Develop Reference

Cannot find exception's cause [duplicate]

I made a color palette with a jPanel and a JLabel array in it. At first it worked well, but then i put some other jLabels out of the JPanel and added them some events. Now I keep getting this error:
Exception in thread "AWT-EventQueue-0" java.lang.IllegalArgumentException: Comparison method violates its general contract!
at java.util.TimSort.mergeLo(TimSort.java:747)
at java.util.TimSort.mergeAt(TimSort.java:483)
at java.util.TimSort.mergeCollapse(TimSort.java:410)
at java.util.TimSort.sort(TimSort.java:214)
at java.util.TimSort.sort(TimSort.java:173)
at java.util.Arrays.sort(Arrays.java:659)
at java.util.Collections.sort(Collections.java:217)
at javax.swing.SortingFocusTraversalPolicy.enumerateAndSortCycle(SortingFocusTraversalPolicy.java:136)
at javax.swing.SortingFocusTraversalPolicy.getFocusTraversalCycle(SortingFocusTraversalPolicy.java:110)
at javax.swing.SortingFocusTraversalPolicy.getFirstComponent(SortingFocusTraversalPolicy.java:435)
at javax.swing.LayoutFocusTraversalPolicy.getFirstComponent(LayoutFocusTraversalPolicy.java:166)
at javax.swing.SortingFocusTraversalPolicy.getDefaultComponent(SortingFocusTraversalPolicy.java:515)
at java.awt.FocusTraversalPolicy.getInitialComponent(FocusTraversalPolicy.java:169)
at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:380)
at java.awt.Component.dispatchEventImpl(Component.java:4731)
at java.awt.Container.dispatchEventImpl(Container.java:2287)
at java.awt.Window.dispatchEventImpl(Window.java:2719)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:723)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:682)
at java.awt.EventQueue$3.run(EventQueue.java:680)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.awt.EventQueue$4.run(EventQueue.java:696)
at java.awt.EventQueue$4.run(EventQueue.java:694)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:693)
at java.awt.SequencedEvent.dispatch(SequencedEvent.java:116)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:721)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:682)
at java.awt.EventQueue$3.run(EventQueue.java:680)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.awt.EventQueue$4.run(EventQueue.java:696)
at java.awt.EventQueue$4.run(EventQueue.java:694)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:693)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:244)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:163)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:147)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:139)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)
I tried to remove everything i've done after first time i got this error, but still keep getting it. When i change the layout from GridLayout to anything else, then the error disappears, but the code becomes useless. So i need GridLayout. When i move everything in that JPanel to another JPanel, the error also goes away. But when i remove the first JPanel, error comes back.
By the way, the program works, but it's not pleasent to keep getting errors...
Edit: When i use less than 225 color, there's no error. I'm really curious about what's happening. Any explanation would be appreciated...

It seems to me like you've hit a bug in the JDK since the error seems to come from Swing classes.
Options:
Define the property java.util.Arrays.useLegacyMergeSort as true. Either using in your code the line
System.setProperty("java.util.Arrays.useLegacyMergeSort", "true");
before any Swing code. As the first line in the main method should work.
Or adding
-Djava.util.Arrays.useLegacyMergeSort=true
to your starting options (in the console, or in the project properties in an IDE, Ant script, etc.)
Upgrade your JDK and see if the problem goes away
Downgrade to Java 6

Report my findings:
-Djava.util.Arrays.useLegacyMergeSort=true
works
but
System.setProperty("java.util.Arrays.useLegacyMergeSort", "true");
does not work.
It is due to the fact that in JDK Arrays.class
static final class LegacyMergeSort {
private static final boolean userRequested = ...
It is a static variable which is defined when jvm starts. Setting System property in the program will have no effect if the class has been loaded into jvm.
I have beeing monitoring the LegacyMergeSort.userRequested variable, and the findings confirmed with above statement.
Update:
The program must set system properties before java.util.Arrays is loaded to classloader.
Otherwise, once it is loaded, setting the properties is not going to be useful due to the reason mentioned above.
Make sure nothing else loaded Arrays.class:
By putting following code to your program to test:
java.lang.reflect.Method m = ClassLoader.class.getDeclaredMethod("findLoadedClass", new Class[] { String.class });
m.setAccessible(true);
ClassLoader cl = ClassLoader.getSystemClassLoader();
Object test1 = m.invoke(cl, "java.util.Arrays");
System.out.println("test1 loaded? ->" + (test1 != null));

