Java代码实现:
package woxiang.test;
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("微软雅黑", Font.PLAIN, 15);
private Font f2 = new Font("微软雅黑", Font.BOLD, 15);
private JLabel l = new JLabel("当前时间:");
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;
//反锯齿开关开
g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
//画表盘
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);
//画60个点
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)//画3,6,9,12四个大点
{
g.fillOval((int) (x - 5 + 200), (int) (y - 5 + 165), 10, 10);
} else//其他小点
{
g.fillOval((int) (x - 2.5 + 200), (int) (y - 2.5 + 165), 3, 3);
}
}
//画四个数字
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);
//画时针,分针,秒针
paint_HourPointer(hour * 3600 + min * 60 + sec, g);//时针走过的秒数
paint_MinutePointer(min * 60 + sec, g);//分针走过的秒数
paint_SecondPointer(sec, g);//秒针走过的秒数
}
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表示当前时间的时针相对00:00:00走了多少秒
double x, y, angle;
angle = second * PI / 21600;//时针的速度为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表示当前时间的分针相对00:00:00走了多少秒
double x, y, angle;
angle = second * PI / 1800;//分针的速度为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));
g.drawLine(200, 165, (int) x, (int) y);
}
public void paint_SecondPointer(int second, Graphics2D g) {//second表示当前时间的秒针相对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;//时针的速度为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);//横座标
co[1] = 115 * Math.sin(angle);//纵座标
return co;
}
@SuppressWarnings("deprecation")
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 + ":";
else
strTime = strTime + "" + min_temp + ":";
if (sec < 10)
strTime = strTime + "0" + sec_temp;
else
strTime = strTime + "" + sec_temp;
//在窗体上设置显示时间
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";
break;
case 3:
date += "三";
break;
case 4:
date += "四";
break;
case 5:
date += "五";
break;
case 6:
date += "六";
break;
case 7:
date += "日";
break;
}
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");//窗口图标
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);
}
}