Hi,i have written an analog clock web applet, and it works fine. But the problem is that the hour hand and the minute hand have interchanged positions.So if the time is 5 'o' clock,it shows 12:25!!.i cant figure out where the problem is.please help.
here's the code for the clock:
CODE
import java.awt.*;
import java.util.*;
import java.awt.geom.*;
import java.applet.*;
public class Clock extends Applet implements Runnable {
final static int midX = 180;
final static int midY = 180;
final static int rad = 90;
Thread aclock = null;
ClockHand seconds, minutes, hours;
int sec, min, hr;
Font fnt;
boolean compulsoryRun = true;
Calendar time;
Calendar clocktime;
String Timestart;
String Timstart;
Date dat;
String da;
String date;
public void init() {
setBackground(Color.green);
setForeground(Color.gray);
clocktime = Calendar.getInstance();
time = Calendar.getInstance();
fnt = new Font("Arial", Font.BOLD, 24);
}
public void start() {
compulsoryRun = true;
aclock = new Thread(this);
seconds = new ClockHand(clocktime.get(Calendar.SECOND), rad - 15, 15, Color.black, 0);
minutes = new ClockHand(clocktime.get(Calendar.MINUTE), rad * 5 / 7, Color.red, 9);
hours = new ClockHand(clocktime.get(Calendar.HOUR_OF_DAY), rad - 15, 15, Color.blue, 14);
sec = time.get(Calendar.SECOND);
min = time.get(Calendar.MINUTE);
hr = time.get(Calendar.HOUR_OF_DAY);
hr = hr % 12;
dat = new Date();
da = new String();
date = new String();
da = dat.toString();
date = da.substring(0, 10);
aclock.start();
}
public void stop()
{
aclock = null;
compulsoryRun = false;
Timestart += "stopped";
Timstart += "stopped";
}
public void run()
{
repaint();
while (compulsoryRun)
{
repaint(midX - rad - 5, midY - rad - 5, midX + rad + 5, midY + rad + 5);
try
{
Thread.sleep(1000);
} catch (InterruptedException ex)
{
System.out.println("Exception raised is: " + ex);
}
sec++;
if (sec == 60)
{
sec = 0;
min++;
}
if (min == 60) {
min = 0;
hr++;
}
if (hr == 13) {
hr = 1;
Timstart = hr + ":" + min + ":" + sec;
}
seconds.value++;
if (seconds.value == 60) {
seconds.value = 0;
minutes.value++;
}
if (minutes.value == 60) {
minutes.value = 0;
hours.value++;
}
if (hours.value == 13) {
hours.value = 1;
Timestart = (int) hours.value + ":" + (int) minutes.value + ":" + (int) seconds.value;
}
}
}
private void assignAngles() {
seconds.ang = (seconds.value) * Math.PI / 30;
minutes.ang = (minutes.value) * Math.PI / 30 + (seconds.value) * Math.PI / 1800;
hours.ang = (hours.value) * Math.PI / 6 + (minutes.value) * Math.PI / 360;
}
public void paint(Graphics g) {
update(g);
}
public void update(Graphics g) {
Graphics2D g2d = (Graphics2D) g;
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON);
g.setColor(Color.yellow);
g.fillOval(midX - rad, midY - rad, 2 * rad, 2 * rad);
g.setColor(Color.black);
g.drawOval(midX - rad, midY - rad, 2 * rad, 2 * rad);
g.setColor(Color.gray);
g.drawOval(midX - rad - 2, midY - rad - 2, 2 * rad + 4, 2 * rad + 6);
g.drawOval(midX - rad - 3, midY - rad - 3, 2 * rad + 6, 2 * rad + 6);
g.setColor(Color.black);
g.fillRect(midX+rad/2-28,midY-7,68,14);
g.setColor(Color.white);
g.drawString(date,midX+rad/2-28,midY+4);
for (int i = 0; i < 60; i++) {
if (i % 5 == 0) {
g.setColor(Color.black);
g.drawLine(midX + (int) ((rad * 6 / 7) * Math.sin(Math.toRadians(i * 6))), midY - (int) ((rad * 6 / 7) * Math.cos(Math.toRadians(i * 6))), midX + (int) (rad * Math.sin(Math.toRadians(i * 6))),
midY - (int) (rad * Math.cos(Math.toRadians(i * 6))));
} else {
g.setColor(Color.gray);
g.drawLine(midX + (int) ((rad * 6.5 / 7) * Math.sin(Math.toRadians(i * 6))), midY - (int) ((rad *
6.5 / 7) * Math.cos(Math.toRadians(i * 6))), midX + (int) (rad * Math.sin(Math.toRadians(i *
6))), midY - (int) (rad * Math.cos(Math.toRadians(i * 6))));
}
}
showStatus(Timestart);
showStatus(Timstart);
assignAngles();
hours.disp(g);
minutes.disp(g);
seconds.disp(g);
g.setColor(Color.red);
g.fillOval(midX - 3, midY - 3, 6, 6);
g.setColor(Color.green);
g.fillOval(midX - 1, midY - 1, 2, 2);
g.setColor(Color.black);
g.setFont(fnt);
showStatus("Current Time ---- " + hr + ":" + min / 10 + min % 10 + ":" + sec / 10 + sec % 10);
}
class ClockHand {
private int leng;
private int hlength;
private Color handColour;
private Shape hand;
private double rect;
double ang;
double value;
AffineTransform at;
ClockHand(double val, Color colour, int ret) {
leng = 100;
value = val;
hlength = 0;
handColour = colour;
rect = Math.PI * ret / 180;
initial();
}
ClockHand(double val, int leng, Color colour, int ret) {
this.leng = leng;
this.value = val;
hlength = 0;
handColour = colour;
rect = Math.PI * ret / 180;
initial();
}
ClockHand(double val, int leng, int ha, Color colour, int ret) {
this.leng = leng;
this.value = val;
hlength = ha;
handColour = colour;
rect = Math.PI * ret / 180;
initial();
}
void initial() {
int x[] = new int[4];
int y[] = new int[4];
x[0] = Clock.midX - hlength;
y[0] = Clock.midY;
x[1] = Clock.midX + (int) ((leng / 2) * Math.cos(rect));
y[1] = Clock.midY - (int) ((leng / 2) * Math.sin(rect));
x[2] = Clock.midX + leng;
y[2] = Clock.midY;
x[3] = Clock.midX + (int) ((leng / 2) * Math.cos(rect));
y[3] = Clock.midY + (int) ((leng / 2) * Math.sin(rect));
hand = new Polygon(x, y, 4);
}
void disp(Graphics g) {
Graphics2D gd = (Graphics2D) g;
g.setColor(handColour);
at = AffineTransform.getRotateInstance(ang - Math.PI / 2, Clock.midX, Clock.midY);
gd.fill(at.createTransformedShape(hand));
gd.draw(at.createTransformedShape(hand));
}
}
}
And here's the html code for the applet:
CODE
<html>
<applet code="Clock" height = 350 width = 370 >
</applet>
</html>
Thanks.
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24 Oct, 2008 - 07:38 AM
, that worked. 
. helped me a lot.
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