代碼設計
import java.awt.*;
import java.util.Date;
import javax.swing.*;
public class Clock extends JComponent{
/**
*
*/
private static final long serialVersionUID = -5379472973578609775L;
private Font f = new Font("微軟雅黑",Font.PLAIN,15);
private Font f2 = new Font("微軟雅黑",Font.BOLD,15);
private JLabel l = new JLabel("目前時間：");
private JLabel display = new JLabel();
private JLabel display2 = new JLabel("");
private int hour = 0;
private int min = 0;
private int sec = 0;
private Date now = new Date();
private Graphics2D g;
final double PI = Math.PI;
private String strTime = "" ;
@SuppressWarnings("deprecation")
public Clock(){
add(l);
l.setBounds(120, 320, 80, 20);
l.setFont(f);
add(display);
display.setBounds(195, 320, 80, 20);
display.setFont(f);
display.setBorder(BorderFactory.createLineBorder(Color.black));
add(display2);
display2.setBounds(90, 350, 250, 20);
display2.setFont(f);
hour = now.getHours();
min = now.getMinutes();
sec = now.getSeconds();
setVisible(true);
}
public void paintComponent(Graphics g1){
double x,y;
super.paintComponent(g1);
g = (Graphics2D) g1;
//反鋸齒開關開
g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
//畫表盤
g.setPaint(new GradientPaint(5,40,Color.red,15,50,Color.yellow,true));
g.setStroke( new BasicStroke(3,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL));
g.drawOval(75, 40, 250, 250);
g.fillOval(195, 160, 10, 10);
g.setColor(Color.black);
//畫60個點
for(int i = 0;i < 60;i++)
{
double[] co = new double[2];
co = paint_Dot(i * 2 * PI / 60);
x = co[0];
y = co[1];
if(i == 0 || i == 15 || i == 30 || i == 45)//畫3,6,9,12四個大點
{
g.fillOval((int)(x - 5 + 200),(int)(y - 5 + 165),10,10);
}
else//其他小點
g.fillOval((int)(x - 2.5 + 200),(int)(y - 2.5 + 165),3,3);
}
//畫四個數字
g.setFont(f2);
g.drawString("3", 300, 171);
g.drawString("6", 195, 273);
g.drawString("9", 91, 171);
g.drawString("12", 195, 68); //g.drawString("12", 190, 68);
//畫時針，分針，秒針
paint_HourPointer(hour*3600 + min*60 + sec,g);//時針走過的秒數
paint_MinutePointer(min*60 + sec,g);//分針走過的秒數
paint_SecondPointer(sec,g);//秒針走過的秒數
public void showUI(){
new Thread() {
@SuppressWarnings("deprecation")
public void run() {
while (true)
{
now = new Date();
hour = now.getHours();
min = now.getMinutes();
sec = now.getSeconds();
try {
Thread.sleep(1000);
} catch (InterruptedException ex) {
ex.printStackTrace();
}
showTime();
repaint();
}
}.start();
public void paint_HourPointer(int second,Graphics2D g){//second表示目前時間的時針相對00:00:00走了多少秒
double x,y,angle;
angle = second * PI / 21600;//時針的速度為PI/21600 (rad/s)
x = 200 + 60 * Math.sin(angle);
y = 165 - 60 * Math.cos(angle);
g.setStroke( new BasicStroke(5,BasicStroke.CAP_BUTT,BasicStroke.JOIN_ROUND));
g.setPaint(new GradientPaint(200,165,Color.red,260,165,Color.blue,true));
g.drawLine(200, 165, (int)x, (int)y);
public void paint_MinutePointer(int second,Graphics2D g){//second表示目前時間的分針相對00:00:00走了多少秒
double x,y,angle;
angle = second * PI / 1800;//分針的速度為PI/1800 (rad/s)
x = 200 + 80 * Math.sin(angle);
y = 165 - 80 * Math.cos(angle);
g.setStroke( new BasicStroke(3,BasicStroke.CAP_BUTT,BasicStroke.JOIN_ROUND));
g.setPaint(new GradientPaint(200,165,Color.magenta,280,165,Color.blue,true));
public void paint_SecondPointer(int second,Graphics2D g){//second表示目前時間的秒針相對00:00:00走了多少秒
double x,y,x1,y1,x2,y2,x3,y3,angle;
double cos = 90 / Math.sqrt(8125);//90*90+5*5
double sin = 5 / Math.sqrt(8125);
angle = second * PI / 30;//時針的速度為PI/30 (rad/s)
x = 200 + 95 * Math.sin(angle);
y = 165 - 95 * Math.cos(angle);
x1 = 200 + 20 * Math.sin(angle + PI);
y1 = 165 - 20 * Math.cos(angle + PI);
x2 = 200 + Math.sqrt(8125)* ( Math.sin(angle)*cos - Math.cos(angle)*sin ); //sin(a-b)
y2 = 165 - Math.sqrt(8125)* ( Math.cos(angle)*cos + Math.sin(angle)*sin ); //cos(a-b)
x3 = 200 + Math.sqrt(8125)* ( Math.sin(angle)*cos + Math.cos(angle)*sin ); //sin(a+b)
y3 = 165 - Math.sqrt(8125)* ( Math.cos(angle)*cos - Math.sin(angle)*sin ); //cos(a+b)
g.setStroke( new BasicStroke(2,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL));
g.setPaint(new GradientPaint(180,165,Color.CYAN,295,165,Color.MAGENTA,true));
g.drawLine((int)x1, (int)y1, (int)x, (int)y);
g.drawLine((int)x2, (int)y2, (int)x, (int)y);
g.drawLine((int)x3, (int)y3, (int)x, (int)y);
public double[] paint_Dot(double angle){
double[] co = new double[2];
co[0] = 115 * Math.cos(angle);//橫坐标
co[1] = 115 * Math.sin(angle);//縱坐标
return co;
private void showTime(){
String date;
int hour_temp = hour,min_temp = min,sec_temp = sec;
sec_temp += 1 ;
if(sec_temp >= 60)
sec_temp = 0;
min_temp += 1 ;
if(min_temp>=60){
min_temp=0;
hour_temp+=1;
if(hour_temp < 10)
strTime = "0" + hour_temp + ":";
else
strTime = "" + hour_temp + ":";
if(min_temp < 10)
strTime = strTime + "0" + min_temp + ":";
strTime = strTime + "" + min_temp + ":";
if(sec < 10)
strTime = strTime + "0" + sec_temp;
strTime = strTime + "" + sec_temp;
//在窗體上設定顯示時間
date = " " + (now.getYear()+1900) + "年" + (now.getMonth()+1) + "月" + now.getDate() + "日 " + "星期" ;
switch (now.getDay()) {
case 1:
date += "一";
break;
case 2:
date += "二";
case 3:
date += "三";
case 4:
date += "四";
case 5:
date += "五";
case 6:
date += "六";
case 7:
date += "日";
date += " CST"; //Chinese standard time
strTime = " " + strTime;
display.setText(strTime);
display2.setText(date);
public static void main(String args[]){
Clock c = new Clock();
c.showUI();
JFrame f = new JFrame("yunyaniu");
Image img=Toolkit.getDefaultToolkit().getImage("image/logo小.jpg");//視窗圖示
f.setIconImage(img);
f.setSize(400,420);
f.setResizable(false);
f.add(c, BorderLayout.CENTER);
f.setLocationRelativeTo(null);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setVisible(true);
}
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