Hi,
I am going nuts over this issue. Since today morning the hot deployment/code replacement stopped working with MyEclipse deployed to Tomcat 6.0. No configuration changed in both my IDE and the Tomcat AppServer. This was working fine for months and all of a sudden it is not working for me today.

I have tried the following:
1) Created a new workspace, checked out from CVS, deployed to Tomcat in Exploded mode, started application in debug - made code changes - the changes are not reflected.
2) Opened an older workspace which I am sure was working, deployed again to Tomcat in Exploded mode, started application in debug - made code changes - does not work.
3) Removed Tomcat completely, re-installed tried the above two steps again - still does not work.

The only work around is to deploy every time I make a code change and this is really affecting my deliverables.

Environment:
======================
Windows 7, MyEclipse Blue 9.1, Using Tomcat Server Connector to deploy to Tomcat 6.0.29
Deployment in Exploded mode and starting application in DEBUG mode

Please let me know if you need any more details from my side.
I am pasting the installation details below and attached the error log from the past two sessions. Similar errors are seen in the error log since today morning.

Looking forward to a faster resolution since this is greatly affecting my delivery schedule.

Thanks,
Saran

INSTALLATION DETAILS:
===========================
*** Date:
Thursday, March 29, 2012 9:42:33 PM CDT

** System properties:
OS=WindowsVista
OS version=6.1.0
Java version=1.6.0_13

*** MyEclipse details:
MyEclipse Blue Edition
Version: 9.1 Blue
Build id: 9.1-Blue-20110701


*** Eclipse details:
MyEclipse Blue Edition

Version: 9.1 Blue
Build id: 9.1-Blue-20110701


Eclipse Platform

Version: 3.6.1.r361_v20100909-9gF78GrkFqw7GrsZnvz0JWNTeb6fue6896L
Build id: M20100909-0800


Eclipse Java Development Tools

Version: 3.6.1.r361_v20100714-0800-7z8XFUSFLFlmgLc5z-Bvrt8-HVkH
Build id: M20100909-0800


Eclipse Plug-in Development Environment

Version: 3.6.1.r361_v20100727-7b7mFL-FET3dhESDgE5_bkJ
Build id: M20100909-0800


Eclipse Graphical Editing Framework GEF

Version: 3.6.1.v20100908-1100-777B181A3Bz-6B663E7974242
Build id: 201009132020


Eclipse RCP

Version: 3.6.1.r361_v20100827-9OArFLdFjY-ThSQXmKvKz0_T
Build id: M20100909-0800




Eclipse startup command=-os
win32
-ws
win32
-arch
x86
-showsplash
-launcher
C:\Users\Saran\AppData\Local\Genuitec\Profiles\Saran - MEBlue9\myeclipse-blue.exe
-name
Myeclipse-blue
--launcher.library
C:\Users\Saran\AppData\Local\Genuitec\Profiles\Saran - MEBlue9\../../Common/plugins/org.eclipse.equinox.launcher.i18n.win32.win32.x86_3.2.0.v201103301700\eclipse_3215.dll
-startup
C:\Users\Saran\AppData\Local\Genuitec\Profiles\Saran - MEBlue9\../../Common/plugins/org.eclipse.equinox.launcher_1.1.0.v20100507.jar
-install
C:\Users\Saran\AppData\Local\Genuitec\Profiles\Saran - MEBlue9
-configuration
C:\Users\Saran\AppData\Local\Genuitec\Profiles\Saran - MEBlue9\configuration
-vm
C:\Users\Saran\AppData\Local\Genuitec\Common\binary\com.sun.java.jdk.win32.x86_1.6.0.013\jre\bin\client\jvm.dll

Not sure if the Error log got properly attached. Pasting it here.
========================================

ERROR LOG:
===========================
!SESSION 2012-03-29 21:23:08.740 -----------------------------------------------
eclipse.buildId=unknown
java.version=1.6.0_13
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_US
Command-line arguments: -os win32 -ws win32 -arch x86

