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Cannot create PoolableConnectionFactory (unknown system variable 'language')

Anyone who had troubled with this error?
Cannot create PoolableConnectionFactory (unknown system variable 'language')
Programming with java, mysql, ibatis. Added some codes and existing codes make this error as well.
Below are the error messages.
org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Unknown system variable 'language')
at org.apache.commons.dbcp.BasicDataSource.createPoolableConnectionFactory(BasicDataSource.java:1549)
at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1388)
at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:1044)
at com.ibatis.sqlmap.engine.transaction.jdbc.JdbcTransaction.init(JdbcTransaction.java:48)
at com.ibatis.sqlmap.engine.transaction.jdbc.JdbcTransaction.getConnection(JdbcTransaction.java:89)
at com.ibatis.sqlmap.engine.mapping.statement.GeneralStatement.executeQueryForObject(GeneralStatement.java:104)
at com.ibatis.sqlmap.engine.impl.SqlMapExecutorDelegate.queryForObject(SqlMapExecutorDelegate.java:566)
at com.ibatis.sqlmap.engine.impl.SqlMapExecutorDelegate.queryForObject(SqlMapExecutorDelegate.java:541)
at com.ibatis.sqlmap.engine.impl.SqlMapSessionImpl.queryForObject(SqlMapSessionImpl.java:106)
at com.ibatis.sqlmap.engine.impl.SqlMapClientImpl.queryForObject(SqlMapClientImpl.java:83)
at kes.db.dao.BaseDao.getObject(BaseDao.java:116)
at ocserver.android.service.dao.TB_OC_USER_BADGE_INFO_DAO.confirmNotification(TB_OC_USER_BADGE_INFO_DAO.java:21)
at ocserver.android.service.action.PushNotificationBadgeModAction.requestTEXT(PushNotificationBadgeModAction.java:66)
at kes.controller.TEXTServletAction.requestTEXT(TEXTServletAction.java:82)
at kes.controller.TEXTServletAction.doPost(TEXTServletAction.java:58)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Unknown Source)
And below are my sql statement.
<select id="select_TB_OC_USER_BADGE_INFO_001" parameterClass="TB_OC_USER_BADGE_INFO_VO" resultClass="TB_OC_USER_BADGE_INFO_VO">
<![CDATA[
SELECT
BADGE_MC,
BADGE_WB
FROM
TB_OC_USER_BADGE_INFO
WHERE
USER_ID = #USER_ID#
AND
COMPANY_CODE = #COMPANY_CODE#
]]>
</select>
Belows are TB_OC_USER_BADGE_INFO_VO. Didn't bring getter and setter.
public class TB_OC_USER_BADGE_INFO_VO {
private String USER_ID;
private String COMPANY_CODE;
private String TYPE;
private int BADGE_MC;
private int BADGE_WB; }

The problem was firewall. The firewall had blocked java to access to database on other computer. When permitted the access, my program started working.

I change my java connector library to mysql-connector-java-5.1.23-bin.jar and it works good.
This problem was in mysql-connector-java-5.1.36.jar

Are you maybe using the buggy MySQL Connector/J? See:
https://confluence.atlassian.com/jirakb/unknown-system-variable-language-on-database-setup-page-when-using-mysql-765400069.html
https://bugs.mysql.com/bug.php?id=77665

LockObtainFailedException at new IndexWriter()

