Why jdk6x is not compatiable with Tomcat7? why jdk7x compiled classes are not working in jdk6x

Hello,

I installed jdk7x and tomcat7.2 on my windows7. When I compiled the classes and placed these classes to my dedicated server then these classes were not working due to incompatible version of jdk as on dedicated server there is jdk6x.0.13 and tomcat6.

I removed jdk7x from my machine and installed back and now its version is:

C:\Program Files (x86)\Java\Tomcat7.2\webapps\ROOT\WEB-INF\classes>java -version

java version "1.6.0_13"
Java(TM) SE Runtime Environment (build 1.6.0_13-b03)
Java HotSpot(TM) Client VM (build 11.3-b02, mixed mode, sharing)

I start getting the following error while starting the tomcat:

java.lang.UnsatisfiedLinkError: C:\Program Files (x86)\Java\Tomcat7.2\bin\tcnati
ve-1.dll: Can't load AMD 64-bit .dll on a IA 32-bit platform
        at java.lang.ClassLoader$NativeLibrary.load(Native Method)
        at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1778)
        at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1703)
        at java.lang.Runtime.loadLibrary0(Runtime.java:823)
        at java.lang.System.loadLibrary(System.java:1030)
        at org.apache.tomcat.jni.Library.<init>(Library.java:42)
        at org.apache.tomcat.jni.Library.initialize(Library.java:174)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.catalina.core.AprLifecycleListener.init(AprLifecycleListen
er.java:165)
        at org.apache.catalina.core.AprLifecycleListener.isAprAvailable(AprLifec
ycleListener.java:81)
        at org.apache.catalina.connector.Connector.setProtocol(Connector.java:54
1)
        at org.apache.catalina.connector.Connector.<init>(Connector.java:71)
        at org.apache.catalina.startup.ConnectorCreateRule.begin(ConnectorCreate
Rule.java:62)
        at org.apache.tomcat.util.digester.Digester.startElement(Digester.java:1
276)
        at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startEle
ment(AbstractSAXParser.java:501)
        at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.
emptyElement(AbstractXMLDocumentParser.java:179)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImp
l.scanStartElement(XMLDocumentFragmentScannerImpl.java:1339)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImp
l$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2747)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(X
MLDocumentScannerImpl.java:648)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImp
l.scanDocument(XMLDocumentFragmentScannerImpl.java:510)
        at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(X
ML11Configuration.java:807)
        at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(X
ML11Configuration.java:737)
        at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.
java:107)
        at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Ab
stractSAXParser.java:1205)
        at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.p
arse(SAXParserImpl.java:522)
        at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1537)
        at org.apache.catalina.startup.Catalina.load(Catalina.java:555)
        at org.apache.catalina.startup.Catalina.load(Catalina.java:596)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.catalina.startup.Bootstrap.load(Bootstrap.java:281)
        at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:449)
Aug 21, 2011 10:39:45 PM org.apache.catalina.core.AprLifecycleListener init
INFO: The APR based Apache Tomcat Native library which allows optimal performanc
e in production environments was not found on the java.library.path: C:\Program
Files (x86)\Java\jdk7x\bin;.;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windo
ws;c:\Oracle\product\11.2.0\dbhome_1\bin;%CommonProgramFiles%\Microsoft Shared\W
indows Live;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\S
ystem32\WindowsPowerShell\v1.0\;C:\Program Files\WIDCOMM\Bluetooth Software\;C:\
Program Files\WIDCOMM\Bluetooth Software\syswow64;\;C:\Program Files (x86)\Sony\
VAIO Startup Setting Tool;C:\Program Files (x86)\Java\jre7\bin;C:\Program Files
(x86)\Java\jdk7x\bin;C:\Program Files (x86)\QuickTime\QTSystem\;C:\Program Files
(x86)\SSH Communications Security\SSH Secure Shell
Aug 21, 2011 10:39:45 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["http-bio-7070"]
Aug 21, 2011 10:39:45 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["ajp-bio-8009"]
Aug 21, 2011 10:39:45 PM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 491 ms
Aug 21, 2011 10:39:45 PM org.apache.catalina.core.StandardService startInternal
INFO: Starting service Catalina
Aug 21, 2011 10:39:45 PM org.apache.catalina.core.StandardEngine startInternal
INFO: Starting Servlet Engine: Apache Tomcat/7.0.20
Aug 21, 2011 10:39:45 PM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory ROOT
Aug 21, 2011 10:39:46 PM org.apache.catalina.core.ContainerBase addChildInternal

