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When I Try To Connect Database Using The Netbeans The Exception Thrown Was

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ep 20, 2007 11:25:57 AM org.apache.cata lina.core.AprLi fecycleListener lifecycleEvent
INFO: The Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.pa th: C:\Program Files\Java\jdk1 .5.0_12\bin;.;C :\WINDOWS\Syste m32;C:\WINDOWS; C:\WINDOWS\syst em32;C:\WINDOWS ;C:\WINDOWS\Sys tem32\Wbem;C:\P rogram Files\j2sdk_nb\ j2sdk1.4.2\bin; C:\Program Files\QuickTime \QTSystem;c:\iB OLT2.5;C:\Progr am Files\MySQL\MyS QL Server 5.0\bin;C:\Prog ram Files\Microsoft Visual Studio\Common\T ools\WinNT;C:\P rogram Files\Microsoft Visual Studio\Common\M SDev98\Bin;C:\P rogram Files\Microsoft Visual Studio\Common\T ools;C:\Program Files\Microsoft Visual Studio\VC98\bin ;%C:\Program Files\j2sdk_nb\ j2sdk1.4.2\bin
Sep 20, 2007 11:25:58 AM org.apache.coyo te.http11.Http1 1BaseProtocol init
INFO: Initializing Coyote HTTP/1.1 on http-8084
Sep 20, 2007 11:25:58 AM org.apache.cata lina.startup.Ca talina load
INFO: Initialization processed in 2984 ms
Sep 20, 2007 11:25:59 AM org.apache.cata lina.core.Stand ardService start
INFO: Starting service Catalina
Sep 20, 2007 11:25:59 AM org.apache.cata lina.core.Stand ardEngine start
INFO: Starting Servlet Engine: Apache Tomcat/5.5.17
Sep 20, 2007 11:25:59 AM org.apache.cata lina.core.Stand ardHost start
INFO: XML validation disabled
Sep 20, 2007 11:26:03 AM org.apache.cata lina.core.Stand ardContext resourcesStart
SEVERE: Error starting static Resources
java.lang.Illeg alArgumentExcep tion: Document base D:\Arasu\projec ts\jwp\forums\b uild\web does not exist or is not a readable directory
at org.apache.nami ng.resources.Fi leDirContext.se tDocBase(FileDi rContext.java:1 40)
at org.apache.cata lina.core.Stand ardContext.reso urcesStart(Stan dardContext.jav a:3814)
at org.apache.cata lina.core.Stand ardContext.star t(StandardConte xt.java:3985)
at org.apache.cata lina.core.Conta inerBase.addChi ldInternal(Cont ainerBase.java: 759)
at org.apache.cata lina.core.Conta inerBase.addChi ld(ContainerBas e.java:739)
at org.apache.cata lina.core.Stand ardHost.addChil d(StandardHost. java:524)
at org.apache.cata lina.startup.Ho stConfig.deploy Descriptor(Host Config.java:608 )
at org.apache.cata lina.startup.Ho stConfig.deploy Descriptors(Hos tConfig.java:53 5)
at org.apache.cata lina.startup.Ho stConfig.deploy Apps(HostConfig .java:470)
at org.apache.cata lina.startup.Ho stConfig.start( HostConfig.java :1122)
at org.apache.cata lina.startup.Ho stConfig.lifecy cleEvent(HostCo nfig.java:310)
at org.apache.cata lina.util.Lifec ycleSupport.fir eLifecycleEvent (LifecycleSuppo rt.java:119)
at org.apache.cata lina.core.Conta inerBase.start( ContainerBase.j ava:1021)
at org.apache.cata lina.core.Stand ardHost.start(S tandardHost.jav a:718)
at org.apache.cata lina.core.Conta inerBase.start( ContainerBase.j ava:1013)
at org.apache.cata lina.core.Stand ardEngine.start (StandardEngine .java:442)
at org.apache.cata lina.core.Stand ardService.star t(StandardServi ce.java:450)
at org.apache.cata lina.core.Stand ardServer.start (StandardServer .java:709)
at org.apache.cata lina.startup.Ca talina.start(Ca talina.java:551 )
at sun.reflect.Nat iveMethodAccess orImpl.invoke0( Native Method)
at sun.reflect.Nat iveMethodAccess orImpl.invoke(N ativeMethodAcce ssorImpl.java:3 9)