[Update]
This solution unfortunately is not guaranteed to solve the problem in all cases. It is not enough to patch the default SortingFocusTraversalPolicy
of the KeyboardFocusManager.
I recommend to read the answer by Robin Loxley below, including his Update.
[/Update]
java.lang.IllegalArgumentException: Comparison method violates its general contract!
at java.util.TimSort.mergeHi(TimSort.java:868)
This problem is caused by a bug in javax.swing.LayoutComparator.
The following class installs a fixed version of javax.swing.LayoutComparator, which does not violate the contract of Comparator<Component>. This (or any other) fixed version of javax.swing.LayoutComparator should be submitted to Oracle by some Oracle contributor.
package ...;
import java.awt.Component;
import java.awt.ComponentOrientation;
import java.awt.FocusTraversalPolicy;
import java.awt.KeyboardFocusManager;
import java.awt.Window;
import java.lang.reflect.Field;
import java.util.Comparator;
import java.util.LinkedList;
import java.util.ListIterator;
import javax.swing.JRootPane;
import javax.swing.SortingFocusTraversalPolicy;
import javax.swing.UIManager;
/**
* Uses reflection to install a fixed version of {#link javax.swing.LayoutComparator} to solve the
* LayoutFocusTraversalPolicy/TimSort problem.
*
* <p>
* <code>java.lang.IllegalArgumentException: Comparison method violates its general contract!</code>
* <br/>
* {#code at java.util.TimSort.mergeHi(TimSort.java:868)}
* </p>
* <p>
* Usage: call {#code Class.forName(LayoutFocusTraversalPolicyTimSortBugFixer.class.getName())}
* before creating Swing components.
* </p>
*
* #author Burkhard Strauss
* #since Feb 2015
*/
public class LayoutFocusTraversalPolicyTimSortBugFixer
{
static
{
UIManager.getUI(new JRootPane()); // make Swing install the SortingFocusTraversalPolicy
final KeyboardFocusManager keyboardFocusManager = KeyboardFocusManager
.getCurrentKeyboardFocusManager();
final FocusTraversalPolicy focusTraversalPolicy = keyboardFocusManager
.getDefaultFocusTraversalPolicy();
boolean fixed = false;
if (focusTraversalPolicy instanceof SortingFocusTraversalPolicy)
{
try
{
final Field field = SortingFocusTraversalPolicy.class.getDeclaredField("comparator");
final boolean accessible = field.isAccessible();
try
{
field.setAccessible(true);
field.set(focusTraversalPolicy, new LayoutComparator());
fixed = true;
}
finally
{
field.setAccessible(accessible);
}
}
catch (final Exception e)
{
}
}
if (!fixed)
{
Loggers.getLoggerFor(LayoutFocusTraversalPolicyTimSortBugFixer.class).warn("could not fix the bug");
}
}
/**
* Fixed version of {#link javax.swing.LayoutComparator}.
* <p>
* Search for 'bugfix' in the code.
* </p>
*
* #author Burkhard Strauss
* #since Feb 2015
*/
#SuppressWarnings("serial")
private static class LayoutComparator implements Comparator<Component>, java.io.Serializable
{
private static final int ROW_TOLERANCE = 10;
private boolean horizontal = true;
private boolean leftToRight = true;
#SuppressWarnings("unused")
void setComponentOrientation(final ComponentOrientation orientation)
{
horizontal = orientation.isHorizontal();
leftToRight = orientation.isLeftToRight();
}
#Override
public int compare(Component a, Component b)
{
if (a == b)
{
return 0;
}
// Row/Column algorithm only applies to siblings. If 'a' and 'b'
// aren't siblings, then we need to find their most inferior
// ancestors which share a parent. Compute the ancestory lists for
// each Component and then search from the Window down until the
// hierarchy branches.
if (a.getParent() != b.getParent())
{
final LinkedList<Component> aAncestory = new LinkedList<Component>();
for (; a != null; a = a.getParent())
{
aAncestory.add(a);
if (a instanceof Window)
{
break;
}
}
if (a == null)
{
// 'a' is not part of a Window hierarchy. Can't cope.
throw new ClassCastException();
}
final LinkedList<Component> bAncestory = new LinkedList<Component>();
for (; b != null; b = b.getParent())
{
bAncestory.add(b);
if (b instanceof Window)
{
break;
}
}
if (b == null)
{
// 'b' is not part of a Window hierarchy. Can't cope.
throw new ClassCastException();
}
for (ListIterator<Component> aIter = aAncestory.listIterator(aAncestory.size()), bIter = bAncestory
.listIterator(bAncestory.size());;)
{
if (aIter.hasPrevious())
{
a = aIter.previous();
}
else
{
// a is an ancestor of b
return -1;
}
if (bIter.hasPrevious())
{
b = bIter.previous();
}
else
{
// b is an ancestor of a
return 1;
}
if (a != b)
{
break;
}
}
}
final int ax = a.getX(), ay = a.getY(), bx = b.getX(), by = b.getY();
int zOrder = a.getParent().getComponentZOrder(a) - b.getParent().getComponentZOrder(b);
{
//
// Here is the bugfix:
// Don't return 0 if a != b. This would violate the contract of
// Comparator<Component>.compare().
//
if (zOrder == 0)
{
zOrder = -1;
}
}
if (horizontal)
{
if (leftToRight)
{
// LT - Western Europe (optional for Japanese, Chinese, Korean)
if (Math.abs(ay - by) < ROW_TOLERANCE)
{
return (ax < bx) ? -1 : ((ax > bx) ? 1 : zOrder);
}
else
{
return (ay < by) ? -1 : 1;
}
}
else
{ // !leftToRight
// RT - Middle East (Arabic, Hebrew)
if (Math.abs(ay - by) < ROW_TOLERANCE)
{
return (ax > bx) ? -1 : ((ax < bx) ? 1 : zOrder);
}
else
{
return (ay < by) ? -1 : 1;
}
}
}
else
{ // !horizontal
if (leftToRight)
{
// TL - Mongolian
if (Math.abs(ax - bx) < ROW_TOLERANCE)
{
return (ay < by) ? -1 : ((ay > by) ? 1 : zOrder);
}
else
{
return (ax < bx) ? -1 : 1;
}
}
else
{ // !leftToRight
// TR - Japanese, Chinese, Korean
if (Math.abs(ax - bx) < ROW_TOLERANCE)
{
return (ay < by) ? -1 : ((ay > by) ? 1 : zOrder);
}
else
{
return (ax > bx) ? -1 : 1;
}
}
}
}
}
}