SEVERE: ContainerBase.addChild: start:
org.apache.catalina.LifecycleException: Failed to start component [StandardEngin
e[Catalina].StandardHost[localhost].StandardContext[]]
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:152)
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase
.java:812)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:78
7)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:607)

at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.jav
a:1055)
        at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.j
ava:978)
        at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:472
)
        at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1322)
        at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java
:311)
        at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(Lifecycl
eSupport.java:119)
        at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBa
se.java:90)
        at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase
.java:389)
        at org.apache.catalina.util.LifecycleBase.setState(LifecycleBase.java:33
4)
        at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.ja
va:1041)
        at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java
:774)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:148)
        at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.ja
va:1033)
        at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.
java:291)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:148)
        at org.apache.catalina.core.StandardService.startInternal(StandardServic
e.java:443)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:148)
        at org.apache.catalina.core.StandardServer.startInternal(StandardServer.
java:727)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:148)
        at org.apache.catalina.startup.Catalina.start(Catalina.java:621)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:322)
        at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:450)
Caused by: java.lang.NoSuchMethodError: javax.servlet.ServletContext.getSessionC
ookieConfig()Ljavax/servlet/SessionCookieConfig;
        at org.apache.catalina.deploy.WebXml.configureContext(WebXml.java:1308)
        at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.jav
a:1327)
        at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfi
g.java:896)
        at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfi
g.java:322)
        at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(Lifecycl
eSupport.java:119)
        at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBa
se.java:90)
        at org.apache.catalina.core.StandardContext.startInternal(StandardContex
t.java:5103)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:148)
        ... 29 more
Aug 21, 2011 10:39:50 PM org.apache.catalina.startup.HostConfig deployDirectory
SEVERE: Error deploying web application directory ROOT
java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catal
ina.LifecycleException: Failed to start component [StandardEngine[Catalina].Stan
dardHost[localhost].StandardContext[]]
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase
.java:816)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:78
7)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:607)

at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.jav
a:1055)
        at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.j
ava:978)
        at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:472
)
        at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1322)
        at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java
:311)
        at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(Lifecycl
eSupport.java:119)
        at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBa
se.java:90)
        at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase
.java:389)
        at org.apache.catalina.util.LifecycleBase.setState(LifecycleBase.java:33
4)
        at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.ja
va:1041)
        at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java
:774)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:148)
        at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.ja
va:1033)
        at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.
java:291)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:148)
        at org.apache.catalina.core.StandardService.startInternal(StandardServic
e.java:443)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:148)
        at org.apache.catalina.core.StandardServer.startInternal(StandardServer.
java:727)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:148)
        at org.apache.catalina.startup.Catalina.start(Catalina.java:621)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:322)
        at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:450)
Aug 21, 2011 10:39:50 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["http-bio-7070"]
Aug 21, 2011 10:39:50 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["ajp-bio-8009"]
Aug 21, 2011 10:39:50 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in 5218 ms

I installed back jdk7x 64bit and its working fine now and server started properly:

Aug 21, 2011 11:06:09 PM org.apache.catalina.core.AprLifecycleListener init
INFO: Loaded APR based Apache Tomcat Native library 1.1.22.
Aug 21, 2011 11:06:09 PM org.apache.catalina.core.AprLifecycleListener init
INFO: APR capabilities: IPv6 [false], sendfile [true], accept filters [false], r
andom [true].
Aug 21, 2011 11:06:12 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["http-apr-7070"]
Aug 21, 2011 11:06:12 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["ajp-apr-8009"]
Aug 21, 2011 11:06:12 PM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 3284 ms
Aug 21, 2011 11:06:12 PM org.apache.catalina.core.StandardService startInternal
INFO: Starting service Catalina
Aug 21, 2011 11:06:12 PM org.apache.catalina.core.StandardEngine startInternal
INFO: Starting Servlet Engine: Apache Tomcat/7.0.20
Aug 21, 2011 11:06:12 PM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory ROOT
Aug 21, 2011 11:06:14 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["http-apr-7070"]
Aug 21, 2011 11:06:14 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["ajp-apr-8009"]
Aug 21, 2011 11:06:14 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in 2621 ms

I believe Java is platform free but why compiled classes of jdk7x are not running of jdk6x or how can fix this problem?

Best regards

The problem isn't with JDK6 vs JDK7, but with 32-bit vs 64-bit. The message says so - the 32-bit Tomcat couldn't load a 64-bit DLL.

Dear Rob,

On the same tomcat 7.2 version I re-installed jdk6 and now its working. I downloaded jdk-7-ea-bin-b137-windows-x64-07_apr_2011

Best regards