JTable causing ArrayIndexOutOfBounds exception on Linux

I have an application which defines a TableModel so that data retreived from our mainframe application can be displyed in a JTable.
The following problem occurs on Linux (Redhat version 7.3 and 8.0) but not on Windows (XP)
I retrieve some data from a table with 20 columns and then browse around and happen to leave one of the last few columns present on the screen. I then choose to view data from a second table (rerunning a JDBC query). This table only has 12 columns. As the JTable redraws (because of the data change) multiple arrayOutOfBoundsExceptions are thrown. The table eventually refreshes and the application continues but I would like to avoid all these error message being dumped to the console.
If the first table is displaying a column less than the number of columns in the second table then no problem occurs.
Any ideas or is this a bug?
Thanks
Ian Jones

My guess would be that the method getColumnCount() in
the tablemodel is returning the wrong numberI have added a println statement to just before it returns the columnCount. It returns the correct value. However, all of the errors have been created by the time it has called the getColumnCount() method. It appears that after I call fireTableStructureChanged(), the JTable starts to redraw before calling the getColunmnCount() method. This means it must be using the previous value of the columnCount which is incorrect and too high.
Below is the output from some debugging statements:
Column Count: 0
Firing table changed event
Column Count: 24
Column Count: 24
Column Count: 24
Column Count: 24
Column Count: 24
Column Count: 24
Column Count: 24
Column Count: 24
Column Count: 24
Column Count: 24
Column Count: 24
Column Count: 24
Column Count: 24
Column Count: 24
Column Count: 24
Column Count: 24
Column Count: 24
Column Count: 24
Column Count: 24
Column Count: 24
Column Count: 24
Column Count: 24
Column Count: 24
Column Count: 24
Column Count: 24
Firing table changed event
java.lang.ArrayIndexOutOfBoundsException: 2
aColumn: 2
row length: 2
java.lang.ArrayIndexOutOfBoundsException: 3
aColumn: 3
row length: 2
java.lang.ArrayIndexOutOfBoundsException: 4
aColumn: 4
row length: 2
java.lang.ArrayIndexOutOfBoundsException: 5
aColumn: 5
row length: 2
java.lang.ArrayIndexOutOfBoundsException: 6
aColumn: 6
row length: 2
java.lang.ArrayIndexOutOfBoundsException: 7
aColumn: 7
row length: 2
java.lang.ArrayIndexOutOfBoundsException: 8
aColumn: 8
row length: 2
java.lang.ArrayIndexOutOfBoundsException: 9
aColumn: 9
row length: 2
Column Count: 2
Column Count: 2
Column Count: 2
It shows when getColumnCount is called and what it returns. It shows when structurechanged event is fired and the error messages. From the ordering you can see that the error messages are printed before the column count is queried
Is there any way to enforce the querying of the column count? It all appears to work correctly on windows.
Thanks again
Ian Jones

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JTable causing ArrayIndexOutOfBounds exception

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Object [ ][ ] obj= new Object[allRows][allCols];
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obj[rows][1] = ....
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Here's a simple example for increasing the size of an array:
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Hi There,
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cmdID.cmdId={4A36174B-EC0C-4D73-A23D-F15D164542DE} cmdID.index=0
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Return Address: 457BC448
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Parameters    : F001008E 7800FDDD C5100DFC EC0107EA
Source File   : (not available)
Return Address: 481000C3
Function Name : (not available)
Module Name   : (not available)
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Hi,
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DirkW

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Underscore causing an exception in a toolbar

// I'm using Netbeans 7.4 release candidtate 2
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* Copyright (c) 2008, 2012 Oracle and/or its affiliates.
* All rights reserved. Use is subject to license terms.
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import javafx.scene.layout.Pane;
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The underscore is being parsed as an indicator that the next character should be a mnemonic, and the underscore is then stripped. This happens by default on Buttons, but not on Labels.
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C:\ProgramData\National Instruments\MAX\Logs\20130709_091257-NIMax-00001848.log
C:\ProgramData\National Instruments\MAX\Logs\20130709_091257-NIMax-00001848.dmp
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Sorry, I'm confused myself.
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Kind regards
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James,
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Thanks for reporting this, and I hope this is not blocking your development.
--mark

