Develop Reference

in java catch can't catch exception with jsoup

I want to parse a website with jsoup, and it succeeded to get the detail what I want, but I still get many many exceptions and not in catch
public static void main(String[] argv)
{
getGoogle();
}
private static void getGoogle() {
String url = "http://google.com";
Document doc = null;
try {
doc = Jsoup.connect(url).get();
Element body = doc.body();
}catch (Exception e) {
System.out.println("------------google------------");
System.out.println("getGoogle:" + e.getMessage());
}
}
when I use debug mode found it was because doc = Jsoup.connect(url).get(); this line, but it looks ok after I search much info, below is exceptions I got
Could not instrument class com/sun/deploy/security/MozillaJSSProvider: java.lang.IllegalArgumentException
at org.eclipse.jdt.launching.internal.org.objectweb.asm.ClassReader.<init>(Unknown Source)
at org.eclipse.jdt.launching.internal.weaving.ClassfileTransformer.transform(ClassfileTransformer.java:25)
at org.eclipse.jdt.launching.internal.javaagent.Premain$1.transform(Premain.java:51)
at java.instrument/java.lang.instrument.ClassFileTransformer.transform(ClassFileTransformer.java:246)
at java.instrument/sun.instrument.TransformerManager.transform(TransformerManager.java:188)
at java.instrument/sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:550)
at java.base/java.lang.ClassLoader.defineClass2(Native Method)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1099)
at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:206)
at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:760)
at java.base/jdk.internal.loader.BuiltinClassLoader.findClassInModuleOrNull(BuiltinClassLoader.java:681)
at java.base/jdk.internal.loader.BuiltinClassLoader.findClass(BuiltinClassLoader.java:562)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:608)
at java.base/java.lang.Class.forName(Class.java:448)
at java.base/java.util.ServiceLoader.loadProvider(ServiceLoader.java:847)
at java.base/java.util.ServiceLoader.access$600(ServiceLoader.java:390)
at java.base/java.util.ServiceLoader$ModuleServicesLookupIterator.hasNext(ServiceLoader.java:1071)
at java.base/java.util.ServiceLoader$2.hasNext(ServiceLoader.java:1294)
at java.base/java.util.ServiceLoader$3.hasNext(ServiceLoader.java:1379)
at java.base/sun.security.jca.ProviderConfig$ProviderLoader.load(ProviderConfig.java:334)
at java.base/sun.security.jca.ProviderConfig$3.run(ProviderConfig.java:244)
at java.base/sun.security.jca.ProviderConfig$3.run(ProviderConfig.java:238)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.base/sun.security.jca.ProviderConfig.doLoadProvider(ProviderConfig.java:238)
at java.base/sun.security.jca.ProviderConfig.getProvider(ProviderConfig.java:218)
at java.base/sun.security.jca.ProviderList.getProvider(ProviderList.java:266)
at java.base/sun.security.jca.ProviderList.getIndex(ProviderList.java:296)
at java.base/sun.security.jca.ProviderList.getProviderConfig(ProviderList.java:280)
at java.base/sun.security.jca.ProviderList.getProvider(ProviderList.java:286)
at java.base/java.security.Security.getProvider(Security.java:470)
at java.base/sun.security.ssl.SignatureAndHashAlgorithm.<clinit>(SignatureAndHashAlgorithm.java:415)
at java.base/sun.security.ssl.SSLSessionImpl.<init>(SSLSessionImpl.java:182)
at java.base/sun.security.ssl.SSLSessionImpl.<init>(SSLSessionImpl.java:150)
at java.base/sun.security.ssl.SSLSessionImpl.<clinit>(SSLSessionImpl.java:79)
at java.base/sun.security.ssl.SSLSocketImpl.init(SSLSocketImpl.java:596)
at java.base/sun.security.ssl.SSLSocketImpl.<init>(SSLSocketImpl.java:534)
at java.base/sun.security.ssl.SSLSocketFactoryImpl.createSocket(SSLSocketFactoryImpl.java:72)
