Java：希望每天叫醒你的不是鬧鐘而是夢想！__Java

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);                //畫錶盤        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));        g.drawLine(200, 165, (int)x, (int)y);    }        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);//橫座標        co[1] = 115 * Math.sin(angle);//縱座標        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;        //在表單上設定顯示時間        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";            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");//視窗表徵圖        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);    }}