Seven segment Display

Question

Hi,
My project is to do with a petrol pump and the simulation of it.
My problem is that i need to create a seven segment display in an interface containing Jbuttons that when pressed will run methods.
I have the Jbuttons created and there should be(which there currently isnt) a counter shown next to the button for the following method in the Jframe
public void StartSqueezing()
NozzleReady=false;
NozzleInUse=true;
NozzleNotInUse=false;
do{
if( LitresDispensedPerTransaction < PetrolLimit)
LitresDispensedPerTransaction = (LitresDispensedPerTransaction + 0.10);
try {
Thread.sleep(1000) ;
//1000 millisecs
catch(InterruptedException ex) {
while (NozzleInUse = true );
I also have this further down- getPrice is just another method in the code.
private void makeFrame()
frame = new JFrame("Peter Pump");
Container contentPane = frame.getContentPane();
contentPane.setLayout(new GridLayout(3, 2));
JButton getPrice = new JButton ("getPrice");
contentPane.add(getPrice);
getPrice.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) { getPrice(); }
I need a seven segment display that will count up the number of litres of fuel dispensed when the Jbutton representing the above "StartSqueezing" method is pressed. The counter should move up by 0.1 each time.
I am by no means asking anybody to do this for me, i would just like some help and to be pointed in the right direction for what i need to read up about.
Many Thanks,
Edward

Answer 1

Darryl,
He is a guy at my college, its ok nobody likes him anyway :P i will just completely ignore what he said as he is actually no better than i am haha.
Anyway, back to something that matters.....
public void StartSqueezing()
        NozzleReady=false;
        NozzleInUse=true;
        NozzleNotInUse=false;
        Runnable run1 = new Runnable() { public void run()
         do{
           LitresDispensedPerTransaction =+ 0.10;
          try { Thread.sleep(200);}
             catch(InterruptedException ex) {}
         while (NozzleInUse == true ); 
     Thread thrd1 = new Thread(run1);
     thrd1.start();       
    }I have put this is the action listener of a button and it wont work....any ideas???
Edward