!ENTRY org.eclipse.jface 2 0 2012-03-29 21:23:35.588
!MESSAGE Keybinding conflicts occurred. They may interfere with normal accelerator operation.
!SUBENTRY 1 org.eclipse.jface 2 0 2012-03-29 21:23:35.588
!MESSAGE A conflict occurred for CTRL+F9:
Binding(CTRL+F9,
ParameterizedCommand(Command(org.eclipse.mylyn.tasks.ui.command.activateTask,Activate Task,
,
Category(org.eclipse.ui.category.navigate,Navigate,null,true),
,
,,true),null),
org.eclipse.ui.defaultAcceleratorConfiguration,
org.eclipse.ui.contexts.window,,,system)
Binding(CTRL+F9,
ParameterizedCommand(Command(RunSQLAction,Run SQL,
Run SQL,
Category(org.eclipse.ui.category.edit,Edit,null,true),
,
,,true),null),
org.eclipse.ui.defaultAcceleratorConfiguration,
org.eclipse.ui.contexts.window,,,system)
!SUBENTRY 1 org.eclipse.jface 2 0 2012-03-29 21:23:35.588
!MESSAGE A conflict occurred for SHIFT+DEL:
Binding(SHIFT+DEL,
ParameterizedCommand(Command(org.eclipse.datatools.sqltools.result.removeAllInstances,Remove All Visible Results,
,
Category(org.eclipse.datatools.sqltools.result.category,SQL Results View,null,true),
,
,,true),null),
org.eclipse.ui.defaultAcceleratorConfiguration,
org.eclipse.ui.contexts.window,,,system)
Binding(SHIFT+DEL,
ParameterizedCommand(Command(org.eclipse.ui.edit.cut,Cut,
Cut the selection to the clipboard,
Category(org.eclipse.ui.category.edit,Edit,null,true),
org.eclipse.ui.internal.handlers.WidgetMethodHandler@1877096,
,,true),null),
org.eclipse.ui.defaultAcceleratorConfiguration,
org.eclipse.ui.contexts.dialogAndWindow,,,system)
Binding(SHIFT+DEL,
ParameterizedCommand(Command(org.topcased.modeler.deleteModelObject,remove from Model,
Allows the user to delete the selected graph element and its associated model element in a Topcased editor.,
Category(org.eclipse.ui.category.edit,Edit,null,true),
,
,,true),null),
org.eclipse.ui.defaultAcceleratorConfiguration,
org.eclipse.ui.contexts.window,,,system)

!ENTRY org.eclipse.osgi 2 0 2012-03-29 21:24:13.808
!MESSAGE While loading class "org.eclipse.wst.jsdt.internal.core.JavaModelManager$16", thread "Thread[Worker-5,5,main]" timed out waiting (5000ms) for thread "Thread[Worker-8,5,main]" to finish starting bundle "org.eclipse.wst.jsdt.core_1.1.2.me201106211924 [926]". To avoid deadlock, thread "Thread[Worker-5,5,main]" is proceeding but "org.eclipse.wst.jsdt.internal.core.JavaModelManager$16" may not be fully initialized.
!STACK 0
org.osgi.framework.BundleException: State change in progress for bundle "reference:file:/C:/Users/Saran/AppData/Local/Genuitec/Common/plugins/org.eclipse.wst.jsdt.core_1.1.2.me201106211924.jar" by thread "Worker-8".
at org.eclipse.osgi.framework.internal.core.AbstractBundle.beginStateChange(AbstractBundle.java:1077)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:282)
at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:417)
at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:265)
at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:106)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:453)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:393)
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:469)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:422)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:410)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
at org.eclipse.wst.jsdt.internal.core.JavaModelManager$15.run(JavaModelManager.java:4182)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
Caused by: org.eclipse.osgi.framework.internal.core.AbstractBundle$BundleStatusException
... 16 more
Root exception:
org.eclipse.osgi.framework.internal.core.AbstractBundle$BundleStatusException
at org.eclipse.osgi.framework.internal.core.AbstractBundle.beginStateChange(AbstractBundle.java:1077)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:282)
at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:417)
at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:265)
at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:106)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:453)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:393)
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:469)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:422)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:410)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
at org.eclipse.wst.jsdt.internal.core.JavaModelManager$15.run(JavaModelManager.java:4182)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