I just ran into the same error and spent a good amount of time tracking it down. To help others who run into this error it is important to know how to test TimSort. The checks that violate the transitivity contract and throw this error are deep in the algorithm and require a test to meet certain criteria before this problem can be reproduced.
Create a list with 32 or more objects.
Within that list, there needs to two or more runs.
Each run must contain 3 or more objects.
Once you meet those two criteria you can begin testing for this failure.
A run is defined as a sub-set of the list where each item is already in the desired ordered state.

It is not enough to patch LayoutComparator as suggerested above. This fix does not work in my case.
The issue was fixed in JDK 8 (8u45 at least).
SortingFocusTraversalPolicy to use legacy Merge Sort Method.

There is nothing wrong with the JDK.
I was facing the same issue since 2 days & finally got to know that bug was with my date-format.
In my API response few dates were in "dd-MM-yyyy HH:mm" format while few of them were in "dd/MM/yyyy HH:mm" format.
Same issue while comparing integers, May be your List is having some null values.
Here is my code, which is working like a charm
Collections.sort(root_array, new Comparator<RootResponseItem>(){
public int compare(RootResponseItem o1, RootResponseItem o2){
Date date1 = new Date();
String dtStart = o1.getSectors().get(0).getDeparture().getDate() + " " + o1.getSectors().get(0).getDeparture().getTime();
dtStart = dtStart.replaceAll("-","/");
SimpleDateFormat format = new SimpleDateFormat("dd/MM/yyyy HH:mm");
try {
date1 = format.parse(dtStart);
} catch (ParseException e) {
e.printStackTrace();
}
Date date2 = new Date();
String dtStart2 = o2.getSectors().get(0).getDeparture().getDate() + " " + o2.getSectors().get(0).getDeparture().getTime();
dtStart2 = dtStart2.replaceAll("-","/");
SimpleDateFormat format2 = new SimpleDateFormat("dd/MM/yyyy HH:mm");
try {
date2 = format2.parse(dtStart2);
} catch (ParseException e) {
e.printStackTrace();
}
return date1.compareTo(date2);
}
});