at sun.reflect.Del egatingMethodAc cessorImpl.invo ke(DelegatingMe thodAccessorImp l.java:25)
at java.lang.refle ct.Method.invok e(Method.java:5 85)
at org.apache.cata lina.startup.Bo otstrap.start(B ootstrap.java:2 94)
at org.apache.cata lina.startup.Bo otstrap.main(Bo otstrap.java:43 2)
Sep 20, 2007 11:26:03 AM org.apache.cata lina.core.Stand ardContext start
SEVERE: Error in resourceStart()
Sep 20, 2007 11:26:03 AM org.apache.cata lina.core.Stand ardContext start
SEVERE: Error getConfigured
Sep 20, 2007 11:26:03 AM org.apache.cata lina.core.Stand ardContext start
SEVERE: Context [/forums] startup failed due to previous errors
Sep 20, 2007 11:26:03 AM org.apache.cata lina.core.Stand ardContext stop
INFO: Container org.apache.cata lina.core.Conta inerBase.[Catalina].[localhost].[/forums] has not been started
Sep 20, 2007 11:26:04 AM org.apache.cata lina.loader.Web appClassLoader validateJarFile
INFO: validateJarFile (D:\Arasu\proje cts\src\build\w eb\WEB-INF\lib\servlet .jar) - jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/servlet/Servlet.class
Sep 20, 2007 11:26:07 AM org.apache.stru ts.util.Propert yMessageResourc es <init>
INFO: Initializing, config='org.apa che.struts.util .LocalStrings', returnNull=true
Sep 20, 2007 11:26:07 AM org.apache.stru ts.util.Propert yMessageResourc es <init>
INFO: Initializing, config='org.apa che.struts.acti on.ActionResour ces', returnNull=true
Sep 20, 2007 11:26:07 AM org.apache.coyo te.http11.Http1 1BaseProtocol start
INFO: Starting Coyote HTTP/1.1 on http-8084
Sep 20, 2007 11:26:08 AM org.apache.jk.c ommon.ChannelSo cket init
INFO: JK: ajp13 listening on /0.0.0.0:8009
Sep 20, 2007 11:26:08 AM org.apache.jk.s erver.JkMain start
INFO: Jk running ID=0 time=0/47 config=null
Sep 20, 2007 11:26:08 AM org.apache.cata lina.storeconfi g.StoreLoader load
INFO: Find registry server-registry.xml at classpath resource
Sep 20, 2007 11:26:08 AM org.apache.cata lina.startup.Ca talina start
INFO: Server startup in 9641 ms
Sep 20, 2007 11:26:10 AM org.apache.cata lina.startup.Ho stConfig checkResources
INFO: Undeploying context [/src]
Sep 20, 2007 11:26:10 AM org.apache.cata lina.loader.Web appClassLoader validateJarFile
INFO: validateJarFile (D:\Arasu\proje cts\src\build\w eb\WEB-INF\lib\servlet .jar) - jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/servlet/Servlet.class
Sep 20, 2007 11:26:10 AM org.apache.cata lina.core.Stand ardContext processTlds
SEVERE: Error reading tld listeners javax.servlet.S ervletException : Exception processing TLD at resource path /WEB-INF/struts-logic.tld in context /src
javax.servlet.S ervletException : Exception processing TLD at resource path /WEB-INF/struts-logic.tld in context /src
at org.apache.cata lina.startup.Tl dConfig.tldScan Tld(TldConfig.j ava:555)
at org.apache.cata lina.startup.Tl dConfig.execute (TldConfig.java :301)
at org.apache.cata lina.core.Stand ardContext.proc essTlds(Standar dContext.java:4 278)
at org.apache.cata lina.core.Stand ardContext.star t(StandardConte xt.java:4115)
at org.apache.cata lina.core.Conta inerBase.addChi ldInternal(Cont ainerBase.java: 759)
at org.apache.cata lina.core.Conta inerBase.addChi ld(ContainerBas e.java:739)
at org.apache.cata lina.core.Stand ardHost.addChil d(StandardHost. java:524)
at org.apache.cata lina.startup.Ho stConfig.deploy Descriptor(Host Config.java:608 )