!ENTRY com.genuitec.eclipse.core.common 1 0 2012-03-29 21:35:56.669
!MESSAGE Error collecting output paths
!STACK 0
java.lang.NullPointerException
at com.genuitec.eclipse.core.util.JavaMetaUtils.getOutputDirectoryPaths(JavaMetaUtils.java:453)
at com.genuitec.eclipse.j2eedt.core.J2EEProjectUtil.getOutputDirectoryPaths(Unknown Source)
at com.genuitec.eclipse.ast.deploy.core.packaging.DefaultPackagerStrategy.explodeDependentProjects(Unknown Source)
at com.genuitec.eclipse.ast.deploy.core.packaging.PackageUtils.explodeDependentProjects(Unknown Source)
at com.genuitec.eclipse.ast.deploy.core.WebDeployment.Ć(Unknown Source)
at com.genuitec.eclipse.ast.deploy.core.WebDeployment.doProjectTypeSpecificPostResyncAll(Unknown Source)
at com.genuitec.eclipse.ast.deploy.core.Deployment.resyncAll(Unknown Source)
at com.genuitec.eclipse.ast.deploy.core.ModuleDeployment.deployAsExplodedArchive(Unknown Source)
at com.genuitec.eclipse.ast.deploy.core.Deployment.deploy(Unknown Source)
at com.genuitec.eclipse.ast.deploy.core.jobs.C.Ä?(Unknown Source)
at com.genuitec.eclipse.ast.deploy.core.jobs.C.run(Unknown Source)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
!SESSION 2012-03-29 21:41:40.100 -----------------------------------------------
eclipse.buildId=unknown
java.version=1.6.0_13
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_US
Command-line arguments: -os win32 -ws win32 -arch x86

!ENTRY org.eclipse.jface 2 0 2012-03-29 21:42:10.931
!MESSAGE Keybinding conflicts occurred. They may interfere with normal accelerator operation.
!SUBENTRY 1 org.eclipse.jface 2 0 2012-03-29 21:42:10.931
!MESSAGE A conflict occurred for CTRL+F9:
Binding(CTRL+F9,
ParameterizedCommand(Command(org.eclipse.mylyn.tasks.ui.command.activateTask,Activate Task,
,
Category(org.eclipse.ui.category.navigate,Navigate,null,true),
,
,,true),null),
org.eclipse.ui.defaultAcceleratorConfiguration,
org.eclipse.ui.contexts.window,,,system)
Binding(CTRL+F9,
ParameterizedCommand(Command(RunSQLAction,Run SQL,
Run SQL,
Category(org.eclipse.ui.category.edit,Edit,null,true),
,
,,true),null),
org.eclipse.ui.defaultAcceleratorConfiguration,
org.eclipse.ui.contexts.window,,,system)
!SUBENTRY 1 org.eclipse.jface 2 0 2012-03-29 21:42:10.931
!MESSAGE A conflict occurred for SHIFT+DEL:
Binding(SHIFT+DEL,
ParameterizedCommand(Command(org.eclipse.datatools.sqltools.result.removeAllInstances,Remove All Visible Results,
,
Category(org.eclipse.datatools.sqltools.result.category,SQL Results View,null,true),
,
,,true),null),
org.eclipse.ui.defaultAcceleratorConfiguration,
org.eclipse.ui.contexts.window,,,system)
Binding(SHIFT+DEL,
ParameterizedCommand(Command(org.eclipse.ui.edit.cut,Cut,
Cut the selection to the clipboard,
Category(org.eclipse.ui.category.edit,Edit,null,true),
org.eclipse.ui.internal.handlers.WidgetMethodHandler@139e9f8,
,,true),null),
org.eclipse.ui.defaultAcceleratorConfiguration,
org.eclipse.ui.contexts.dialogAndWindow,,,system)
Binding(SHIFT+DEL,
ParameterizedCommand(Command(org.topcased.modeler.deleteModelObject,remove from Model,
Allows the user to delete the selected graph element and its associated model element in a Topcased editor.,
Category(org.eclipse.ui.category.edit,Edit,null,true),
,
,,true),null),
org.eclipse.ui.defaultAcceleratorConfiguration,
org.eclipse.ui.contexts.window,,,system)

