HOW TO CREATE ANALOG CLOCK IN JAVA

Hello guys!

Today we are creating a clock with using java program. We are using some packages like SimpleDateFormat. And also we are using the variables for coordinate x and y to declare center coordinate of a clock, second, minute and hour.

import java.awt.Color;

import java.awt.Font;

import java.awt.Graphics;

import java.text.SimpleDateFormat;

import java.util.Date;

import java.util.Locale;

import javax.swing.JFrame;

import javax.swing.JPanel;

public class ClockEx extends JPanel implements Runnable

{

Thread thread = null;

SimpleDateFormat formatter = new SimpleDateFormat("s", Locale.getDefault());

Date currentDate;

//declareing the variables for coordinates and x_sec,x_min,x_hw,y_sec,y_min, and y_hw  defining the //end coordinate of the minutes and hours.

int x = 175, y = 175, x_sec = 0, y_sec = 0, x_min = 0, y_min = 0, x_hw = 0,y_hw= 0;

private void drawStructure(Graphics gr)

{

gr.setFont(new Font("TimesRoman", Font.BOLD, 20));

gr.setColor(Color.yellow);

gr.fillOval(x - 150, y - 150, 300, 300);

gr.setColor(Color.gray);

gr.drawString("JAYANT" ,130, 60);

gr.setColor(Color.blue);

gr.drawString("9", x - 145, y +0); // difining the

gr.drawString("3", x + 135, y + 0);

gr.drawString("12", x - 10, y - 130);

gr.drawString("6", x - 10, y + 145);

}

public void paint(Graphics gr1) {

int xhour, yhour, xminute, yminute, xsecond, ysecond, second, minute, hour;drawStructure

(gr1);

currentDate = new Date();

formatter.applyPattern("s");

second = Integer.parseInt(formatter.format(currentDate));

formatter.applyPattern("m");

minute = Integer.parseInt(formatter.format(currentDate));

formatter.applyPattern("h");

hour = Integer.parseInt(formatter.format(currentDate));

xsecond = (int) (Math.cos(second * 3.14f / 30 - 3.14f / 2) * 120 + x);

ysecond = (int) (Math.sin(second * 3.14f / 30 - 3.14f / 2) * 120 + y);

xminute = (int) (Math.cos(minute * 3.14f / 30 - 3.14f / 2) * 100 + x);

yminute = (int) (Math.sin(minute * 3.14f / 30 - 3.14f / 2) * 100 + y);

xhour = (int) (Math.cos((hour * 30 + minute / 2) * 3.14f / 180 - 3.14f / 2) * 80 + x);

yhour = (int) (Math.sin((hour * 30 + minute / 2) * 3.14f / 180 - 3.14f / 2) * 80 + y);

// Erase if necessary, and redraw

gr1.setColor(Color.pink);

if (xsecond != x_sec || ysecond != y_sec)

{

gr1.drawLine(x, y,x_sec, y_sec);

}

if (xminute != x_min || yminute != y_min)

{

gr1.drawLine(x , y  - 1, x_min, y_min);

gr1.drawLine(x  - 1, y , x_min, y_min);

}

if (xhour != x_hw || yhour != y_hw)

{

gr1.drawLine(x , y  - 1, x_hw, y_hw);

gr1.drawLine(x  - 1, y , x_hw, y_hw);

}

gr1.setColor(Color.pink);

gr1.drawLine(x , y , xsecond, ysecond);

gr1.setColor(Color.red);

gr1.drawLine(x , y  - 1, xminute, yminute);

gr1.drawLine(x  - 1, y , xminute, yminute);

gr1.setColor(Color.green);

gr1.drawLine(x , y  - 1, xhour, yhour);

gr1.drawLine(x  - 1, y , xhour, yhour);

 x_sec = xsecond;

y_sec = ysecond;

x_min = xminute;

y_min = yminute;

x_hw = xhour;

 y_hw = yhour;

}

  public void start() {

    if (thread == null) {

      thread = new Thread(this);

      thread.start();

    }

  }

  public void stop()

{

thread = null;

}

  public void run() {

     while (thread != null) {

      try {

        Thread.sleep(100);

      } catch (InterruptedException e) {

      }

      repaint();

    }

    thread = null;

  }

  public void update(Graphics g) {

    paint(g);

  }

  public static void main(String args[]) {

     JFrame window = new JFrame();

      Color c=new Color(118,73,190);

      window.setBackground(c);

      window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

      window.setBounds(0, 0, 400, 400);

      ClockEx clock = new ClockEx();

      window.getContentPane().add(clock);

      window.setVisible(true);

      clock.start();

   }

}

OUTPUT :