String s_Week = null; // Construct Method public MyCalendar() { super("日历"); c = getContentPane(); c.setLayout(new BorderLayout()); // Add comboBox comboBox.setMaximumRowCount(6); //*************************** //next sentence unknow before //*************************** comboBox.addItemListener(this); c.add(comboBox,BorderLayout.NORTH); // Add j_MyPanel j_MyPanel.setLayout(new GridLayout(7,7)); setCanlendar(i_Days,i_Week); c.add(j_MyPanel,BorderLayout.CENTER); setSize(600,400); show(); } // Method of Set Date Label of Calendar public JLabel setDateLabel(int i_Date) { arr_DateLabel[i_Date]=new JLabel(); arr_DateLabel[i_Date].setName("JLabel" String.valueOf(i_Date)); arr_DateLabel[i_Date].setText(String.valueOf(i_Date-i_Week-6)); arr_DateLabel[i_Date].setHorizontalAlignment(0); return arr_DateLabel[i_Date]; } // Method of Set Space Label of Calendar public JLabel setSpaceLabel(int i_beginWeek) { arr_DateLabel[i_beginWeek]=new JLabel(); arr_DateLabel[i_beginWeek].setName("JLabel" String.valueOf(i_beginWeek)); arr_DateLabel[i_beginWeek].setText(""); arr_DateLabel[i_beginWeek].setHorizontalAlignment(0); return arr_DateLabel[i_beginWeek]; } // Method of Set Title of Calendar public JLabel setTitleLabel(int i_titleWeek) { switch (i_titleWeek) { case 0: s_Week = "日"; break; case 1: s_Week = "一"; break; case 2: s_Week = "二"; break; case 3: s_Week = "三"; break; case 4: s_Week = "四"; break; case 5: s_Week = "五"; break; case 6: s_Week = "六"; break; } arr_DateLabel[i_titleWeek]=new JLabel(); arr_DateLabel[i_titleWeek].setName("JLabelw" String.valueOf(i_titleWeek)); arr_DateLabel[i_titleWeek].setText(s_Week); arr_DateLabel[i_titleWeek].setForeground(Color.red); arr_DateLabel[i_titleWeek].setHorizontalAlignment(0); return arr_DateLabel[i_titleWeek]; } // Method of Set Calendar : Add Label to j_MyPanel public void setCanlendar(int days,int week) { for (int a=0;a<7;a ) { j_MyPanel.add(setTitleLabel(a),setTitleLabel(a).getName()); } for (int i=0 7;i<i_Week 7;i ) { j_MyPanel.add(setSpaceLabel(i),setSpaceLabel(i).getName()); } for (int l=week 7;l<days week 7;l ) { j_MyPanel.add(setDateLabel(l),setDateLabel(l).getName()); } for (int k=days week 7;k<49;k ) { j_MyPanel.add(setSpaceLabel(k),setSpaceLabel(k).getName()); } } //ItemStateChanged Method : Date of Calendar Changed With Selected Month public void itemStateChanged(ItemEvent e) { //*************************** //next sentence unknow before //*************************** i_Month=comboBox.getSelectedIndex() 1; switch (i_Month) { case 1: i_Days = 31; i_Week = 2; break; case 2: i_Days = 28; i_Week = 5; break; case 3: i_Days = 31; i_Week = 5; break; case 4: i_Days = 30; i_Week = 1; break; case 5: i_Days = 31; i_Week = 3; break; case 6: i_Days = 30; i_Week = 6; break; case 7: i_Days = 31; i_Week = 1; break; case 8: i_Days = 31; i_Week = 4; break; case 9: i_Days = 30; i_Week = 0; break; case 10: i_Days = 31; i_Week = 2; break; case 11: i_Days = 30; i_Week = 5; break; case 12: i_Days = 31; i_Week = 0; break; } //*************************** //next sentence unknow before //*************************** j_MyPanel.removeAll(); setCanlendar(i_Days,i_Week); show(); //necessary! } //Main Method public static void main(String args[]) { MyCalendar app = new MyCalendar(); //app.addWindowListener(new MyWindowListener()); } }