!ENTRY org.eclipse.osgi 2 0 2012-03-29 21:42:29.091
!MESSAGE While loading class "org.eclipse.wst.jsdt.internal.core.JavaModelManager$16", thread "Thread[Worker-6,5,main]" timed out waiting (5000ms) for thread "Thread[Worker-15,5,main]" to finish starting bundle "org.eclipse.wst.jsdt.core_1.1.2.me201106211924 [926]". To avoid deadlock, thread "Thread[Worker-6,5,main]" is proceeding but "org.eclipse.wst.jsdt.internal.core.JavaModelManager$16" may not be fully initialized.
!STACK 0
org.osgi.framework.BundleException: State change in progress for bundle "reference:file:/C:/Users/Saran/AppData/Local/Genuitec/Common/plugins/org.eclipse.wst.jsdt.core_1.1.2.me201106211924.jar" by thread "Worker-15".
at org.eclipse.osgi.framework.internal.core.AbstractBundle.beginStateChange(AbstractBundle.java:1077)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:282)
at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:417)
at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:265)
at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:106)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:453)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:393)
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:469)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:422)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:410)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
at org.eclipse.wst.jsdt.internal.core.JavaModelManager$15.run(JavaModelManager.java:4182)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
Caused by: org.eclipse.osgi.framework.internal.core.AbstractBundle$BundleStatusException
... 16 more
Root exception:
org.eclipse.osgi.framework.internal.core.AbstractBundle$BundleStatusException
at org.eclipse.osgi.framework.internal.core.AbstractBundle.beginStateChange(AbstractBundle.java:1077)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:282)
at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:417)
at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:265)
at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:106)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:453)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:393)
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:469)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:422)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:410)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
at org.eclipse.wst.jsdt.internal.core.JavaModelManager$15.run(JavaModelManager.java:4182)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

saranova ,

Sorry that you are seeing this issue.

1. Can you check if you have changed anything in the project > Properties > MyEclipse > Deployment Assembly ?

2. Can you please try deploying the project to MyEclipse Integrated Tomcat to check how it works?

3. Can you also try creating a simple web project and check if that hot deploys fine on Tomcat 6?

Let us know how it works for you.

Swapna,
Tried the points you had suggested.

1. Can you check if you have changed anything in the project > Properties > MyEclipse > Deployment Assembly ?
I do not see the 'Deployment Assembly' as an option. Are you referring to Project Properties->MyEclipse->Web->deployment tab? This did not change.

2. Can you please try deploying the project to MyEclipse Integrated Tomcat to check how it works?
Deployed to MyEclipse Integrated Tomcat - started in Debug mode - made code changes - Changes are still not reflected.

3. Can you also try creating a simple web project and check if that hot deploys fine on Tomcat 6?
Created a simple struts web application - deployed to both MyEclipse Integrated Tomcat and tomcat 6 - AND IT WORKS! - when I debug and make changes it is perfectly working fine.

So what has gone wrong in my existing project? What should I do to get that project working again?

Regards,
Saravanan

saranova,

The deployment assembly page is part of MyEclipse 10, so if you're on another version, you wouldn't see it (and it wouldn't affect your process) - so we can ignore this.