I am using Crawler controller to crawl all pages of a medium website. It randomly crawls 2-3 pages and then it causes a lock on the IndexWriter
Directory dir = FSDirectory.open(new File(index));
IndexWriterConfig conf = new IndexWriterConfig(org.apache.lucene.util.Version.LUCENE_41,new StandardAnalyzer(org.apache.lucene.util.Version.LUCENE_41));
writer = new IndexWriter(dir, conf); // line which throws lock exception.
Logs:
From: SiteSearch.KCCrawlerController.(80): Lock obtain timed out: NativeFSLock#D:\Websites\ccc\WEB-INF\lucene-index\en\write.lock: 05/08/2014 10:57:55
org.apache.lucene.store.LockObtainFailedException: Lock obtain timed out: NativeFSLock#D:\Websites\ccc\WEB-INF\lucene-index\en\write.lock
at org.apache.lucene.store.Lock.obtain(Lock.java:84)
at org.apache.lucene.index.IndexWriter.(IndexWriter.java:636)
at SiteSearch.KCCrawlerController.(KCCrawlerController.java:80)
at org.apache.jsp.monitors.siteSearchIndexer_jsp._jspService(siteSearchIndexer_jsp.java:66)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:386)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at com.tridion.ambientdata.web.AmbientDataServletFilter.doFilter(AmbientDataServletFilter.java:255)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at adminV3.ugc.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:82)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.ajp.AjpAprProcessor.process(AjpAprProcessor.java:429)
at org.apache.coyote.ajp.AjpAprProtocol$AjpConnectionHandler.process(AjpAprProtocol.java:384)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1665)
at java.lang.Thread.run(Unknown Source)
Adding jsp:
http://example.com/en/consulting/diagnostics.jsp?crawler=yes
From: SiteSearch.KCCrawler.visit(95): Stream closed: 05/08/2014
10:57:55 java.io.IOException: Stream closed at
org.apache.jasper.runtime.JspWriterImpl.ensureOpen(JspWriterImpl.java:204)
at
org.apache.jasper.runtime.JspWriterImpl.write(JspWriterImpl.java:312)
at
org.apache.jasper.runtime.JspWriterImpl.write(JspWriterImpl.java:342)
at SiteSearch.KCCrawler.visit(KCCrawler.java:95) at
edu.uci.ics.crawler4j.crawler.WebCrawler.processPage(WebCrawler.java:306)
at edu.uci.ics.crawler4j.crawler.WebCrawler.run(WebCrawler.java:189)
at java.lang.Thread.run(Unknown Source)
Why am I getting this exception? Any help.
UPDATE: 17/08/2014 :
When I run the Indexer first time, it completes successfully with the below exception thrown. If I run the search on this, I get my results successfully. However if I run the Indexer again, it throws the lock exception mentioned above. It also shows that my controller class is called twice.
org.apache.catalina.core.StandardWrapperValve invoke SEVERE:
Servlet.service() for servlet jsp threw exception java.io.IOException:
Stream closed at
org.apache.jasper.runtime.JspWriterImpl.ensureOpen(JspWriterImpl.java:204)
at
org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:115)
at
org.apache.jasper.runtime.PageContextImpl.release(PageContextImpl.java:188)
at
org.apache.jasper.runtime.JspFactoryImpl.internalReleasePageContext(JspFactoryImpl.java:118)
at
org.apache.jasper.runtime.JspFactoryImpl.releasePageContext(JspFactoryImpl.java:77)
at
org.apache.jsp.monitors.siteSearchIndexer_jsp._jspService(siteSearchIndexer_jsp.java:82)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:386)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)

Quoting the Javadocs -
"Opening an IndexWriter creates a lock file for the directory in use. Trying to open another IndexWriter on the same directory will lead to a LockObtainFailedException. The LockObtainFailedException is also thrown if an IndexReader on the same directory is used to delete documents from the index."
"IndexWriter instances are completely thread safe, meaning multiple threads can call any of its methods, concurrently. If your application requires external synchronization, you should not synchronize on the IndexWriter instance as this may cause deadlock; use your own (non-Lucene) objects instead."
https://lucene.apache.org/core/4_1_0/core/org/apache/lucene/index/IndexWriter.html
Are you creating new instances of IndexWriter for each page that you are crawling?

Could not initialize class com.avaje.ebean.Ebean?