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LOCAL EXCEPTION STACK:
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     at com.aon.struts.action.BaseAction.perform(Compiled Code)
     at org.apache.struts.action.ActionServlet.processActionPerform(Compiled Code)
     at org.apache.struts.action.ActionServlet.process(Compiled Code)
     at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:510)
     at javax.servlet.http.HttpServlet.service(Compiled Code)
     at javax.servlet.http.HttpServlet.service(Compiled Code)
     at com.ibm.servlet.engine.webapp.StrictServletInstance.doService(Compiled Code)
     at com.ibm.servlet.engine.webapp.StrictLifecycleServlet._service(Compiled Code)
     at com.ibm.servlet.engine.webapp.IdleServletState.service(Compiled Code)
     at com.ibm.servlet.engine.webapp.StrictLifecycleServlet.service(Compiled Code)
     at com.ibm.servlet.engine.webapp.ServletInstance.service(Compiled Code)
     at com.ibm.servlet.engine.webapp.ValidServletReferenceState.dispatch(Compiled Code)
     at com.ibm.servlet.engine.webapp.ServletInstanceReference.dispatch(Compiled Code)
     at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.handleWebAppDispatch(Compiled Code)
     at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.dispatch(Compiled Code)
     at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.forward(Compiled Code)
     at com.ibm.servlet.engine.srt.WebAppInvoker.doForward(Compiled Code)
     at com.ibm.servlet.engine.srt.WebAppInvoker.handleInvocationHook(Compiled Code)
     at com.ibm.servlet.engine.invocation.CachedInvocation.handleInvocation(Compiled Code)
     at com.ibm.servlet.engine.invocation.CacheableInvocationContext.invoke(Compiled Code)
     at com.ibm.servlet.engine.srp.ServletRequestProcessor.dispatchByURI(Compiled Code)
     at com.ibm.servlet.engine.oselistener.OSEListenerDispatcher.service(Compiled Code)
     at com.ibm.servlet.engine.oselistener.SQEventListenerImp$ServiceRunnable.run(Compiled Code)
     at com.ibm.servlet.engine.oselistener.SQEventListenerImp.notifySQEvent(Compiled Code)
     at com.ibm.servlet.engine.oselistener.serverqueue.SQEventSource.notifyEvent(Compiled Code)
     at com.ibm.servlet.engine.oselistener.serverqueue.SQWrapperEventSource$SelectRunnable.notifyService(Compiled Code)
     at com.ibm.servlet.engine.oselistener.serverqueue.SQWrapperEventSource$SelectRunnable.run(Compiled Code)
     at com.ibm.servlet.engine.oselistener.outofproc.OutOfProcThread$CtlRunnable.run(Compiled Code)
     at java.lang.Thread.run(Compiled Code)
Jul 01, 2003 06:32:36 PM com.aon.struts.action.BaseAction perform
SEVERE: com.aon.ame.quotation.struts.action.ViewSpecialEndorsementsAction.aonPerform() threw an exception: RemoteException occurred in server thread; nested exception is:
     com.ibm.ejs.container.UncheckedException: ; nested exception is:
     EXCEPTION [TOPLINK-125] (3.6.4 (build 245)): TOPLink.Public.Exceptions.DescriptorException
EXCEPTION DESCRIPTION: The mapping for the attribute [underwritingCompany] uses indirection, and so must be initialized to a new ValueHolder. Currently the value is: [null].
Can anyone shed any light on why this might have happened?
Many thanks.

