日历控件程序，也许有用。
1 //////////////////////////////////////////////////////////////////////////////////
2 //
3 // 描述: 实现了日历空间
4 //
5 // 时间：2006-10
6 //
7 // 作者: JAVA&HE
8 //
9 ////////////////////////////////////////////////////////////////////////////////
10
11 import javax.swing.*;
12 import java.awt.*;
13 import java.awt.event.*;
14 import java.text.*;
15 import java.util.*;
16
17 class Clock extends Canvas implements Runnable
18 {
19 TestClock mf;
20 Thread t;
21 String time;
22 Clock (TestClock mf)
23 {
24 this.mf=mf;
25 setSize (400,40);
26 setBackground (Color.white);
27 t=new Thread (this); //实例化线程
28 t.start (); //调用线程
29 }
30 public void run ()
31 {
32 while(true)
33 {
34 try
35 {
36 t.sleep (1000); //休眠1秒钟
37 }
38 catch(InterruptedException e)
39 {
40 System.out.println ("异常");
41 }
42 this.repaint (100);
43 }
44 }
45 public void paint (Graphics g)
46 {
47 Font f=new Font ("宋体",Font.BOLD,16);
48 SimpleDateFormat SDF=new SimpleDateFormat ("yyyy'年'MM'月'dd'日'HH:mm:ss");//格式化时间显示类型
49 Calendar now=Calendar.getInstance ();
50 time=SDF.format (now.getTime ()); //得到当前日期和时间
51 g.setFont (f);
52 g.setColor (Color.orange);
53 g.drawString (time,100,25);
54 }
55 }
56 class TestClock extends JFrame
57 {
58 JPanel panel=new JPanel (new BorderLayout ());
59 JPanel panel1=new JPanel ();
60 JPanel panel2=new JPanel (new GridLayout (7,7));
61 JPanel panel3=new JPanel ();
62 JLabel []label=new JLabel[49];
63 JLabel y_label=new JLabel ("年份");
64 JLabel m_label=new JLabel ("月份");
65 JComboBox com1=new JComboBox ();
66 JComboBox com2=new JComboBox ();
67 JButton button=new JButton ("查看");
68 int re_year,re_month;
69 int x_size,y_size;
70 String year_num;
71 Calendar now=Calendar.getInstance (); //实例化Calendar
72 TestClock ()
73 {
74 super ("万年历");
75 setSize (300,350);
76 x_size=(int)(Toolkit.getDefaultToolkit ().getScreenSize ().getWidth ());
77 y_size=(int)(Toolkit.getDefaultToolkit ().getScreenSize ().getHeight ());
78 setLocation ((x_size-300)/2,(y_size-350)/2);
79 setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
80 panel1.add (y_label);
81 panel1.add (com1);
82 panel1.add (m_label);
83 panel1.add (com2);
84 panel1.add (button);
85 for(int i=0;i<49;i++)
86 {
87 label[i]=new JLabel ("",JLabel.CENTER);//将显示的字符设置为居中
88 panel2.add (label[i]);
89 }
90 panel3.add (new Clock (this));
91 panel.add (panel1,BorderLayout.NORTH);
92 panel.add (panel2,BorderLayout.CENTER);
93 panel.add (panel3,BorderLayout.SOUTH);
94 panel.setBackground (Color.white);
95 panel1.setBackground (Color.white);
96 panel2.setBackground (Color.white);
97 panel3.setBackground (Color.white);
98 Init ();
99 button.addActionListener (new ActionListener ()
100 {
101 public void actionPerformed (ActionEvent e)
102 {
103 int c_year,c_month,c_week;
104 c_year=Integer.parseInt (com1.getSelectedItem ().toString ()); //得到当前所选年份
105 c_month=Integer.parseInt (com2.getSelectedItem ().toString ())-1; //得到当前月份，并减1,计算机中的月为0－11
106 c_week=use (c_year,c_month); //调用函数use，得到星期几
107 Resetday (c_week,c_year,c_month); //调用函数Resetday
108 }});
109 setContentPane (panel);
110 setVisible (true);
111 setResizable (false);
112 }
113 public void Init ()
114 {
115 int year,month_num,first_day_num;
116 String log[]={"日","一","二","三","四","五","六"};
117 for(int i=0;i<7;i++)
118 {
119 label[i].setText (log[i]);
120 }
121 for(int i=0;i<49;i=i+7)
122 {
123 label[i].setForeground (Color.red); //将星期日的日期设置为红色
124 }
125 for(int i=6;i<49;i=i+7)
126 {
127 label[i].setForeground (Color.green);//将星期六的日期设置为绿色
128 }
129 for(int i=1;i<10000;i++)
130 {
131 com1.addItem (""+i);
132 }
133 for(int i=1;i<13;i++)
134 {
135 com2.addItem (""+i);
136 }
137 month_num=(int)(now.get (Calendar.MONTH)); //得到当前时间的月份
138 year=(int)(now.get (Calendar.YEAR)); //得到当前时间的年份
139 com1.setSelectedIndex (year-1); //设置下拉列表显示为当前年
140 com2.setSelectedIndex (month_num); //设置下拉列表显示为当前月
141 first_day_num=use (year,month_num);
142 Resetday (first_day_num,year,month_num);
143 }
144 public int use (int reyear,int remonth)
145 {
146 int week_num;
147 now.set (reyear,remonth,1); //设置时间为所要查询的年月的第一天
148 week_num= (int)(now.get (Calendar.DAY_OF_WEEK));//得到第一天的星期
149 return week_num;
150 }
151 public void Resetday (int week_log,int year_log,int month_log)
152 {
153 int month_score_log; //判断是否是闰年的标记
154 int month_day_score; //存储月份的天数
155 int count;
156 month_score_log=0;
157 month_day_score=0;
158 count=1;
159 if(year_log%4==0&&year_log%100!=0||year_log%400==0)
160 {//判断是否为闰年
161 month_score_log=1;
162 }
163 month_log=month_log+1; //将传来的月份数加1
164 switch(month_log)
165 {
166 case 1:
167 case 3:
168 case 5:
169 case 7:
170 case 8:
171 case 10:
172 case 12:
173 month_day_score=31;
174 break;
175 case 4:
176 case 6:
177 case 9:
178 case 11:
179 month_day_score=30;
180 break;
181 case 2:
182 if(month_score_log==1)
183 {
184 month_day_score=29;
185 }
186 else
187 {
188 month_day_score=28;
189 }
190 break;
191 }
192 for(int i=7;i<49;i++)
193 { //初始化标签
194 label[i].setText ("");
195 }
196 week_log=week_log+6; //将星期数加6，使显示正确
197 month_day_score=month_day_score+week_log;
198 for(int i=week_log;i<month_day_score;i++,count++)
199 {
200 label[i].setText (count+"");
201 }
202 }
203 public static void main (String [] args)
204 {
205 JFrame.setDefaultLookAndFeelDecorated (true);
206 TestClock start=new TestClock ();
207 }
208 }
209
posted on 2007-02-07 09:26
-274°C 阅读(1085)
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