I am having a wicket application and I am using Ebean ORM mapping. I have set all the credential in ebean.properties. But I am getting an error message "Could not initialize class com.avaje.ebean.Ebean" when I deployed it on server, Its gives error as follows
Last cause: Could not initialize class com.avaje.ebean.Ebean
WicketMessage: Can't instantiate page using constructor 'public com.zipgrocery.pages.HomePageNew(org.apache.wicket.request.mapper.parameter.PageParameters)' and argument ''. Might be it doesn't exist, may be it is not visible (public).
Stacktrace
Root cause:
java.lang.NoClassDefFoundError: Could not initialize class com.avaje.ebean.Ebean
at com.zipgrocery.data.Merchant.getMerchantsByZone(Merchant.java:374)
at com.zipgrocery.pages.HomePageNew.<init>(HomePageNew.java:77)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:173)
at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:77)
at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:47)
at org.apache.wicket.DefaultMapperContext.newPageInstance(DefaultMapperContext.java:103)
at org.apache.wicket.request.handler.PageProvider.resolvePageInstance(PageProvider.java:264)
at org.apache.wicket.request.handler.PageProvider.getPageInstance(PageProvider.java:165)
at org.apache.wicket.request.handler.render.PageRenderer.getPage(PageRenderer.java:78)
at org.apache.wicket.request.handler.render.WebPageRenderer.renderPage(WebPageRenderer.java:105)
at org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:224)
at org.apache.wicket.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:167)
at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:784)
at org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64)
at org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:255)
at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:212)
at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:283)
at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:188)
at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:244)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:190)
at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:311)
at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:776)
at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:705)
at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:898)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690)
at java.lang.Thread.run(Thread.java:619)
Complete stack:
org.apache.wicket.WicketRuntimeException: Can't instantiate page using constructor 'public com.zipgrocery.pages.HomePageNew(org.apache.wicket.request.mapper.parameter.PageParameters)' and argument ''. Might be it doesn't exist, may be it is not visible (public).
at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:196)
at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:77)
at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:47)
at org.apache.wicket.DefaultMapperContext.newPageInstance(DefaultMapperContext.java:103)
at org.apache.wicket.request.handler.PageProvider.resolvePageInstance(PageProvider.java:264)
at org.apache.wicket.request.handler.PageProvider.getPageInstance(PageProvider.java:165)
at org.apache.wicket.request.handler.render.PageRenderer.getPage(PageRenderer.java:78)
at org.apache.wicket.request.handler.render.WebPageRenderer.renderPage(WebPageRenderer.java:105)
at org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:224)
at org.apache.wicket.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:167)
at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:784)
at org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64)
at org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:255)
at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:212)
at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:283)
at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:188)
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:173)
at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:77)
at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:47)
at org.apache.wicket.DefaultMapperContext.newPageInstance(DefaultMapperContext.java:103)
at org.apache.wicket.request.handler.PageProvider.resolvePageInstance(PageProvider.java:264)
at org.apache.wicket.request.handler.PageProvider.getPageInstance(PageProvider.java:165)
at org.apache.wicket.request.handler.render.PageRenderer.getPage(PageRenderer.java:78)
at org.apache.wicket.request.handler.render.WebPageRenderer.renderPage(WebPageRenderer.java:105)
at org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:224)
at org.apache.wicket.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:167)
at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:784)
at org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64)
at org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:255)
at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:212)
at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:283)
at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:188)
But it works fine when I deploy it on my localhost. I tried to find the solutions for this but not getting. So Help me out...

