Re: Possible Array problem. Applet Compiles but does not run!

From: Andrew Thompson (SeeMySites_at_www.invalid)
Date: 12/16/04 

Date: Thu, 16 Dec 2004 14:19:15 GMT

On Thu, 16 Dec 2004 08:42:59 -0500, BladeZ wrote:

> I have this script (sorry its long but its neccessary for me to post it
> all);

SSCCE's[1] are quite welcome here, and an entire post of 126
lines is not unreasonable.
[1] <http://www.physci.org/codes/sscce.jsp>

(snip main code)
> This compiles, however it does not initialise. I Don't really understand
> what the Dos window tells me but I think the problem is in line 29;

Yes, but your line numbers do not correspond with mine.

In any case, the problem is pretty clear.. see this altered fragment

<snippet>
import java.awt.*;
import java.applet.*;
import java.awt.event.*;

public class MobileShop extends Applet implements ActionListener{
        private Mobile phone[];
     private Button priceListbutton;
           private Button button[];
           public int Decision = 0;
           private int modelNumber = 5;

    public void init() {

       // this only needs to be done once, and 'init'ially.
      phone = new Mobile[modelNumber];
        phone[0] = new Mobile("R2D2", 3, 5, 102,false, 79.95f);
       phone[1] = new Mobile("C3PO", 4, 6, 85, false, 99.95f);
       phone[2] = new Mobile("UB40", 5, 12, 89, false, 129.95f);
       phone[3] = new Mobile("WD40", 10, 10, 91, true, 189.95f);
       phone[4] = new Mobile("RU18", 12,18, 77, true, 219.95f);

       // further, it needs to have created the phones array
       // *before* it gets to here!
       button = new Button[modelNumber];
        for(int i = 0; i < modelNumber; i++)
        {
            button[i] = new Button(phone[i].getmodel());
            add(button[i]);
            button[i].addActionListener(this);
        }
    } // end init

    public void paint(Graphics g) {
       if (Decision == 0){
                    for (int a = 0; a < modelNumber; a ++){
          g.drawString("Name: " + phone[a].getmodel(), 90,70 + 15 * a);
   }
...
</snippet>

HTH 

-- 
Andrew Thompson
http://www.PhySci.org/codes/  Web & IT Help
http://www.PhySci.org/  Open-source software suite
http://www.1point1C.org/  Science & Technology
http://www.LensEscapes.com/  Images that escape the mundane

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