如下是运行图： /** * Clock.java * Summary 数字时间显示 * Created on 2005-8-14 * @author 高崑 * remark 如有改动请发一份代码给我，邮箱gkgklovelove@eyou.com */ package Clock; import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.text.*; import java.util.*;</td></tr> <tr> <td height="432" colspan="2">
class Clock extends Canvas implements Runnable{
MainFrame mf;
Thread t;
String time;
Clock(MainFrame mf){
this.mf=mf;
setSize(400,40);
setBackground(Color.white);
t=new Thread(this);//实例化线程
t.start();//调用线程
}
public void run(){
while(true){
try{
t.sleep(1000);//休眠1秒钟
}catch(InterruptedException e){
System.out.println("异常");
}
this.repaint(100);
}
}
public void paint(Graphics g){
Font f=new Font("宋体",Font.BOLD,16);
SimpleDateFormat SDF=new SimpleDateFormat("yyyy'年'MM'月'dd'日'HH:mm:ss");//格式化时间显示类型
Calendar now=Calendar.getInstance();
time=SDF.format(now.getTime());//得到当前日期和时间
g.setFont(f);
g.setColor(Color.orange);
g.drawString(time,100,25);
}
}
</td>
</tr>
</table>
/**
* MainFrame.java
* Summary 万年历主类
* Created on 2005-8-14
* @author 高崑
* remark 如有改动请发一份代码给我，邮箱gkgklovelove@eyou.com
*/
package Clock;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.text.*;
import java.util.*;
class MainFrame extends JFrame{
JPanel panel=new JPanel(new BorderLayout());
JPanel panel1=new JPanel();
JPanel panel2=new JPanel(new GridLayout(7,7));
JPanel panel3=new JPanel();
JLabel []label=new JLabel[49];
JLabel y_label=new JLabel("年份");
JLabel m_label=new JLabel("月份");
JComboBox com1=new JComboBox();
JComboBox com2=new JComboBox();
JButton button=new JButton("查看");
int re_year,re_month;
int x_size,y_size;
String year_num;
Calendar now=Calendar.getInstance();//实例化Calendar
MainFrame(){
super("万年历");
setSize(300,350);
x_size=(int)(Toolkit.getDefaultToolkit().getScreenSize().getWidth());
y_size=(int)(Toolkit.getDefaultToolkit().getScreenSize().getHeight());
setLocation((x_size-300)/2,(y_size-350)/2);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
panel1.add(y_label);
panel1.add(com1);
panel1.add(m_label);
panel1.add(com2);
panel1.add(button);
for(int i=0;i< 49;i++){
label[i]=new JLabel("",JLabel.CENTER);//将显示的字符设置为居中
panel2.add(label[i]);
}
panel3.add(new Clock(this));
panel.add(panel1,BorderLayout.NORTH);
panel.add(panel2,BorderLayout.CENTER);
panel.add(panel3,BorderLayout.SOUTH);
panel.setBackground(Color.white);
panel1.setBackground(Color.white);
panel2.setBackground(Color.white);
panel3.setBackground(Color.white);
Init();
button.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
int c_year,c_month,c_week;
c_year=Integer.parseInt(com1.getSelectedItem().toString());//得到当前所选年份
c_month=Integer.parseInt(com2.getSelectedItem().toString())-1;
c_week=use(c_year,c_month);//调用函数use，得到星期几
Resetday(c_week,c_year,c_month);//调用函数Resetday
}});
setContentPane(panel);
setVisible(true);
setResizable(false);
}
public void Init(){
int year,month_num,first_day_num;
String log[]={"日","一","二","三","四","五","六"};
for(int i=0;i< 7;i++){
label[i].setText(log[i]);
}
for(int i=0;i< 49;i=i+7){
label[i].setForeground(Color.red);//将星期日的日期设置为红色
}
for(int i=6;i< 49;i=i+7){
label[i].setForeground(Color.green);//将星期六的日期设置为绿色
}
for(int i=1;i< 10000;i++){
com1.addItem(""+i);
}
for(int i=1;i< 13;i++){
com2.addItem(""+i);
}
month_num=(int)(now.get(Calendar.MONTH));//得到当前时间的月份
year=(int)(now.get(Calendar.YEAR));//得到当前时间的年份
com1.setSelectedIndex(year-1);//设置下拉列表显示为当前年
com2.setSelectedIndex(month_num);//设置下拉列表显示为当前月
first_day_num=use(year,month_num);
Resetday(first_day_num,year,month_num);
}
public int use(int reyear,int remonth){
int week_num;
now.set(reyear,remonth,1);//设置时间为所要查询的年月的第一天
week_num= (int)(now.get(Calendar.DAY_OF_WEEK));//得到第一天的星期
return week_num;
}
public void Resetday(int week_log,int year_log,int month_log){
int month_score_log;//判断是否是闰年的标记
int month_day_score;//存储月份的天数
int count;
month_score_log=0;
month_day_score=0;
count=1;
if(year_log%4==0&&year_log%100!=0||year_log%400==0){//判断是否为闰年
month_score_log=1;
}
month_log=month_log+1;//将传来的月份数加1
switch(month_log){
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
month_day_score=31;
break;
case 4:
case 6:
case 9:
case 11:
month_day_score=30;
break;
case 2:
if(month_score_log==1){
month_day_score=29;
}
else{
month_day_score=28;
}
break;
}
for(int i=7;i< 49;i++){//初始化标签
label[i].setText("");
}
week_log=week_log+6;//将星期数加6，使显示正确
month_day_score=month_day_score+week_log;
for(int i=week_log;i< month_day_score;i++,count++){
label[i].setText(count+"");
}
}
public static void main(String [] args){
JFrame.setDefaultLookAndFeelDecorated(true);
MainFrame start=new MainFrame();
}
}
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