Unknown pdx type=4

My distributed geode system went just well before, but recently not, and I don't know whether it's relevant to the company's power-cut last night. It seems all geode data persisted before can not be deserialize back now.
here's the error information:
Caused by: java.lang.IllegalStateException: Unknown pdx type=4
at com.gemstone.gemfire.internal.InternalDataSerializer.readPdxSerializable(InternalDataSerializer.java:3162)
at com.gemstone.gemfire.internal.InternalDataSerializer.basicReadObject(InternalDataSerializer.java:2979)
at com.gemstone.gemfire.DataSerializer.readObject(DataSerializer.java:3210)
at com.gemstone.gemfire.internal.util.BlobHelper.deserializeBlob(BlobHelper.java:101)
at com.gemstone.gemfire.internal.cache.EntryEventImpl.deserialize(EntryEventImpl.java:1554)
at com.gemstone.gemfire.internal.cache.EntryEventImpl.deserialize(EntryEventImpl.java:1546)
at com.gemstone.gemfire.internal.cache.PreferBytesCachedDeserializable.getDeserializedValue(PreferBytesCachedDeserializable.java:67)
at com.gemstone.gemfire.internal.cache.EntryEventImpl.getOldValue(EntryEventImpl.java:723)
at com.gemstone.gemfire.internal.cache.LocalRegion.validatedDestroy(LocalRegion.java:1146)
at com.gemstone.gemfire.internal.cache.LocalRegion.destroy(LocalRegion.java:1130)
at com.gemstone.gemfire.internal.cache.AbstractRegion.destroy(AbstractRegion.java:315)
at com.gemstone.gemfire.internal.cache.LocalRegion.remove(LocalRegion.java:9372)
at com.igola.datahub.wwl.geode.WWLResultsDAO.removeByKey(WWLResultsDAO.java:276)
my project was build on play framework and my configuration of geode cache and region is like this:
cache.setIsServer(true);
diskStorage = configuration.getString("geode.storage.name");
String fileStorage = configuration.getString("geode.storage.path");
cache.createDiskStoreFactory()
.setDiskDirs(new File[]{new File(fileStorage)})
.setDiskUsageWarningPercentage(0.8f)
.setAutoCompact(true)
.create(diskStorage);
geodeCache.getCache()
.<DataKey, When2GoData>createRegionFactory(PARTITION_REDUNDANT_PERSISTENT_OVERFLOW)
.setStatisticsEnabled(true)
.setEntryIdleTimeout(new ExpirationAttributes(TIMEOUT_LONG, ExpirationAction.DESTROY))
.setDiskStoreName(geodeCache.getDiskStorage())
.setPartitionAttributes(new PartitionAttributesFactory<>()
.setRedundantCopies(REDUNDANT_COPIES)
.setPartitionResolver(new DataKey())
.create())
.create("xxx");
cache = new CacheFactory()
.set("locators", configuration.getString("geode.locator"))
.set("name", configuration.getString("geode.name")+ "-"+ uuid)
.set("mcast-port", "0")
.set("log-level", "error")
.setPdxPersistent(true)
.setPdxReadSerialized(true)
.create();

Here's the relevant code from the readPdxSerializable method:
PdxType pdxType = gfc.getPdxRegistry().getType(typeId);
if (logger.isTraceEnabled(LogMarker.SERIALIZER)) {
logger.trace(LogMarker.SERIALIZER, "readPdxSerializable pdxType={}", pdxType);
}
if (pdxType == null) {
throw new IllegalStateException("Unknown pdx type=" + typeId);
}
So it looks like you have something in your cache that you can no longer deserialize ... due (I think) the fact that the type is no longer registered in the type registry.

how to validate all preflight error for PDF/A-1a in pdfbox

i am working with vaildate PDFA/1A .I followed this code which already exist in this link PDFbox Preflight PDF/A-1b check not working properly in java version 1.8
public class test
{
public static void main(final String[] args) throws Exception
{
File pdfa=new File("D:/DMC-B787-A-00-40-07-00A-008B-D.pdf"); // error pdf
isPDFAdocument(pdfa);
System.out.println("sucess");
}
private static void isPDFAdocument(File pdfa)
{
ValidationResult result = null;
PreflightParser parser;
try
{
parser = new PreflightParser(pdfa);
parser.parse(Format.PDF_A1A);
PreflightDocument documentt = parser.getPreflightDocument();
result = documentt.getResult();
System.out.println("result"+result);
documentt.close();
}
catch (SyntaxValidationException e)
{
result = e.getResult();
}
catch (IOException e)
{
e.printStackTrace();
}
if (result.isValid())
{
System.out.println("The file " + pdfa + " is a valid PDF/A-1a file");
}
else
{
System.out.println("The file" + pdfa + " is not valid, error(s) :");
for (ValidationError error : result.getErrorsList())
{
System.out.println(error.getErrorCode() + " : " + error.getDetails());
}
}
it's not checking the error which mention below .if there it have to show exception but still its vaildate success.
Kindly suggest how to validate all probability preflight error below .how to check it in pdfbox.
Error
CharSet incomplete for Type 1 font (2 matches on 1 page) - 2
Width information for rendered glyphs is inconsistent (2 matches on 1 page) - 2
Document information
File name: "DMC-B787-A-00-40-07-00A-008B-D.pdf"
Path: "C:\Users\wm751e\Documents\Feb19\Synchronize print\Only WDM\Archived doctypes
latest\EA_TBC2016-02-2115.57.49IPD\EA_TBC2016-02-2115.57.49IPD\00"
PDF version number: "1.4"
File size (KB): 114.2
Title: "Illustrated Parts Data - Service Bulletin/Modification List"
Author: "The Boeing Company (PRINTENGINEWEB_BUILD_1.7.49.5.0.0; s1000d_merged_v6.5.36_4.xsl; JobID:)"
Creator: "AH XSL Formatter V6.0 MR7 for Linux64 : 6.0.8.9416 (2013/02/26 10:36JST)"
Producer: "Antenna House PDF Output Library 6.0.389 (Linux64)"
Created: "2/21/2016 3:56 PM"
Modified: "2/21/2016 3:56 PM"
Trapping: "False"
Number of plates: 4
Names of plates: "(Cyan) (Magenta) (Yellow) (Black) "
Environment
Preflight, 15.0.0 (151)
Acrobat version: 15.60
Operating system: Microsoft Windows 7 Service Pack 1 (Build 7601

