Thursday, October 15, 2009

Java : Digital clock using swing

This is a simple program to implement digital clock using swing. However format of time can be modified to users desire format.

Here is the complete tested code, directly you can run this code.

/* ShowTime.java */

import java.awt.event.*;
import javax.swing.*;
import java.awt.*;
import java.text.*;

public class ShowTime extends JFrame
{
JLabel time;

ShowTime()
{
setSize(300,200);
setTitle("http://simpleandeasycodes.blogspot.com/");
setLocation(100,100);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

setLayout(new GridBagLayout());

time = new JLabel("");

time.setFont(new Font("SansSerif",Font.BOLD, 36));

time.setForeground(Color.MAGENTA);

add(time);

//starting new Thread which will update time
new Thread(new Runnable()
{
public void run()
{ try
{
updateTime();
}
catch (Exception ie)
{ }
}
}).start();
}

public void updateTime()
{
try
{
while(true)
{
//geting Time in desire format
time.setText(new SimpleDateFormat("hh:mm:ss a").format(new java.util.Date()));
//Thread sleeping for 1 sec
Thread.currentThread().sleep(1000);
}
}
catch (Exception e)
{
System.out.println("Exception in Thread Sleep : "+e);
}
}

public static void main(String[] args)
{
JFrame obj = new ShowTime();
obj.setVisible(true);
}
}

Output

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