at java.base/sun.net.www.protocol.https.HttpsClient.createSocket(HttpsClient.java:413)
at java.base/sun.net.NetworkClient.doConnect(NetworkClient.java:162)
at java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:474)
at java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:569)
at java.base/sun.net.www.protocol.https.HttpsClient.<init>(HttpsClient.java:265)
at java.base/sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:372)
at java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:191)
at java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1181)
at java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1075)
at java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:177)
at java.base/sun.net.www.protocol.https.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:163)
at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:651)
at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:676)
at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:676)
at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:628)
at org.jsoup.helper.HttpConnection.execute(HttpConnection.java:260)
at org.jsoup.helper.HttpConnection.get(HttpConnection.java:249)
at test3.test3.getGoogle(test3.java:23)
at test3.test3.main(test3.java:12)
Could not instrument class com/sun/deploy/security/MozillaJSSProvider$ProviderService: java.lang.IllegalArgumentException
at org.eclipse.jdt.launching.internal.org.objectweb.asm.ClassReader.<init>(Unknown Source)
at org.eclipse.jdt.launching.internal.weaving.ClassfileTransformer.transform(ClassfileTransformer.java:25)
Could not instrument class com/sun/deploy/security/MozillaJSSProvider$ProviderService: java.lang.IllegalArgumentException
at org.eclipse.jdt.launching.internal.org.objectweb.asm.ClassReader.<init>(Unknown Source)
at org.eclipse.jdt.launching.internal.weaving.ClassfileTransformer.transform(ClassfileTransformer.java:25)
Could not instrument class sun/security/pkcs11/SunPKCS11: java.lang.IllegalArgumentException
at org.eclipse.jdt.launching.internal.org.objectweb.asm.ClassReader.<init>(Unknown Source)
at org.eclipse.jdt.launching.internal.weaving.ClassfileTransformer.transform(ClassfileTransformer.java:25)
Could not instrument class sun/security/pkcs11/wrapper/PKCS11Exception: java.lang.IllegalArgumentException
at org.eclipse.jdt.launching.internal.org.objectweb.asm.ClassReader.<init>(Unknown Source)
at org.eclipse.jdt.launching.internal.weaving.ClassfileTransformer.transform(ClassfileTransformer.java:25)
Could not instrument class sun/security/pkcs11/SunPKCS11$Descriptor: java.lang.IllegalArgumentException
at org.eclipse.jdt.launching.internal.org.objectweb.asm.ClassReader.<init>(Unknown Source)
at org.eclipse.jdt.launching.internal.weaving.ClassfileTransformer.transform(ClassfileTransformer.java:25)
Could not instrument class com/sun/security/sasl/gsskerb/JdkSASL: java.lang.IllegalArgumentException
at org.eclipse.jdt.launching.internal.org.objectweb.asm.ClassReader.<init>(Unknown Source)
at org.eclipse.jdt.launching.internal.weaving.ClassfileTransformer.transform(ClassfileTransformer.java:25)
at org.eclipse.jdt.launching.internal.javaagent.Premain$1.transform(Premain.java:51)
Could not instrument class com/sun/security/sasl/gsskerb/JdkSASL$1: java.lang.IllegalArgumentException
at org.eclipse.jdt.launching.internal.org.objectweb.asm.ClassReader.<init>(Unknown Source)
at org.eclipse.jdt.launching.internal.weaving.ClassfileTransformer.transform(ClassfileTransformer.java:25)
at org.eclipse.jdt.launching.internal.javaagent.Premain$1.transform(Premain.java:51)
and more more exceptions.....and all not catch by try...catch