at org.apache.cata lina.startup.Ho stConfig.deploy Apps(HostConfig .java:493)
at org.apache.cata lina.startup.Ho stConfig.check( HostConfig.java :1204)
at sun.reflect.Nat iveMethodAccess orImpl.invoke0( Native Method)
at sun.reflect.Nat iveMethodAccess orImpl.invoke(N ativeMethodAcce ssorImpl.java:3 9)
at sun.reflect.Del egatingMethodAc cessorImpl.invo ke(DelegatingMe thodAccessorImp l.java:25)
at java.lang.refle ct.Method.invok e(Method.java:5 85)
at org.apache.comm ons.modeler.Bas eModelMBean.inv oke(BaseModelMB ean.java:503)
at com.sun.jmx.mbe anserver.Dynami cMetaDataImpl.i nvoke(DynamicMe taDataImpl.java :213)
at com.sun.jmx.mbe anserver.MetaDa taImpl.invoke(M etaDataImpl.jav a:220)
at com.sun.jmx.int erceptor.Defaul tMBeanServerInt erceptor.invoke (DefaultMBeanSe rverInterceptor .java:815)
at com.sun.jmx.mbe anserver.JmxMBe anServer.invoke (JmxMBeanServer .java:784)
at org.apache.cata lina.manager.Ma nagerServlet.ch eck(ManagerServ let.java:1377)
at org.apache.cata lina.manager.Ma nagerServlet.de ploy(ManagerSer vlet.java:814)
at org.apache.cata lina.manager.Ma nagerServlet.do Get(ManagerServ let.java:343)
at javax.servlet.h ttp.HttpServlet .service(HttpSe rvlet.java:689)
at javax.servlet.h ttp.HttpServlet .service(HttpSe rvlet.java:802)
at org.apache.cata lina.core.Appli cationFilterCha in.internalDoFi lter(Applicatio nFilterChain.ja va:252)
at org.apache.cata lina.core.Appli cationFilterCha in.doFilter(App licationFilterC hain.java:173)
at org.netbeans.mo dules.web.monit or.server.Monit orFilter.doFilt er(MonitorFilte r.java:174)
at org.apache.cata lina.core.Appli cationFilterCha in.internalDoFi lter(Applicatio nFilterChain.ja va:202)
at org.apache.cata lina.core.Appli cationFilterCha in.doFilter(App licationFilterC hain.java:173)
at org.apache.cata lina.core.Stand ardWrapperValve .invoke(Standar dWrapperValve.j ava:213)
at org.apache.cata lina.core.Stand ardContextValve .invoke(Standar dContextValve.j ava:178)
at org.apache.cata lina.authentica tor.Authenticat orBase.invoke(A uthenticatorBas e.java:524)
at org.apache.cata lina.core.Stand ardHostValve.in voke(StandardHo stValve.java:12 6)
at org.apache.cata lina.valves.Err orReportValve.i nvoke(ErrorRepo rtValve.java:10 5)
at org.apache.cata lina.core.Stand ardEngineValve. invoke(Standard EngineValve.jav a:107)
at org.apache.cata lina.connector. CoyoteAdapter.s ervice(CoyoteAd apter.java:148)
at org.apache.coyo te.http11.Http1 1Processor.proc ess(Http11Proce ssor.java:869)
at org.apache.coyo te.http11.Http1 1BaseProtocol$H ttp11Connection Handler.process Connection(Http 11BaseProtocol. java:664)
at org.apache.tomc at.util.net.Poo lTcpEndpoint.pr ocessSocket(Poo lTcpEndpoint.ja va:527)
at org.apache.tomc at.util.net.Lea derFollowerWork erThread.runIt( LeaderFollowerW orkerThread.jav a:80)
at org.apache.tomc at.util.threads .ThreadPool$Con trolRunnable.ru n(ThreadPool.ja va:684)
at java.lang.Threa d.run(Thread.ja va:595)
Sep 20, 2007 11:26:10 AM org.apache.stru ts.util.Propert yMessageResourc es <init>
INFO: Initializing, config='org.apa che.struts.util .LocalStrings', returnNull=true
Sep 20, 2007 11:26:10 AM org.apache.stru ts.util.Propert yMessageResourc es <init>
INFO: Initializing, config='org.apa che.struts.acti on.ActionResour ces', returnNull=true
java.sql.SQLExc eption: Server connection failure during transaction.
