Java: I hope you wake up every day is not alarm clock but dream!

Java: I hope you wake up every day is not alarm clock but dream!

Code design

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(Microsoft Yahei,Font.PLAIN,15);
    private Font f2 = new Font(Microsoft Yahei,Font.BOLD,15);
    private JLabel l = new JLabel("Current time:");
    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(a){        
        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;
        // Anti-aliasing switch on
        g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        
        / / draw the dial
        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);
        
        // Draw 60 points
        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)// draw 3,6,9,12 big dots
            {
                g.fillOval((int)(x - 5 + 200), (int)(y - 5 + 165),10.10);
            }
            else// Other small points
            {
                g.fillOval((int)(x - 2.5 + 200), (int)(y - 2.5 + 165),3.3); }}// Draw four numbers
        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);
        
        // Draw the hour hand, minute hand, second hand
        paint_HourPointer(hour*3600 + min*60 + sec,g);// The number of seconds passed by the hour hand
        paint_MinutePointer(min*60 + sec,g);// The number of seconds passed by the minute hand
        paint_SecondPointer(sec,g);// The number of seconds elapsed by the second hand
    }
    
    public void showUI(a){
        new Thread() {
            @SuppressWarnings("deprecation")
            public void run(a) {
                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 Indicates how many seconds the current clock moves relative to 00:00:00
        double x,y,angle; 
        angle = second * PI / 21600;// The speed of the hour hand is 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 Indicates the number of seconds that the minute hand of the current time moves relative to 00:00:00
        double x,y,angle;
        angle = second * PI / 1800;// The speed of minute hand is 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 Indicates how many seconds the second hand of the current time moves relative to 00:00:00
        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;// The speed of the hour hand is 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);/ / the abscissa
        co[1] = 115 * Math.sin(angle);/ / ordinate
        return co;
    }
    
    @SuppressWarnings("deprecation")
    private void showTime(a){
        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;
        // Set the display time on the form
        date = "" + (now.getYear()+1900) + "Year" + (now.getMonth()+1) + "Month" + now.getDate() + "Day" + "Week" ;
        switch (now.getDay()) {
        case 1:
            date += "一";
            break;
        case 2:
            date += "二";
            break;
        case 3:
            date += "Three";
            break;
        case 4:
            date += "Four";
            break;
        case 5:
            date += "Five";
            break;
        case 6:
            date += "Six";
            break;
        case 7:
            date += "Day";
            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("The image/logo small JPG".);// Window icon
        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); }}Copy the code