It is an eclipse bug, you can find the discussion here
Also, this has been raised in SO as well, this (https://stackoverflow.com/a/47109099/6039974) answer might help you.

Java Download massive file giving Connection Shutdown/Reset on internet url after sometime

I am building a swing application to download multiple files over the internet and save to a windows fileshare. I have used SwingWroker which internally uses the ExecutorService which internally queues them and downloads 10 at a time, but for some reason after downloading say 2 - 3 MB of file it stops and moves to next downloading file, They are downloaded in a batch of 10 as SwingWorker has fixed it in number of Threads for the Executor Service.
I have to write these files in a windows file share and I am using nio.FileChannels to do that. There are files ranging from 50-60 each weighing around 300MB - 500MB. The file links are located on a webpage to where I get to by login in using credentials on a login page(with a post request) over the internet before that I specify CookieHandler.setDefault(new CookieManager()) at the beginning and so it behaves like a browser to me.
Another observation is when I download them locally (not to a windows server share) they do work fine.
This is the code I am using
import java.io.File;
import java.io.FileOutputStream;
import java.net.URL;
import java.net.URLConnection;
import java.nio.channels.Channels;
import java.nio.channels.FileChannel;
import java.nio.channels.ReadableByteChannel;
import javax.swing.SwingWorker;
public class DownloadProcess extends SwingWorker<Boolean, String> {
private String urlPath, filePath;
public DownloadProcess(String urlPath, String filePath){
this.urlPath = urlPath;
this.filePath = filePath;
}
#Override
protected Boolean doInBackground() {
boolean taskState = true;
URLConnection httpConn = null;
ReadableByteChannel readableByteChannel = null;
FileOutputStream fileOutputStream = null;
FileChannel fileOutputChannel = null;
try{
//String filePath = "\\\\fileshare.server\\xyz.txt";
//String urlPath = "http://example.com/anyBigFile.1GB.docx";
File localFile = new File(filePath);//File share
boolean itsThere = localFile!=null && localFile.exists();
long done = itsThere ? localFile.length() : 0;
URL url = new URL(urlPath);
httpConn = url.openConnection();
httpConn.setRequestProperty("Connection", "keep-alive");
if(itsThere) {
httpConn.setRequestProperty("Range","bytes="+done+"-");
}
readableByteChannel = Channels.newChannel(httpConn.getInputStream());
fileOutputStream = itsThere ? new FileOutputStream(filePath) : new FileOutputStream(filePath,true);
fileOutputChannel = fileOutputStream.getChannel();
for (long position = done, size = httpConn.getContentLength(); position < size && !isCancelled(); ) {
position += fileOutputChannel.transferFrom(readableByteChannel, position, 1 << 16);
}
//done
}catch(Exception e){
taskState = false;
e.printStackTrace();
}finally{
//close streams conns etc
}
return taskState;
}
}
This is the error stack trace that I get after 5 - 10 mins of download
/*
javax.net.ssl.SSLException: Connection has been shutdown: javax.net.ssl.SSLException: java.net.SocketException: Connection reset
at sun.security.ssl.SSLSocketImpl.checkEOF(Unknown Source)
at sun.security.ssl.AppInputStream.read(Unknown Source)
at java.io.BufferedInputStream.read1(Unknown Source)
at java.io.BufferedInputStream.read(Unknown Source)
at sun.net.www.MeteredStream.read(Unknown Source)
at java.io.FilterInputStream.read(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection$HttpInputStream.read(Unknown Source)
at java.nio.channels.Channels$ReadableByteChannelImpl.read(Unknown Source)
at com.objects.DownloadByteChannel.read(DownloadByteChannel.java:117)
at sun.nio.ch.FileChannelImpl.transferFromArbitraryChannel(Unknown Source)
at sun.nio.ch.FileChannelImpl.transferFrom(Unknown Source)
at com.core.DownloadTask.doInBackground(DownloadTask.java:154)
at com.core.DownloadTask.doInBackground(DownloadTask.java:59)
at com.util.ZSwingWorker$1.call(ZSwingWorker.java:286)
at java.util.concurrent.FutureTask.run(Unknown Source)
at com.util.ZSwingWorker.run(ZSwingWorker.java:325)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: javax.net.ssl.SSLException: java.net.SocketException: Connection reset
at sun.security.ssl.Alerts.getSSLException(Unknown Source)
at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
at sun.security.ssl.SSLSocketImpl.handleException(Unknown Source)
at sun.security.ssl.SSLSocketImpl.handleException(Unknown Source)
... 18 more
Caused by: java.net.SocketException: Connection reset
at java.net.SocketInputStream.read(Unknown Source)
at java.net.SocketInputStream.read(Unknown Source)
at sun.security.ssl.InputRecord.readFully(Unknown Source)
at sun.security.ssl.InputRecord.read(Unknown Source)
at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
at sun.security.ssl.SSLSocketImpl.readDataRecord(Unknown Source)
... 18 more
*/
Usage:
public static void main(String[] args){
int counter = 1;
for(String url: urls){
new DownloadProcess(url,"\\\\fileshare.server\\xyz"+(counter++)+".txt").execute();
}
}