Attemtped reconnect 3 times. Giving up.
at com.mysql.jdbc. Connection.crea teNewIO(Connect ion.java:1702)
at com.mysql.jdbc. Connection.<ini t>(Connection.j ava:524)
at com.mysql.jdbc. Driver.connect( Driver.java:359 )
at java.sql.Driver Manager.getConn ection(DriverMa nager.java:525)
at java.sql.Driver Manager.getConn ection(DriverMa nager.java:171)
at jdebertshaeuser .beans.webproje ct.MySQL_Verbin dung.start(Unkn own Source)
at jdebertshaeuser .beans.webproje ct.MySQL_Verbin dung.<init>(Unk nown Source)
at jdebertshaeuser .beans.webproje ct.ApplicationB ean.loadUsers(U nknown Source)
at jdebertshaeuser .beans.webproje ct.ApplicationB ean.<init>(Unkn own Source)
at org.apache.jsp. admin.check_jsp ._jspService(ch eck_jsp.java:69 )
at org.apache.jasp er.runtime.Http JspBase.service (HttpJspBase.ja va:97)
at javax.servlet.h ttp.HttpServlet .service(HttpSe rvlet.java:802)
at org.apache.jasp er.servlet.JspS ervletWrapper.s ervice(JspServl etWrapper.java: 329)
at org.apache.jasp er.servlet.JspS ervlet.serviceJ spFile(JspServl et.java:314)
at org.apache.jasp er.servlet.JspS ervlet.service( JspServlet.java :264)
at javax.servlet.h ttp.HttpServlet .service(HttpSe rvlet.java:802)
at org.apache.cata lina.core.Appli cationFilterCha in.internalDoFi lter(Applicatio nFilterChain.ja va:252)
at org.apache.cata lina.core.Appli cationFilterCha in.doFilter(App licationFilterC hain.java:173)
at org.netbeans.mo dules.web.monit or.server.Monit orFilter.doFilt er(MonitorFilte r.java:368)
at org.apache.cata lina.core.Appli cationFilterCha in.internalDoFi lter(Applicatio nFilterChain.ja va:202)
at org.apache.cata lina.core.Appli cationFilterCha in.doFilter(App licationFilterC hain.java:173)
at org.apache.cata lina.core.Stand ardWrapperValve .invoke(Standar dWrapperValve.j ava:213)
at org.apache.cata lina.core.Stand ardContextValve .invoke(Standar dContextValve.j ava:178)
at org.apache.cata lina.core.Stand ardHostValve.in voke(StandardHo stValve.java:12 6)
at org.apache.cata lina.valves.Err orReportValve.i nvoke(ErrorRepo rtValve.java:10 5)
at org.apache.cata lina.core.Stand ardEngineValve. invoke(Standard EngineValve.jav a:107)
at org.apache.cata lina.connector. CoyoteAdapter.s ervice(CoyoteAd apter.java:148)
at org.apache.coyo te.http11.Http1 1Processor.proc ess(Http11Proce ssor.java:869)
at org.apache.coyo te.http11.Http1 1BaseProtocol$H ttp11Connection Handler.process Connection(Http 11BaseProtocol. java:664)
at org.apache.tomc at.util.net.Poo lTcpEndpoint.pr ocessSocket(Poo lTcpEndpoint.ja va:527)
at org.apache.tomc at.util.net.Lea derFollowerWork erThread.runIt( LeaderFollowerW orkerThread.jav a:80)
at org.apache.tomc at.util.threads .ThreadPool$Con trolRunnable.ru n(ThreadPool.ja va:684)
at java.lang.Threa d.run(Thread.ja va:595)
Fehler: java.sql.SQLExc eption: Server connection failure during transaction.
Attemtped reconnect 3 times. Giving up.
Fehler: java.lang.NullP ointerException
java.sql.SQLExc eption: Server connection failure during transaction.
Attemtped reconnect 3 times. Giving up.