I'm not familiar with this guy "Ebean ORM", but the error track is pretty generic and seems has nothing really to do with "Ebean ORM" itself. Based on my past exp, it is more like a classloader issue. You said it was running fine locally and then? where is it broken? when you have such issues like "NoClassDefFoundError", always check what classloader is being used. And also it is worth to check whether your broken environment has multiple versions of the class/jar as well as if the server has its embedded version of this class/jar.

javax.faces.application.ViewExpiredException: View could not be restored

i've created this webpage using jsf,prettyfaces and hibernate
i looked around and most people says that this error is because of cache
most of them found this error after login,logout and try to login back
but i found this error when i log in,and when i try to navigate to any other page,any link that i clicked will produce this error
what makes it harder is that this error doesnt occur everytime
sometimes when i try restart the server,login back,everythin work just fine
but sometimes when this error occur again, i tried restart the server and try login back.the same error still occur
javax.faces.application.ViewExpiredException: viewId:/ePortfolio.jsf - View /ePortfolio.jsf could not be restored.
at com.sun.faces.lifecycle.RestoreViewPhase.execute(RestoreViewPhase.java:212)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.RestoreViewPhase.doPhase(RestoreViewPhase.java:110)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:312)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:79)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at com.ocpsoft.pretty.PrettyFilter.doFilter(PrettyFilter.java:112)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:470)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Unknown Source)

JSF keeps a (configurable) number of views in the session. You will get this ViewExpiredException if you do a post to a view that cannot be restored anymore, ie. not present anymore in the list of views for that session.
There can be multiple reasons for this. Two possible scenario's I can think of right now are:
Session invalidated/expired
Multiple (> configured number of sessions in view) views being created after the one that should be restored

To my understanding this is caused by the combination of several things:
A JSF-form containing an internal id for a field has been generated.
The JSF-page has been changed, or the whole application redeployed, causing the internal ids to change.
The JSF-form with the old internal id is submitted (a login page?) and the old internal id cannot be found in the new ids for the JSF-page.
You must have the page refreshed in the browser (getting the new id's) before attempting to submit again.

twitter4j.TwitterException: 401:Authentication credentials were missing or incorrect

I am developing web based application in Java [GWT]
I am facing problem with TwitterException.
I used valid credential.
Twitter twitter = new Twitter(myTwitterId, myTwiterPwd);
when I call twitter.getFollowers() method
I got following Error Message
twitter4j.TwitterException: 401:Authentication credentials were missing or incorrect.
<?xml version="1.0" encoding="UTF-8"?>
<errors>
<error code="53">Basic authentication is not supported</error>
</errors>
at twitter4j.http.HttpClient.httpRequest(HttpClient.java:469)
at twitter4j.http.HttpClient.get(HttpClient.java:412)
at twitter4j.Twitter.get(Twitter.java:276)
at twitter4j.Twitter.get(Twitter.java:228)
at twitter4j.Twitter.getFollowersStatuses(Twitter.java:1363)
at twitter4j.Twitter.getFollowers(Twitter.java:1350)
at com.vaibhav.dealelephant.server.impl.TwitterServiceImpl.getTwitterFollowers(TwitterServiceImpl.java:49)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:562)
at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:188)
at com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:224)
at com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:62)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:619)
I want to display My followers Images into My Website, but it throws exception after calling this method twitter.getFollowers() method. SO unable to get My follwers Images :(
Please provide me Easy solution for the same
Hope for the best co-operation from your side
Thanks in advance !!!

Yes, your authentication is not working because Twitter made some recent changes
regarding how it lets 3rd party code authenticate.
http://news.techworld.com/security/3237604/twitter-turns-on-oauth-api-authentication/
http://www.networkworld.com/news/2010/083110-twitter-api-has-new-third.html?hpg1=bn
http://www.wired.com/epicenter/2010/08/twitter-login-errors/
http://groups.google.com/group/twitter-api-announce/browse_thread/thread/f71eb68600996af8
In other words, Basic authentication has been turned off for the API.
https://apiwiki.twitter.com/Authentication
As Allain mentions, oAuth is the way to go.

The code you posted is different than what I've seen in the past for connecting. I think (though I'm not sure) that oAuth is the preferred way of authenticating now.
Here's a blog that details using oAuth to connect.

I was having that trouble, finally the solution was to put a valid Callback url in my twitter API at (https://dev.twitter.com/‎), I used google+ url, saved changes (it could take a minutes before the changes are made, refresh the page to be sure) and it worked.