J2ME obfuscated app stacktrace

I'm debugging J2ME (written in eclipse) code on nokia N95 (wasn't written by me) trying to find error and printing out stacktrace gave me this:
03:08:479 TSKR. Error:
java.lang.NullPointerException: 0
- java.lang.String.<init>(), bci=6
- v.b(), bci=9
- v.e(), bci=805
- v.e(), bci=3
Could anyone please help me to understand that? Which line , where to look for and is there a way to understand it or at least get some valuable and usefull information.
Thank you
UPDATE
Sorry.. Here's the function that throws error:
public void bluetoothFileProcessBytes(){//--------tracing out of memory error
try{
partCurrentLoop++;
fileCurrentLoop++;
debug("Loop " + fileCurrentLoop + " of " + fileTotalLoops);
bluetoothUpdateBytes(fileDataString.length());
guiUpdateProgressBar(true, partCurrentLoop, partTotalLoops);
// LOOP Step 2: If there is no byte[] created for storing the bytes, create it.
if (fileBytesIsEmpty) {
if (partCurrentNumber == partTotalNumber)
{
fileBytes = new byte[fileSize % (loopsPerHttpComm * BYTES_PER_LOOP)];
}
else fileBytes = new byte[loopsPerHttpComm * BYTES_PER_LOOP];
}
fileBytesIsEmpty = false;
//LOOP Step 3: fill in the byte array with data from StringBuffer
for (int i = 0; i < fileDataString.length(); i++)
{
j = i + (partCurrentLoop - 1) * BYTES_PER_LOOP;
c = fileDataString.charAt(i);
fileBytes[j] = (byte) c;
}
c=0;
j=0;
i=0;
//LOOP Step 4: Send the email if the byte array is full with a new HttpComm Thread
if ((fileCurrentLoop % loopsPerHttpComm == 0
|| fileCurrentLoop == fileTotalLoops) && checkHttpCommStatus()) {
// update partName and httpCommStatus
String partName = fileName + " .part " + partCurrentNumber;
httpCommStatus = HTTP_RUNNING;
if (fileCurrentLoop == fileTotalLoops) { // FILE_END
debug("New HttpComm Thread: FILE END");
httpCommUpdateBytes(fileBytes.length);//<===================remove
httpCommSucceeded();//<====================================remove
/*new Thread(new HttpFileEnd(this, fileBytes, toAddress, fromAddress, fromName, digidownMAC, partName, fileName, fileSize, digidownSoftwareVersion, partCurrentNumber, //<===============uncomment
partTotalNumber, DigidownApp.textObject.getActiveLanguage())).start();*/
} else { // FILE_PART
//debug("Step 5");//<--------------------------------------------------------------------------------<-remove
debug("New HttpComm Thread: FILE PART: " + partName);
debug(">>>>>SEEEENDIIIING!<<<<<<<<");//<===========remove
httpCommUpdateBytes(fileBytes.length);//<================remove
httpCommSucceeded();//<==============================remove
/*new Thread(new HttpFilePart(this, fileBytes, toAddress, fromAddress, fromName,//<===============uncomment
digidownMAC, partName, fileSize, digidownSoftwareVersion,
partCurrentNumber, DigidownApp.textObject.getActiveLanguage())).start();*/
// Updating the new partTotalLoops
if (partCurrentNumber == partTotalNumber){
partTotalLoops = fileTotalLoops - (loopsPerHttpComm * (partCurrentNumber - 1));
} else partTotalLoops = loopsPerHttpComm;
partCurrentNumber++;
partCurrentLoop = 0;
}
fileBytesIsEmpty = true;
}
// Leave the loop if failed
if (!errorHandlerActivated) {
if (fileCurrentLoop < fileTotalLoops)
{
try{
bluetoothIOStream.getFileBytes();//-throws null pointer exception !
}catch(RuntimeException ea){debug("Wammaaa!!! " + ea.toString());
ea.printStackTrace();}
}
else if(fileCurrentLoop == fileTotalLoops && checkHttpCommStatus())
{ bluetoothIOStream.getFileEnd(); }
}
}
catch(RuntimeException e1)
{
Alert alert = new Alert("Fckn error!", e1.toString(), null, null);
alert.setTimeout(Alert.FOREVER);
debug("Error:");
System.err.println();
e1.printStackTrace();
//throw e1;
}
}
..and the stack trace of unobfuscated app; this time it was null pointer exception after