at com.mysql.jdbc. Connection.crea teNewIO(Connect ion.java:1702)
at com.mysql.jdbc. Connection.<ini t>(Connection.j ava:524)
at com.mysql.jdbc. Driver.connect( Driver.java:359 )
at java.sql.Driver Manager.getConn ection(DriverMa nager.java:525)
at java.sql.Driver Manager.getConn ection(DriverMa nager.java:171)
at jdebertshaeuser .beans.webproje ct.MySQL_Verbin dung.start(Unkn own Source)
at jdebertshaeuser .beans.webproje ct.MySQL_Verbin dung.<init>(Unk nown Source)
at jdebertshaeuser .beans.webproje ct.ApplicationB ean.loadUsers(U nknown Source)
at jdebertshaeuser .beans.webproje ct.ApplicationB ean.checkUser(U nknown Source)
at org.apache.jsp. admin.check_jsp ._jspService(ch eck_jsp.java:85 )
at org.apache.jasp er.runtime.Http JspBase.service (HttpJspBase.ja va:97)
at javax.servlet.h ttp.HttpServlet .service(HttpSe rvlet.java:802)
at org.apache.jasp er.servlet.JspS ervletWrapper.s ervice(JspServl etWrapper.java: 329)
at org.apache.jasp er.servlet.JspS ervlet.serviceJ spFile(JspServl et.java:314)
at org.apache.jasp er.servlet.JspS ervlet.service( JspServlet.java :264)
at javax.servlet.h ttp.HttpServlet .service(HttpSe rvlet.java:802)
at org.apache.cata lina.core.Appli cationFilterCha in.internalDoFi lter(Applicatio nFilterChain.ja va:252)
at org.apache.cata lina.core.Appli cationFilterCha in.doFilter(App licationFilterC hain.java:173)
at org.netbeans.mo dules.web.monit or.server.Monit orFilter.doFilt er(MonitorFilte r.java:368)
at org.apache.cata lina.core.Appli cationFilterCha in.internalDoFi lter(Applicatio nFilterChain.ja va:202)
at org.apache.cata lina.core.Appli cationFilterCha in.doFilter(App licationFilterC hain.java:173)
at org.apache.cata lina.core.Stand ardWrapperValve .invoke(Standar dWrapperValve.j ava:213)
at org.apache.cata lina.core.Stand ardContextValve .invoke(Standar dContextValve.j ava:178)
at org.apache.cata lina.core.Stand ardHostValve.in voke(StandardHo stValve.java:12 6)
at org.apache.cata lina.valves.Err orReportValve.i nvoke(ErrorRepo rtValve.java:10 5)
at org.apache.cata lina.core.Stand ardEngineValve. invoke(Standard EngineValve.jav a:107)
at org.apache.cata lina.connector. CoyoteAdapter.s ervice(CoyoteAd apter.java:148)
at org.apache.coyo te.http11.Http1 1Processor.proc ess(Http11Proce ssor.java:869)
at org.apache.coyo te.http11.Http1 1BaseProtocol$H ttp11Connection Handler.process Connection(Http 11BaseProtocol. java:664)
at org.apache.tomc at.util.net.Poo lTcpEndpoint.pr ocessSocket(Poo lTcpEndpoint.ja va:527)
at org.apache.tomc at.util.net.Lea derFollowerWork erThread.runIt( LeaderFollowerW orkerThread.jav a:80)
at org.apache.tomc at.util.threads .ThreadPool$Con trolRunnable.ru n(ThreadPool.ja va:684)
at java.lang.Threa d.run(Thread.ja va:595)
Fehler: java.sql.SQLExc eption: Server connection failure during transaction.
Attemtped reconnect 3 times. Giving up.
java.sql.SQLExc eption: Server connection failure during transaction.
Attemtped reconnect 3 times. Giving up.
at com.mysql.jdbc. Connection.crea teNewIO(Connect ion.java:1702)
at com.mysql.jdbc. Connection.<ini t>(Connection.j ava:524)
at com.mysql.jdbc. Driver.connect( Driver.java:359 )
at java.sql.Driver Manager.getConn ection(DriverMa nager.java:525)
at java.sql.Driver Manager.getConn ection(DriverMa nager.java:171)
at jdebertshaeuser .beans.webproje ct.MySQL_Verbin dung.start(Unkn own Source)
at jdebertshaeuser .beans.webproje ct.MySQL_Verbin dung.<init>(Unk nown Source)
at jdebertshaeuser .beans.webproje ct.ApplicationB ean.loadUsers(U nknown Source)
at jdebertshaeuser .beans.webproje ct.ApplicationB ean.checkUser(U nknown Source)
at org.apache.jsp. admin.check_jsp ._jspService(ch eck_jsp.java:85 )
at org.apache.jasp er.runtime.Http JspBase.service (HttpJspBase.ja va:97)
at javax.servlet.h ttp.HttpServlet .service(HttpSe rvlet.java:802)
at org.apache.jasp er.servlet.JspS ervletWrapper.s ervice(JspServl etWrapper.java: 329)
at org.apache.jasp er.servlet.JspS ervlet.serviceJ spFile(JspServl et.java:314)
at org.apache.jasp er.servlet.JspS ervlet.service( JspServlet.java :264)
at javax.servlet.h ttp.HttpServlet .service(HttpSe rvlet.java:802)
at org.apache.cata lina.core.Appli cationFilterCha in.internalDoFi lter(Applicatio nFilterChain.ja va:252)
at org.apache.cata lina.core.Appli cationFilterCha in.doFilter(App licationFilterC hain.java:173)
at org.netbeans.mo dules.web.monit or.server.Monit orFilter.doFilt er(MonitorFilte r.java:368)