You are going to have to change your connection timeout serverside. I picked up a few links along the way if they are of any importance:
Modify Session Security settings
Lengthening salesforce session timeout
Hope this helps, good luck and let me know :)

Connection Reset means the remote side is closing the connection with a TCP RST (reset) packet. You need to find out what the remote side isn't liking and fix it.
If the remote side is Apache maybe you are running into the KeepAliveTimeout value. By default that is 5 seconds. It really sounds like you are running into some sort of configured limit on the remote side. When that happens the server is kicking you off with a reset.

IOException Loading Data into BlazegraphEmbedded

I'm having an issue loading my Blazegraph properties file into an embedded instance. When I try to import my .properties file into my Java class, I get the following error:
Exception in thread "main" java.io.IOException: Stream closed
at java.io.BufferedInputStream.getInIfOpen(Unknown Source)
at java.io.BufferedInputStream.read1(Unknown Source)
at java.io.BufferedInputStream.read(Unknown Source)
at sun.nio.cs.StreamDecoder.readBytes(Unknown Source)
at sun.nio.cs.StreamDecoder.implRead(Unknown Source)
at sun.nio.cs.StreamDecoder.read(Unknown Source)
at java.io.InputStreamReader.read(Unknown Source)
at java.io.Reader.read(Unknown Source)
at java.util.Properties$LineReader.readLine(Unknown Source)
at java.util.Properties.load0(Unknown Source)
at java.util.Properties.load(Unknown Source)
at blazegraph_tinkerpop_tryout.blazegraph_data_load.loadProperties(blazegraph_data_load.java:55)
at blazegraph_tinkerpop_tryout.blazegraph_data_load.main(blazegraph_data_load.java:32)
Call to loadProperties function from main:
Properties props = loadProperties("sampleprops.properties");
My loadProperties function (checking to see whether file path is valid, then sending to reader):
public static Properties loadProperties(String resource) throws IOException
{
Properties p = new Properties();
Path path = Paths.get(resource);
Boolean bool = Files.exists(path);
if (bool)
{
System.out.println("File was found. Attempting data load...");
InputStream is = blazegraph_data_load.class.getResourceAsStream(resource);
p.load(new InputStreamReader(new BufferedInputStream(is)));
return p;
}
System.out.println("The file you entered was not found.");
return null;
}
Here is what my file sampleprops.properties looks like:
com.bigdata.journal.AbstractJournal.bufferMode=DiskRW
com.bigdata.journal.AbstractJournal.file=blazegraph.jnl
I have been following the setup instructions from the sample Blazegraph app described here. If it makes a difference, I am using the Blazegraph/Tinkerpop3 implementation found here.

I found a workaround: I switched my getResourceAsStream method to a FileInputStream method.
The problem was with the placement of my properties file. The FileInputStream method seems more forgiving in where you place the file.

how to run java file in window powershell

I know there are similar questions out there but none of those solutions work for my case.
I tried to execute a Java file using Windows PowerShell.
This is what I have for Java file:
public class Demo1 {
public static void main (String arg[]){
System.out.println("DEMO1 START RUNNING");
try {
Thread.sleep(4000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
System.out.println("Unable to process");
}
System.out.println("DEMO1 JAVA COMPLETED.");
}
}
For easy compilation, I have copies of Demo1.java, Demo1.jar, and Demo1.class in the desktop directory.
for powershell command, I have tried:
1st attempt:
C:..\Desktop> java Demo1.java
2nd attempt:
C:..\Desktop> java -class Demo1.class
3rd attempt:
C:..\Desktop> java -jar Demo1.jar
All the above attempt return this error:
PS C:\Users\b003485\Desktop> java .\Demo1.java
Exception in thread "main" java.lang.NoClassDefFoundError: /\Demo1/java
Caused by: java.lang.ClassNotFoundException: .\Demo1.java
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
Could not find the main class: .\Demo1.java. Program will exit.