// Leave the loop if failed:
02:57:382 TSKR. Loop 972 of 1349
02:57:383 BIOS. Rec 978
02:57:588 TSKR. Loop 973 of 1349
02:57:590 BIOS. Rec 979
02:57:815 TSKR. Wammaaa!!! java.lang.NullPointerException: 0
java.lang.NullPointerException: 0
- java.lang.String.<init>(), bci=6
- net.digidown.m.digidown.bluetooth.BluetoothIOStream.readLineAsString(), bci=9
- net.digidown.m.digidown.bluetooth.BluetoothIOStream.getVariable(), bci=844
- net.digidown.m.digidown.bluetooth.BluetoothIOStream.getFileBytes(), bci=3
- net.digidown.m.digidown.TaskRunner.bluetoothFileProcessBytes(), bci=430
- net.digidown.m.digidown.bluetooth.BluetoothIOStream.getVariable(), bci=857
- net.digidown.m.digidown.bluetooth.BluetoothIOStream.getFileBytes(), bci=3
- net.digidown.m.digidown.TaskRunner.bluetoothFileProcessBytes(), bci=430
- net.digidown.m.digidown.bluetooth.BluetoothIOStream.getVariable(), bci=857
- net.digidown.m.digidown.bluetooth.BluetoothIOStream.getFileBytes(), bci=3
- net.digidown.m.digidown.TaskRunner.bluetoothFileProcessBytes(), bci=430
- net.digidown.m.digidown.bluetooth.BluetoothIOStream.getVariable(), bci=857
- net.digidown.m.digidown.bluetooth.BluetoothIOStream.getFileBytes(), bci=3
- net.digidown.m.digidown.TaskRunner.bluetoothFileProcessBytes(), bci=430
- net.digidown.m.digidown.bluetooth.BluetoothIOStream.getVariable(), bci=857
Goes like that for a while and then..:
- net.digidown.m.digidown.TaskRunner.bluetoothDoCommand_file(), bci=227
- net.digidown.m.digidown.bluetooth.BluetoothIOStream.getVariable(), bci=829
- net.digidown.m.digidown.bluetooth.BluetoothIOStream.getFileSettings(), bci=9
- net.digidown.m.digidown.TaskRunner.bluetoothTask(), bci=90
- net.digidown.m.digidown.bluetooth.BluetoothIOStream.getVariable(), bci=513
- net.digidown.m.digidown.bluetooth.BluetoothIOStream.getTask(), bci=2
- net.digidown.m.digidown.TaskRunner.bluetoothTask(), bci=172
- net.digidown.m.digidown.bluetooth.BluetoothIOStream.getVariable(), bci=513
- net.digidown.m.digidown.bluetooth.BluetoothIOStream.getTask(), bci=2
- net.digidown.m.digidown.TaskRunner.bluetoothConnected(), bci=89
- net.digidown.m.digidown.bluetooth.BluetoothIOStream.getVariable(), bci=444
- net.digidown.m.digidown.bluetooth.BluetoothIOStream.getVariable(), bci=426
- net.digidown.m.digidown.bluetooth.BluetoothIOStream.run(), bci=366
- java.lang.Thread.run(), bci=11
03:01:211 TSKR. Finished Task
03:01:212 BIOS. Rec 6
03:01:356 BIOS. task = >
03:01:357 TSKR. :: Got Task: (0x3e)
03:01:358 TSKR.
03:01:359 TSKR. ERROR HANDLER: 116 - Bluetooth communication error
03:01:389 BIOS. Initiated
03:01:389 BIOS. About to read
03:01:394 BIOS. Phone(InitiateDigidownError) received: '0x3e 0xea Data CK'
03:01:397 BIOS. About to writeLine 'error'
03:01:468 BIOS. quitStatus = QUIT_STATUS

Your problem seems to be obfuscation.
The build process of your eclipse application probably uses a tool like proguard to increase the performance and decrease the size of the application .jar file that will be deployed in the field.
One of the thing obfuscation does is rewrite class and method names into much smaller names, hence the completely unintelligible last 3 lines of your stack trace.
You need to produce an unobfuscated .jar file to use when you want to debug your application.
(at least until you find an issue that only happens on the obfuscated version of your application. it happens)
Eclipse should allow you to turn obfuscation off (or reduce it to its lowest level) by modifying your project properties. Failing that, manually and temporarily hacking the ant .xml files used to build your .jar file will do the trick.
Obfuscation parameters should include the name of your MIDlet class so that its startApp() method is not renamed.