at org.apache.cata lina.core.Appli cationFilterCha in.internalDoFi lter(Applicatio nFilterChain.ja va:202)
at org.apache.cata lina.core.Appli cationFilterCha in.doFilter(App licationFilterC hain.java:173)
at org.apache.cata lina.core.Stand ardWrapperValve .invoke(Standar dWrapperValve.j ava:213)
at org.apache.cata lina.core.Stand ardContextValve .invoke(Standar dContextValve.j ava:178)
at org.apache.cata lina.core.Stand ardHostValve.in voke(StandardHo stValve.java:12 6)
at org.apache.cata lina.valves.Err orReportValve.i nvoke(ErrorRepo rtValve.java:10 5)
at org.apache.cata lina.core.Stand ardEngineValve. invoke(Standard EngineValve.jav a:107)
at org.apache.cata lina.connector. CoyoteAdapter.s ervice(CoyoteAd apter.java:148)
at org.apache.coyo te.http11.Http1 1Processor.proc ess(Http11Proce ssor.java:869)
at org.apache.coyo te.http11.Http1 1BaseProtocol$H ttp11Connection Handler.process Connection(Http 11BaseProtocol. java:664)
at org.apache.tomc at.util.net.Poo lTcpEndpoint.pr ocessSocket(Poo lTcpEndpoint.ja va:527)
at org.apache.tomc at.util.net.Lea derFollowerWork erThread.runIt( LeaderFollowerW orkerThread.jav a:80)
at org.apache.tomc at.util.threads .ThreadPool$Con trolRunnable.ru n(ThreadPool.ja va:684)
at java.lang.Threa d.run(Thread.ja va:595)
Fehler: java.sql.SQLExc eption: Server connection failure during transaction.
Attemtped reconnect 3 times. Giving up.
Sep 20 '07 #1
3 2904
dmjpro
2,476 Top Contributor
Welcome to TSDN!

Look, Java!=JavaScrip t.

Kind regards,
Dmjpro.
Sep 20 '07 #2
pbmods
5,821 Recognized Expert Expert
Moving to the Java forum....
Sep 20 '07 #3
Nepomuk
3,112 Recognized Expert Specialist
The Exception is thrown here:
Expand|Select|Wrap|Line Numbers
  1. java.lang.IllegalArgumentException: Document base D:\Arasu\projects\jwp\forums\build\web does not exist or is not a readable directory
  2.  
So, that directory does exist, doesn't it? And the user running it is allowed to access that directory? It is a directory, isn't it?

Greetings,
Nepomuk

PS.: Please use CODE tags when posting, even if it isn't really code but the output of your program - it makes it so much easier to read.
Sep 20 '07 #4

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by: =?Utf-8?B?QWxoYW1icmEgRWlkb3MgRGVzYXJyb2xsbw==?= | last post by:
Hi all, misters, I have Windows App .net 2.0 + vs 2005. My form launch several MSI's (app1.msi, app2.msi). I try launch MSI using Process.Start. I need know when detect MSI executable has finished ? Perphaps, I launch MSI and wait it until finish.
2
2265
by: sokeefe | last post by:
I am trying to edit the GUI of a project in Netbeans. In particular, I am trying to add new JButtons. I get a NullPointerException when I try to add an Event to any given JButton (even ones that already exist) in my application using the Design Editor. I go about this by right-clicking on the JButton in the design editor, navigating to Events -> Action -> actionPerformed. The auto-generated code appears for a brief moment before it...
1
3186
by: sokeefe | last post by:
I am trying to edit the GUI of a project in Netbeans. In particular, I am trying to add new JButtons. I get a NullPointerException when I try to add an Event to any given JButton (even ones that already exist) in my application using the Design Editor. I go about this by right-clicking on the JButton in the design editor, navigating to Events -> Action -> actionPerformed. The auto-generated code appears for a brief moment before it...
0
7936
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look ! Part I. Meaning of...
0
7874
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it. First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
1
7997
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
0
8227
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
1
5738
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules. He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms. Adolph will...
0
3853
by: TSSRALBI | last post by:
Hello I'm a network technician in training and I need your help. I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs. The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols. I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
0
3893
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
1
2383
by: 6302768590 | last post by:
Hai team i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
1
1469
muto222
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.

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