Whenever the Military Time button is pushed the Military time is displayed, but only for one second. It then reverts back to standard 12 hour digital time. What is going on, and can anyone help me to fix this?
Code:
import java.awt.*;
import java.awt.event.*;
import java.text.*;
import java.util.*;
import java.applet.*;

public class AnalogClock extends Applet implements ActionListener, Runnable{
	
	private static final long serialVersionUID = 1787899701025425670L;
	TextField text = new TextField(20);
	Thread t = null;
	boolean threadSuspended;
	String timeString = "";
	int width, height;
	
	Calendar calendar = Calendar.getInstance();
	int hrHand, mnHand, secHand, radius = 85, hrLength, mnLength,
		secLength, cx, cy, x1, y1, x2, y2;
	private Button buttonMilt;
	private boolean buttonMiltClicked = false;
	
	public void init()
	{
		buttonMilt = new Button("Military Time");
		add(buttonMilt);
		buttonMilt.addActionListener(this);

		
		width = getSize().width;	//get width of applet
		height = getSize().height;	//get height of applet
		
		hrLength = 6*radius/10;		//sets hours
		mnLength = 8*radius/10; 	//sets minutes
		secLength = 9*radius/10; 	//sets seconds
		cx = width/2; 				//initialize position cx
		cy = height/2;				//initialize position cy
	}
		
	public void start() //initialize clock
	{
		if(t == null)
		{
			t = new Thread(this);
			t.setPriority(Thread.MIN_PRIORITY);
			threadSuspended = false;
			t.start();
		}
		else 
		{
			if (threadSuspended) 
			{
				threadSuspended = false;
				synchronized(this) 
				{
					notify();
				}
			}
		}
	}
	
	public void stop() //stop clock
	{
		threadSuspended = true;
	}
	
	public void run() //run clock
	{
		try {
			
			while(true) 
			{
				Calendar cal = Calendar.getInstance();						   //*gets time from the system
					hrHand = cal.get(Calendar.HOUR_OF_DAY);					   //*gets hour
				if (hrHand > 12) hrHand -= 12;								   //*if hour exceeds 12 decrease
					mnHand = cal.get(Calendar.MINUTE);						   //*get minutes
					secHand = cal.get(Calendar.SECOND);							//*get seconds	
			
				SimpleDateFormat formatter									   //********
					= new SimpleDateFormat("hh:mm:ss a", Locale.getDefault()); //*Gets time and 
				Date date = cal.getTime();									   //*puts it into a digital timer
				timeString = formatter.format(date);						   //********
			
				if (threadSuspended) 
				{
					synchronized(this) 
					{
						while (threadSuspended) 
						{
							wait();
						}
					}
				}
				repaint();
				Thread.sleep(1000);
			}
		}
		catch (InterruptedException e) 
		{
		}
	}
	
	
	public void paint(Graphics g) //paint clock
	{
		Graphics2D g2d = (Graphics2D) g; //graphics g2d
		Graphics2D g2 = (Graphics2D) g; //graphics g2
		
		buttonMilt.setLocation(200,25);
		
		if(hrHand >= 12) //decrease if hour exceeds 12
			hrHand -= 12;
		
		for (int i = 0; i < 60; i++) //tickmarks for loop
		{
			g.setColor(Color.black); //color of tickmarks
			x2 = (int)(cx + radius * Math.sin(i * 2 * Math.PI / 60)); //tickmarks endpoint1
			y2 = (int)(cy - radius * Math.cos(i * 2 * Math.PI / 60)); //tickmarks endpoint2
			if (i % 5 != 0)
			{
				x1 = (int)(cx + 0.9f * radius * Math.sin(i * 2 * Math.PI / 60)); //length bigticks endpoint1
				y1 = (int)(cy - 0.9f * radius * Math.cos(i * 2 * Math.PI / 60)); //length bigticks endpoint2
			}
			else
			{
				x1 = (int)(cx + 0.8f * radius * Math.sin(i * 2 * Math.PI / 60)); //length littleticks endpoint1
				y1 = (int)(cy - 0.8f * radius * Math.cos(i * 2 * Math.PI / 60)); //length littleticks endpoint2
			}
			g.drawLine(x1, y1, x2, y2); //tickmarks
		}
		
