i need a clock in swing. not basically a real clock but i need 2 lines one for hour and one for min with 2 text fields where user can type hour and min and the clock on the top should display the time by the user specific needs. how can i do that? with ellipse and point2d classes?
> i need a clock in swing. not basically a real clock
> but i need 2 lines one for hour and one for min with
> 2 text fields where user can type hour and min and
> the clock on the top should display the time by the
> user specific needs. how can i do that? with ellipse
> and point2d classes?
If you don't need a realtime clock just use two JTextFields and a JLabel to display the input..
> how to draw the lines? i mean i am confused.
Don't be confused. Take a tutorial http://java.sun.com/docs/books/tutorial/2d/index.html
package cruft;
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import javax.swing.*;
import javax.swing.event.*;
public class TextTest
{
public static void main(String[] args)
{
Clock frame = new Clock();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
}
class Clock extends JFrame
{
public Clock()
{
setTitle("Clock");
DocumentListener listener = new ClockFieldListener();
JPanel panel = new JPanel();
panel.add(new JLabel("Hours:"));
hourField = new JTextField("12", 3);
panel.add(hourField);
hourField.getDocument().addDocumentListener(listener);
panel.add(new JLabel("Minutes:"));
minuteField = new JTextField("00", 3);
panel.add(minuteField);
minuteField.getDocument().addDocumentListener(listener);
add(panel, BorderLayout.SOUTH);
clock = new ClockPanel();
add(clock, BorderLayout.CENTER);
pack();
}
public void setClock()
{
try
{
int hours = Integer.parseInt(hourField.getText().trim());
int minutes = Integer.parseInt(minuteField.getText().trim());
clock.setTime(hours, minutes);
}
catch (NumberFormatException e) {}
}
public static final int DEFAULT_WIDTH = 300;
public static final int DEFAULT_HEIGHT = 300;
private JTextField hourField;
private JTextField minuteField;
private ClockPanel clock;
private class ClockFieldListener implements DocumentListener
{
public void insertUpdate(DocumentEvent event) { setClock(); }
public void removeUpdate(DocumentEvent event) { setClock(); }
public void changedUpdate(DocumentEvent event) {}
}
}
class ClockPanel extends JPanel
{
public ClockPanel()
{
setPreferredSize(new Dimension(2 * RADIUS + 1, 2 * RADIUS + 1));
}
public void paintComponent(Graphics g)
{
super.paintComponent(g);
Graphics2D g2 = (Graphics2D) g;
Ellipse2D circle = new Ellipse2D.Double(0, 0, 2 * RADIUS, 2 * RADIUS);
g2.draw(circle);
double hourAngle = Math.toRadians(90 - 360 * minutes / (12 * 60));
drawHand(g2, hourAngle, HOUR_HAND_LENGTH);
double minuteAngle = Math.toRadians(90 - 360 * minutes / 60);
drawHand(g2, minuteAngle, MINUTE_HAND_LENGTH);
}
public void drawHand(Graphics2D g2, double angle, double handLength)
{
Point2D end = new Point2D.Double(
RADIUS + handLength * Math.cos(angle),
RADIUS - handLength * Math.sin(angle));
Point2D center = new Point2D.Double(RADIUS, RADIUS);
g2.draw(new Line2D.Double(center, end));
}
public void setTime(int h, int m)
{
minutes = h * 60 + m;
repaint();
}
private double minutes = 0;
private int RADIUS = 100;
private double MINUTE_HAND_LENGTH = 0.8 * RADIUS;
private double HOUR_HAND_LENGTH = 0.6 * RADIUS;
}
Message was edited by:
fastmike
> > package cruft;
> ..................
> public class TextTest
> {
> ..................
> ..................
>private double minutes = 0;
> private int RADIUS = 100;
>private double MINUTE_HAND_LENGTH = 0.8 * RADIUS;
> private double HOUR_HAND_LENGTH = 0.6 * RADIUS;
>
>
> Message was edited by:
> fastmike
fastmike
Again, spoonfeeding != teaching.
Again, you are not helping here, you are in fact harming the learning process.
Again, we are not impressed with your so-called coding abilities. Any one of us could just paste up the code and in fact create code far better than your ****, yet we know better.
Again, you are doing the forum a great disservice.
Please change your behavoir or just leave.
