Re: Strange JTable issue in Sun's Java code

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From	Jeff Higgins <jeff@invalid.invalid>
Newsgroups	comp.lang.java.gui
Subject	Re: Strange JTable issue in Sun's Java code
Date	Mon, 16 Jan 2012 14:48:08 -0500
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On 01/16/2012 01:34 PM, Novice wrote:
> I'm getting an exception I don't understand when I attempt to delete all
> the data in a small Jtable (46 rows, 3 columns).
>
> Here's the stacktrace; the "rowCount = 45" is a diagnostic I'm writing:
> ========================================================================
> rowCount = 45
> Exception in thread "AWT-EventQueue-0"
> java.lang.ArrayIndexOutOfBoundsException: 0
> 	at javax.swing.SizeSequence.removeEntries(SizeSequence.java:383)

> ... When I get to line 383 of that method, I get the same "cannot be
> resolved to a variable" notation on EVERY variable in that line, even
> variable i, which has just been explicitly set to 0.

I don't see any line numbers in the code you have provided.
I don't see a variable i in the code you have provided.
>
> Here's the complete code for this method:
>
> ========================================================================
>      /**
>       * Removes a contiguous group of entries
>       * from this<code>SizeSequence</code>.
>       * Note that the values of<code>start</code>  and
>       *<code>length</code>  must satisfy the following
>       * conditions:<code>(0<= start<  getSizes().length)
>       * AND (length>= 0)</code>.  If these conditions are
>       * not met, the behavior is unspecified and an exception
>       * may be thrown.

Where are you checking these?

>       *
>       * @param start   the index of the first entry to be removed
>       * @param length  the number of entries to be removed
>       */
>     public void removeEntries(int start, int length) {
>          int sizes[] = getSizes();

I would set a break point just above.

>          int end = start + length;
>          int n = a.length - length;
>          a = new int[n];

What is a?

>          for (int i = 0; i<  start; i++) {
>              a[i] = sizes[i] ;
>          }
>          for (int i = start; i<  n; i++) {
>              a[i] = sizes[i+length] ;
>          }
>          setSizes(a);
>      }
> ========================================================================

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Thread

Strange JTable issue in Sun's Java code Novice <novice@example..com> - 2012-01-16 18:34 +0000
  Re: Strange JTable issue in Sun's Java code Jeff Higgins <jeff@invalid.invalid> - 2012-01-16 14:48 -0500
    Re: Strange JTable issue in Sun's Java code Jeff Higgins <jeff@invalid.invalid> - 2012-01-16 14:55 -0500
    Re: Strange JTable issue in Sun's Java code Jeff Higgins <jeff@invalid.invalid> - 2012-01-16 15:19 -0500
      Re: Strange JTable issue in Sun's Java code Jeff Higgins <jeff@invalid.invalid> - 2012-01-16 15:31 -0500
        Re: Strange JTable issue in Sun's Java code Jeff Higgins <jeff@invalid.invalid> - 2012-01-16 17:57 -0500
    Re: Strange JTable issue in Sun's Java code Novice <novice@example..com> - 2012-01-17 01:48 +0000
      Re: Strange JTable issue in Sun's Java code Jeff Higgins <jeff@invalid.invalid> - 2012-01-17 03:22 -0500
        Re: Strange JTable issue in Sun's Java code Jeff Higgins <jeff@invalid.invalid> - 2012-01-17 03:29 -0500
        Re: Strange JTable issue in Sun's Java code Jeff Higgins <jeff@invalid.invalid> - 2012-01-17 03:49 -0500
        Re: Strange JTable issue in Sun's Java code Jeff Higgins <jeff@invalid.invalid> - 2012-01-17 03:55 -0500
        Re: Strange JTable issue in Sun's Java code Novice <novice@example..com> - 2012-01-17 22:21 +0000
          Re: Strange JTable issue in Sun's Java code Jeff Higgins <jeff@invalid.invalid> - 2012-01-17 18:18 -0500
            Re: Strange JTable issue in Sun's Java code Jeff Higgins <jeff@invalid.invalid> - 2012-01-17 20:56 -0500
              Re: Strange JTable issue in Sun's Java code Novice <novice@example..com> - 2012-01-18 05:24 +0000
                Re: Strange JTable issue in Sun's Java code Novice <novice@example..com> - 2012-01-18 17:40 +0000
            Re: Strange JTable issue in Sun's Java code Novice <novice@example..com> - 2012-01-18 05:37 +0000
  Re: Strange JTable issue in Sun's Java code Christian Kaufhold <chka@ucuri.chka.de> - 2012-01-19 21:00 +0100

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