		g2d.setFont(getFont()); //sets font of numbers
		for(int hour = 1; hour <= 12; hour++) //Analog numbers for loop
		{
			double angle = (hour-3)*2*Math.PI/12; //angle of numbers
			int x = (int)(Math.cos(angle)*(width/3))+width/2-5; //endpoint1 of numbers
			int y = (int)(Math.sin(angle)*(width/3))+width/2+5; //endpoint2 of numbers
			g.setColor(Color.black); //color of analog numbers
			g2d.drawString(""+hour, x, y); //Analog numbers
		}
		
		x2 = (int)(cx + hrLength * Math.sin((hrHand + mnHand / 60 + secHand / 3600)
				* 2 * Math.PI / 12)); //endpoint1 of hour hand
		y2 = (int)(cy - hrLength * Math.cos((hrHand + mnHand / 60 + secHand / 3600)
				* 2 * Math.PI / 12)); //endpoint2 of hour hand
		g.setColor(Color.red); //color of hour hand
		g2.setStroke(new BasicStroke(2)); //width of hour hand
		g.drawLine(cx - 1, cy - 1, x2 - 1, y2 - 1); //hour hand
		g2.setStroke(new BasicStroke(0)); //reset width
		
		x2 = (int)(cx + mnLength * Math.sin((mnHand + secHand / 60) * 2 * Math.PI / 60)); //endpoint1 of minute hand
		y2 = (int)(cy - mnLength * Math.cos((mnHand + secHand / 60) * 2 * Math.PI / 60)); //endpoint2 of minute hand
		g.setColor(Color.green); //color of minute hand
		g2.setStroke(new BasicStroke(2)); //width of minute hand
		g.drawLine(cx - 1, cy - 1, x2 - 1, y2 - 1); //minute hand
		g2.setStroke(new BasicStroke(0)); // reset width of minute hand
		
		x2 = (int)(cx + secLength * Math.sin(secHand * 2 * Math.PI / 60)); //endpoint1 of second hand
		y2 = (int)(cy - secLength * Math.cos(secHand * 2 * Math.PI / 60)); //endpoint2 of second hand
		g.setColor(Color.blue); //color of circle
		g2.setStroke(new BasicStroke(0)); //width of circle
		g.drawLine(cx - 1, cy - 1, x2 - 1, y2 - 1); //second hand
		
		g.setColor(Color.black); //color of circle
		g2.setStroke(new BasicStroke(2)); //width of circle
		g.drawOval((width - 2 * radius) / 2, (height - 2 * radius) / 2, 2 * radius,
				2 * radius); //circle
		g2.setStroke(new BasicStroke(0)); //reset width
		
		g.setColor(Color.black); //color of timer
		g.drawString(timeString, 75, height-105); //timer
		
	}
	
	public void actionPerformed(ActionEvent e)  
    {  
		Calendar cal = Calendar.getInstance();						   //*gets time from the system
		
		if(e.getSource()==buttonMilt){
			
			if(buttonMiltClicked == true)
			{
			SimpleDateFormat formatter									   //********
			= new SimpleDateFormat("HH:mm:ss a", Locale.getDefault()); //*Gets time and 
			Date date = cal.getTime();									   //*puts it into a digital timer
			timeString = formatter.format(date);						   //********
			}
			buttonMiltClicked = true;
			repaint();
		}
			
    }
	
}
Program created in Eclipse.
The action performed is at the bottom of the code, and the time is in the run() not the init().
You will probably need to push the button a couple of time to actually see the digital time go into Military time.
Also the applet window will need to be extended to actually see the button.
Please excuse some of my code and the way it is formatted. Thank you for you time and help.