Your problem may be solve in two ways:
Run your application without obfuscation. So the output shows exact method names.
Put System.out.println('method_name::sample_tag') in your method and lines that the problem may be from them. Then in the output you can trace your execution and you can find the point that the problem occurs.

How can I update Websphere 7 to use EL2.2?

This is what I have done:
Following this post from Lincoln Baxter I downloaded el-api-2.2.jar and el-impl-2.2.jar
Then created isolated shard library and added them there.
We are using Myfaces so in web.xml added this bit
<context-param>
<param-name>org.apache.myfaces.EXPRESSION_FACTORY</param-name>
<param-value>com.sun.el.ExpressionFactoryImpl</param-value>
</context-param>
This is the issue:
I do not think it getting picked up and application is still using one out the the box apache based.
Caused by: javax.el.ELException: Error Parsing: #{testBean.testel2('hello')}
at org.apache.el.lang.ExpressionBuilder.createNodeInternal(ExpressionBuilder.java:129)
at org.apache.el.lang.ExpressionBuilder.build(ExpressionBuilder.java:150)
at org.apache.el.lang.ExpressionBuilder.createMethodExpression(ExpressionBuilder.java:201)
at org.apache.el.ExpressionFactoryImpl.createMethodExpression(ExpressionFactoryImpl.java:56)
at org.apache.myfaces.view.facelets.tag.TagAttributeImpl.getMethodExpression(TagAttributeImpl.java:219)
at org.apache.myfaces.view.facelets.tag.jsf.ActionSourceRule$ActionMapper2.applyMetadata(ActionSourceRule.java:73)
at org.apache.myfaces.view.facelets.tag.MetadataImpl.applyMetadata(MetadataImpl.java:45)
at javax.faces.view.facelets.MetaTagHandler.setAttributes(MetaTagHandler.java:68)
at javax.faces.view.facelets.DelegatingMetaTagHandler.setAttributes(DelegatingMetaTagHandler.java:93)
at org.richfaces.view.facelets.html.BehaviorsAddingComponentHandlerWrapper.setAttributes(BehaviorsAddingComponentHandlerWrapper.java:115)
at org.apache.myfaces.view.facelets.tag.jsf.ComponentTagHandlerDelegate.apply(ComponentTagHandlerDelegate.java:269)
at javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:54)
at javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:51)
at javax.faces.view.facelets.DelegatingMetaTagHandler.applyNextHandler(DelegatingMetaTagHandler.java:59)
at org.richfaces.view.facelets.html.BehaviorsAddingComponentHandlerWrapper.applyNextHandler(BehaviorsAddingComponentHandlerWrapper.java:55)
at org.apache.myfaces.view.facelets.tag.jsf.ComponentTagHandlerDelegate.apply(ComponentTagHandlerDelegate.java:324)
at javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:54)
at javax.faces.view.facelets.DelegatingMetaTagHandler.applyNextHandler(DelegatingMetaTagHandler.java:59)
at org.richfaces.view.facelets.html.BehaviorsAddingComponentHandlerWrapper.applyNextHandler(BehaviorsAddingComponentHandlerWrapper.java:55)
at org.apache.myfaces.view.facelets.tag.jsf.ComponentTagHandlerDelegate.apply(ComponentTagHandlerDelegate.java:324)
at javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:54)
at javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:51)
at org.apache.myfaces.view.facelets.tag.ui.DefineHandler.applyDefinition(DefineHandler.java:86)
at org.apache.myfaces.view.facelets.tag.ui.CompositionHandler.apply(CompositionHandler.java:167)
at org.apache.myfaces.view.facelets.impl.TemplateContextImpl$TemplateManagerImpl.apply(TemplateContextImpl.java:128)
at org.apache.myfaces.view.facelets.impl.TemplateContextImpl.includeDefinition(TemplateContextImpl.java:92)
at org.apache.myfaces.view.facelets.impl.DefaultFaceletContext.includeDefinition(DefaultFaceletContext.java:433)
at org.apache.myfaces.view.facelets.tag.ui.InsertHandler.apply(InsertHandler.java:93)
at javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:51)
at org.apache.myfaces.view.facelets.compiler.NamespaceHandler.apply(NamespaceHandler.java:57)
at javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:51)
at org.apache.myfaces.view.facelets.compiler.EncodingHandler.apply(EncodingHandler.java:45)