High lock contention in sun.misc.URLClassPath.getLoader under JAXB unmarshaller

We have this particular piece of code running on weblogic, its function is to return a java object specific to input class from XML input string. The code itself will be used by multiple of threads (50+).
public static Object toXMLObject(String XMLString, Class xmlClass)
throws Exception {
StringReader strReader = null;
try {
JAXBContext context = JAXBContexts.getJAXBContext(xmlClass); //Cached JAXBContext
Unmarshaller unmarshaller = context.createUnmarshaller();
strReader = new StringReader(XMLString);
return unmarshaller.unmarshal(strReader);
} catch(Exception e){
throw e;
} finally {
if(strReader != null){
strReader.close();
}
}
}
What we've seen from thread dump is that multiple of threads (51 threads) trying to lock on a single object
ExecuteThread: '52' for queue: 'automation'" daemon prio=3 tid=0x0000000103bcf800 nid=0x1a4 waiting for monitor entry [0xfffffffac2cfb000]**
java.lang.Thread.State: BLOCKED (on object monitor)
at sun.misc.URLClassPath.getLoader(URLClassPath.java:279)
- locked <0xfffffffb89f00ed8> (a sun.misc.URLClassPath)
at sun.misc.URLClassPath.findResource(URLClassPath.java:145)
at java.net.URLClassLoader$2.run(URLClassLoader.java:385)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findResource(URLClassLoader.java:382)
at java.lang.ClassLoader.getResource(ClassLoader.java:1002)
at java.lang.ClassLoader.getResource(ClassLoader.java:997)
at java.lang.ClassLoader.getResource(ClassLoader.java:997)
at weblogic.utils.classloaders.GenericClassLoader.getResourceInternal(GenericClassLoader.java:168)
at weblogic.utils.classloaders.GenericClassLoader.getResource(GenericClassLoader.java:182)
at weblogic.utils.classloaders.FilteringClassLoader.getResourceInternal(FilteringClassLoader.java:129)
at weblogic.utils.classloaders.GenericClassLoader.getResourceInternal(GenericClassLoader.java:154)
at weblogic.utils.classloaders.GenericClassLoader.getResource(GenericClassLoader.java:182)
at java.lang.ClassLoader.getResourceAsStream(ClassLoader.java:1192)
at org.apache.xerces.parsers.SecuritySupport$6.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.xerces.parsers.SecuritySupport.getResourceAsStream(Unknown Source)
at org.apache.xerces.parsers.ObjectFactory.findJarServiceProvider(Unknown Source)
at org.apache.xerces.parsers.ObjectFactory.createObject(Unknown Source)
at org.apache.xerces.parsers.ObjectFactory.createObject(Unknown Source)
at org.apache.xerces.parsers.SAXParser. (Unknown Source)
at org.apache.xerces.parsers.SAXParser. (Unknown Source)
at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser. (Unknown Source)
at org.apache.xerces.jaxp.SAXParserImpl. (Unknown Source)
at org.apache.xerces.jaxp.SAXParserFactoryImpl.newSAXParser(Unknown Source)
at weblogic.xml.jaxp.RegistrySAXParser. (RegistrySAXParser.java:65)
at weblogic.xml.jaxp.RegistrySAXParser. (RegistrySAXParser.java:46)
at weblogic.xml.jaxp.RegistrySAXParserFactory.newSAXParser(RegistrySAXParserFactory.java:91)
at javax.xml.bind.helpers.AbstractUnmarshallerImpl.getXMLReader(AbstractUnmarshallerImpl.java:86)
at javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(AbstractUnmarshallerImpl.java:137)
at javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(AbstractUnmarshallerImpl.java:194)
at com.util.XMLParserUtil.toXMLObject(XMLParserUtil.java:699)
ExecuteThread: '78' for queue: 'automation'" daemon prio=3 tid=0x000000010363b800 nid=0x1be waiting for monitor entry [0xfffffffabf8fb000]**
java.lang.Thread.State: BLOCKED (on object monitor)
at sun.misc.URLClassPath.getLoader(URLClassPath.java:279)
- waiting to lock <0xfffffffb89f00ed8> (a sun.misc.URLClassPath)
at sun.misc.URLClassPath.findResource(URLClassPath.java:145)
at java.net.URLClassLoader$2.run(URLClassLoader.java:385)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findResource(URLClassLoader.java:382)
at java.lang.ClassLoader.getResource(ClassLoader.java:1002)
at java.lang.ClassLoader.getResource(ClassLoader.java:997)
at java.lang.ClassLoader.getResource(ClassLoader.java:997)
at weblogic.utils.classloaders.GenericClassLoader.getResourceInternal(GenericClassLoader.java:168)
at weblogic.utils.classloaders.GenericClassLoader.getResource(GenericClassLoader.java:182)
at weblogic.utils.classloaders.FilteringClassLoader.getResourceInternal(FilteringClassLoader.java:129)
at weblogic.utils.classloaders.GenericClassLoader.getResourceInternal(GenericClassLoader.java:154)
at weblogic.utils.classloaders.GenericClassLoader.getResource(GenericClassLoader.java:182)
at java.lang.ClassLoader.getResourceAsStream(ClassLoader.java:1192)
at org.apache.xerces.parsers.SecuritySupport$6.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.xerces.parsers.SecuritySupport.getResourceAsStream(Unknown Source)
at org.apache.xerces.parsers.ObjectFactory.findJarServiceProvider(Unknown Source)
at org.apache.xerces.parsers.ObjectFactory.createObject(Unknown Source)
at org.apache.xerces.parsers.ObjectFactory.createObject(Unknown Source)
at org.apache.xerces.parsers.SAXParser. (Unknown Source)
at org.apache.xerces.parsers.SAXParser. (Unknown Source)
at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser. (Unknown Source)
at org.apache.xerces.jaxp.SAXParserImpl. (Unknown Source)
at org.apache.xerces.jaxp.SAXParserFactoryImpl.newSAXParser(Unknown Source)
at weblogic.xml.jaxp.RegistryXMLReader.getXMLReader(RegistryXMLReader.java:523)
at weblogic.xml.jaxp.RegistryXMLReader.getXMLReaderInternal(RegistryXMLReader.java:453)
at weblogic.xml.jaxp.RegistryXMLReader.parse(RegistryXMLReader.java:158)
at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:211)
at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:184)
at javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(AbstractUnmarshallerImpl.java:137)
at javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(AbstractUnmarshallerImpl.java:194)
at com.util.XMLParserUtil.toXMLObject(XMLParserUtil.java:699)
Did we implement JAXB code properly? How could we overcome this problem.
Ps. we've overriden JAXP with latest version (1.4.6) on JDK1.6.0_33