I don't see how caching is affected by this, but the exception is complaining that you have a relationship that uses indirection and have not instantiated the value holders.
I.e.,
Customer has 1-1 to Address, and you're using ValueHolderInterface for the type. Either in the constructor or in the declaration of the attribute, you need to init the value holder. You should do the same for 1-M's also (unless you're using transparent indirection) For example:
public class Customer {
String name;
String title;
ValueHolderInterface address = new ValueHolder();
ValueHolderInterface orders = new ValueHolder(new Vector());

Help with ArrayIndexOutOfBounds Exception

Hi all,
I am very new to programming in general and Java in particular. I'm working on a program from a book that is supposed to read 72 hourly readings of voltage and then print the mean voltage over that time period and any hours where the voltage varies from the mean by more than ten percent.
I have an array set up that should have 72 elements created randomly, between 12000-14000. I'm getting an ArrayIndexOutOfBounds Exception when I try to run the program. So far as I understand, this means that somewhere in the program I'm trying to reference an array index that doesn't exist. I just can't see where that is! I've tried a couple different things to see if they've worked but have had no luck.
I'm sure this is just a simple thing, but I'm feeling a little under the weather and I think my brain is pickled from looking at this code for too long. Any suggestions or ideas are gladly welcomed! I'll paste the code below to take a look at. Sorry if it's ugly or messy... I'm just figuring this stuff out still!
Thanks so much-
Heather
import java.lang.*;
import java.util.*;
class VoltageReport {
VoltageReport () throws IOException {
System.out.println("Welcome to the voltage meter program!");
//int place = 0;
int MeterReadings[] = new int [71];
int place = 0;
for (int i = 0; i <= 71; i++) {
//if (place == 72) break; thought this would do it, but it doesn't.
MeterReadings[place] = (int) (Math.random()*2000+12000);
place++;
place = 0;
int VoltageMean;
VoltageMean = 0;
for (int i = 0; i <= 71; i++) {
VoltageMean = VoltageMean + MeterReadings[place];
place++;
place = 0;
VoltageMean = VoltageMean / 72;
for (int i = 0; i <= 71; i++) {
if (MeterReadings[place] < (.9 * VoltageMean)) {
System.out.println("Hour " + place + " is more than 10% lower than the " + "mean of " + VoltageMean + " .");
else if (MeterReadings[place] > (.9 * VoltageMean)) {
System.out.println("Hour " + place + " is more than 10% higher than the " + "mean of " + VoltageMean + " .");
place++;
System.out.println("That's all the information I have. Goodbye!"); }
public static void main (String [] args) throws IOException {
new VoltageReport();
}

if (MeterReadings[place] < (.9 * VoltageMean))
System.out.println("Hour " + place + " is more than 10% lower than the " + "mean of " + VoltageMean + " .");
else if (MeterReadings[place] > (.9 * VoltageMean))
System.out.println("Hour " + place + " is more than 10% higher than the " + "mean of " + VoltageMean + " .");The problem lies in the else-if. You are checking if the voltage is over 90% of the mean. I think you want to check if it is over 110% of(10% over) the mean.
else if(MeterReadings[place] > (1.1 * VoltageMean))
....And a few other things.
Arrays
int[] temp = new int[5]; // you have indexes (indices?) 0, 1, 2, 3 & 4 is the last one
// Count them, there is 5 there. Since we always start at 0, the last one is always 1 less than the length.
// Never do temp[temp.length], this will ALWAYS end in IndexOutOfBoundsException.
// temp[temp.length-1] is the way to get the last element.
Posting code
Since you were unusually nice, no one has cut sick at you, but in the future when you post code, put it between [ code ] and [ /code ] tags (I added spaces so the forum doesn't recognize them, but you get the idea).
Cheers,
Radish21

ArrayIndexOutofBound exception, PLEASE HELP

I am trying to validate my xsd file but when it tries to execute the following line:
org.apache.xerces.parsers.SAXParser p = new org.apache.xerces.parsers.SAXParser();
it throws the ArrayIndexOutOfBound exception.
Anyone has any idea on it?
thanks in advance...
faisalk

Are you sure that's the line that's throwing the error?
I just compiled and ran the following:
public class TestMain{
     public static void main(String args[]){
          org.apache.xerces.parsers.SAXParser p = new org.apache.xerces.parsers.SAXParser();
          System.out.println(p.toString());
     }     //end main()
}     //end class TestMain

JTable causing ArrayIndexOutOfBounds exception on Linux

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