这是一个用Java写的时钟
运行效果如下图：

代码如下：

import java.awt.*;
import java.uti1655648?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvcXFfMzU1NTA0NDM=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast)![这里写图片描述](http://img.blog.csdn.net/2016120721l.*;
import javax.swing.*;
import java.text.SimpleDateFormat;

/**
 * @author 行者無疆
 *
 */
public class Clock extends JApplet implements Runnable {
    private Thread timer = null;
    private int lastXh, lastYh, lastXm, lastYm, lastXs, lastYs;
    private SimpleDateFormat sdf;
    private NewPanel panel = new NewPanel();

    public void init() {
        lastXh = lastYh = lastXm = lastYm = lastXs = lastYs = 0;
        setBackground(Color.WHITE);
        add(panel);
        sdf = new SimpleDateFormat("yyyy 年 MM 月 dd 日 a hh 时 mm 分 ss 秒 EEEEE");

    }

    private class NewPanel extends JPanel {
        public void paintComponent(Graphics g) {
            super.paintComponent(g);
            int xh, yh, xm, ym, xs, ys, s, m, h, xCenter, yCenter;
            Calendar cal = Calendar.getInstance();
            Date sdate = new Date();
            String today = sdf.format(sdate);
            cal.setTime(sdate);
            s = cal.get(Calendar.SECOND);
            m = cal.get(Calendar.MINUTE);
            h = cal.get(Calendar.HOUR);
            xCenter = getWidth() / 2;
            yCenter = 80;
            xs = (int) (Math.cos(s * Math.PI / 30 - Math.PI / 2) * 45 + xCenter);
            ys = (int) (Math.sin(s * Math.PI / 30 - Math.PI / 2) * 45 + yCenter);
            xm = (int) (Math.cos(m * Math.PI / 30 - Math.PI / 2) * 40 + xCenter);
            ym = (int) (Math.sin(m * Math.PI / 30 - Math.PI / 2) * 40 + yCenter);
            xh = (int) (Math.cos((h * 30 + m / 2) * Math.PI / 180 - Math.PI / 2) * 30 + xCenter);
            yh = (int) (Math.sin((h * 30 + m / 2) * Math.PI / 180 - Math.PI / 2) * 30 + yCenter);

            g.setFont(new Font("TimesRoman", Font.PLAIN, 14));
            g.setColor(Color.blue);
            g.drawOval(xCenter - 52, yCenter - 52, 104, 104);
            g.setColor(Color.DARK_GRAY);
            g.drawString("9", xCenter - 45, yCenter +5);
            g.drawString("3", xCenter + 40, yCenter + 3);
            g.drawString("12", xCenter - 7, yCenter - 37);
            g.drawString("6", xCenter - 4, yCenter + 45);
            g.setColor(getBackground());
            if (xs != lastXs || ys != lastYs) {
                g.fillOval(lastXs - 5, lastYs - 5, 10, 10);
                g.drawLine(xCenter, yCenter, lastXs, lastYs);
            }
            if (xm != lastXm || ym != lastYm) {
                g.drawLine(xCenter, yCenter - 1, lastXm, lastYm);
                g.drawLine(xCenter - 1, yCenter, lastXm, lastYm);
            }
            if (xh != lastXh || yh != lastYh) {
                g.drawLine(xCenter, yCenter - 1, lastXh, lastYh);
                g.drawLine(xCenter - 1, yCenter, lastXh, lastYh);
            }
            g.setColor(Color.DARK_GRAY);
            g.drawString(today, 30, 180);
            g.setColor(Color.red);
            g.fillOval(xs - 5, ys - 5, 10, 10);
            g.drawLine(xCenter, yCenter - 1, xm, ym);
            g.drawLine(xCenter - 1, yCenter, xm, ym);
            g.drawLine(xCenter, yCenter - 1, xh, yh);
            g.drawLine(xCenter - 1, yCenter, xh, yh);
            lastXs = xs;
            lastYs = ys;
            lastXm = xm;
            lastYm = ym;
            lastXh = xh;
            lastYh = yh;

        }
    }

    public void start()
    {
        if(timer ==null)
        {
            timer  =new Thread(this);
            timer.start();
        }
    }

    public void stop() {
        if (timer != null) {
            timer.interrupt();
            timer = null;
        }
    }

    public void run() {
        while (timer != null) {
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
            }
            repaint();
        }
    }

}

HTML如下：

<html>

<applet code="Clock.class" width=350 height=200> </applet>

</html>

JavaappletClock

欢迎留言交流

猜你喜欢

Java__applet__Clock

欢迎留言交流

猜你喜欢

JavaappletClock