You could try doing the following:
package forum11344031;
import java.io.StringReader;
import javax.xml.bind.*;
import javax.xml.stream.*;
public class Demo {
private static final XMLInputFactory XIF = XMLInputFactory.newFactory();
public static Object toXMLObject(String XMLString, Class xmlClass)
throws Exception {
Object o;
StringReader strReader = null;
try {
JAXBContext context = JAXBContexts.getJAXBContext(xmlClass); //Cached JAXBContext
Unmarshaller unmarshaller = context.createUnmarshaller();
strReader = new StringReader(XMLString);
XMLStreamReader xmlStreamReader = XIF.createXMLStreamReader(strReader);
o = unmarshaller.unmarshal(xmlStreamReader);
xmlStreamReader.close();
} catch(Exception e){
throw e;
} finally {
if(strReader != null){
strReader.close();
}
}
return o;
}
}

What about this one, Will this help?
"-Djavax.xml.parsers.SAXParserFactory=org.apache.xerces.jaxp.SAXParserFactoryImpl"
according to slide#49 http://www.slideshare.net/sjlee0/robust-and-scalable-concurrent-programming-lesson-from-the-trenches

Thanks. I found very useful the presentation "Robust and Scalable Concurrent Programming". I have successfully tested the solution of the pages 49-50. Now I don't see locks in the method ObjectFactory.createObject.
The magic solution is to reserve a different SAXParser for each thread.
static private final ThreadLocal<SAXParser> sps = new ThreadLocal<SAXParser>();
public static SAXParser getParser() throws ParserConfigurationException, SAXException {
SAXParser parser = sps.get();
if (parser == null) {
parser = spf.newSAXParser();
sps.set(parser);
}
return parser;
}