at org.apache.myfaces.view.facelets.impl.DefaultFacelet.include(DefaultFacelet.java:322)
at org.apache.myfaces.view.facelets.impl.DefaultFacelet.include(DefaultFacelet.java:369)
at org.apache.myfaces.view.facelets.impl.DefaultFacelet.include(DefaultFacelet.java:347)
at org.apache.myfaces.view.facelets.impl.DefaultFaceletContext.includeFacelet(DefaultFaceletContext.java:215)
at org.apache.myfaces.view.facelets.tag.ui.CompositionHandler.apply(CompositionHandler.java:140)
at org.apache.myfaces.view.facelets.compiler.NamespaceHandler.apply(NamespaceHandler.java:57)
at org.apache.myfaces.view.facelets.compiler.EncodingHandler.apply(EncodingHandler.java:45)
at org.apache.myfaces.view.facelets.impl.DefaultFacelet.apply(DefaultFacelet.java:143)
at org.apache.myfaces.view.facelets.FaceletViewDeclarationLanguage.buildView(FaceletViewDeclarationLanguage.java:363)
at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:66)
at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:239)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:191)
... 31 more
Caused by: org.apache.el.parser.ParseException: Encountered "(" at line 1, column 26.
Was expecting one of:
"}" ...
"." ...
"[" ...
">" ...
"gt" ...
"<" ...
"lt" ...
">=" ...
"ge" ...
"<=" ...
"le" ...
"==" ...
"eq" ...
"!=" ...
"ne" ...
"&&" ...
"and" ...
"||" ...
"or" ...
"*" ...
"+" ...
"-" ...
"/" ...
"div" ...
"%" ...
"mod" ...
at org.apache.el.parser.ELParser.generateParseException(ELParser.java:2142)
at org.apache.el.parser.ELParser.jj_consume_token(ELParser.java:2024)
at org.apache.el.parser.ELParser.DeferredExpression(ELParser.java:113)
at org.apache.el.parser.ELParser.CompositeExpression(ELParser.java:40)
at org.apache.el.lang.ExpressionBuilder.createNodeInternal(ExpressionBuilder.java:97)
Update: I tried to use JBoss EL instead and I notice this line
[13/02/12 15:19:06:113 EST] 00000029 ExternalSpeci I MyFaces Unified EL support disabled
in the log and that led me to this code
Copied from source of myfaces-impl-2.1.6
package org.apache.myfaces.util;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.el.ELContext;
/**
* <p>
* Utility class for determining which specifications are available
* in the current process. See JIRA issue: http://issues.apache.org/jira/browse/MYFACES-2386
* </p>
*
* #author Jan-Kees van Andel
* #author Jakob Korherr (latest modification by $Author: lu4242 $)
* #version $Revision: 963000 $ $Date: 2010-07-11 01:54:18 -0500 (Sun, 11 Jul 2010) $
* #since 2.0
*/
public final class ExternalSpecifications
{
//private static final Log log = LogFactory.getLog(BeanValidator.class);
private static final Logger log = Logger.getLogger(ExternalSpecifications.class.getName());
private static volatile Boolean beanValidationAvailable;
private static volatile Boolean unifiedELAvailable;
//Removed code from here before posting on Stack Overflow
//Relevant method is below
/**
* This method determines if Unified EL is present.
*
* Eager initialization is used for performance. This means Unified EL binaries
* should not be added at runtime after this variable has been set.
* #return true if UEL is available, false otherwise.
*/
public static boolean isUnifiedELAvailable()
{
if (unifiedELAvailable == null)
{
try
{
// Check if the UEL classes are available.
// If the JSP EL classes are loaded first, UEL will not work
// properly, hence it will be disabled.
unifiedELAvailable = (
Class.forName("javax.el.ValueReference") != null
&& Class.forName("javax.el.ValueExpression")
.getMethod("getValueReference", ELContext.class) != null
);
}
catch (Throwable t)
{
//log.log(Level.FINE, "Error loading class (could be normal)", t);
unifiedELAvailable = false;
}
log.info("MyFaces Unified EL support " + (unifiedELAvailable ? "enabled" : "disabled"));
}
return unifiedELAvailable;
}
/**
* this class should not be instantiated.
*/
private ExternalSpecifications()
{
}
}
try block throws exception on both checks when inspecting and during executing as expected goes to catch and that results in a false being returned. I believe due to this it falls back to EL provided by WebSphere and not JBoss EL.