The fact that your issue is not resolved even with another Tomcat install AND the fact that it does work with a new web project indicates that the problem is with your project and not with the Tomcat installation.

Could you go to Project > Properties > Java Build Path and check the output folder for your source folders? You would need to check the output folder that is globally set and by chance if you have set an output folder per source folder (which should not be required). The output folder should be set to WebRoot/WEB-INF/classes

What if you make a change in a JSP or simple HTML file and save that - are those changes reflected without redeployment?

Could you also paste or attach your .classpath and .project files here please?

Brian - here are the details:
The output folder for my main war project is set to: myProjectName/Web Content/WEB-INF/classes

If I make a change to JSP or .properties file - it is reflected immediately in the deployed tomcat location - I can see that the timestamp changes. It is only the .java files for which the change does not get reflected.

.classpath file
=======================

<?xml version="1.0" encoding="UTF-8"?>
<classpath>
<classpathentry kind="src" output="Web Content/WEB-INF/classes" path="Java Source"/>
<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/J2SE-1.5"/>
<classpathentry kind="con" path="org.maven.ide.eclipse.MAVEN2_CLASSPATH_CONTAINER"/>
<classpathentry kind="con" path="org.eclipse.jst.j2ee.internal.web.container"/>
<classpathentry kind="con" path="org.eclipse.jst.j2ee.internal.module.container"/>
<classpathentry kind="output" path="Web Content/WEB-INF/classes"/>
</classpath>



.project file (project names changed for confidentiality)
=========================
<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>myWarProject</name>
<comment></comment>
<projects>
<project>project 1</project>
<project>project 2</project>
<project>project 3</project>
<project>project 4</project>
<project>project 5</project>
<project>project 6</project>
<project>project 7</project>
</projects>
<buildSpec>
<buildCommand>
<name>org.eclipse.wst.common.project.facet.core.builder</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>org.eclipse.wst.jsdt.core.javascriptValidator</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>com.genuitec.eclipse.j2eedt.core.WebClasspathBuilder</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>org.eclipse.jdt.core.javabuilder</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>com.genuitec.eclipse.j2eedt.core.J2EEProjectValidator</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>com.genuitec.eclipse.j2eedt.core.DeploymentDescriptorValidator</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>com.ibm.etools.webtools.LibDirBuilder</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>com.ibm.etools.webtools.additions.linksbuilder</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>com.ibm.etools.j2ee.LibCopyBuilder</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>com.ibm.etools.ctc.serviceprojectbuilder</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>com.ibm.etools.struts.StrutsBuilder</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>org.eclipse.wst.validation.validationbuilder</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>org.maven.ide.eclipse.maven2Builder</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>com.genuitec.eclipse.ast.deploy.core.DeploymentBuilder</name>
<arguments>
</arguments>
</buildCommand>
</buildSpec>
<natures>
<nature>com.genuitec.eclipse.ast.deploy.core.deploymentnature</nature>
<nature>org.eclipse.jem.workbench.JavaEMFNature</nature>
<nature>com.genuitec.eclipse.j2eedt.core.webnature</nature>
<nature>org.maven.ide.eclipse.maven2Nature</nature>
<nature>com.ibm.etools.beaninfo.BeaninfoNature</nature>
<nature>com.ibm.etools.j2ee.WebNature</nature>
<nature>org.eclipse.jdt.core.javanature</nature>
<nature>com.ibm.etools.ctc.javaprojectnature</nature>
<nature>com.ibm.etools.struts.StrutsNature</nature>
<nature>org.eclipse.wst.jsdt.core.jsNature</nature>
<nature>org.eclipse.wst.common.project.facet.core.nature</nature>
<nature>org.eclipse.wst.common.modulecore.ModuleCoreNature</nature>
</natures>
</projectDescription>

Hi Support team - thanks for your help and time.
I have solved the mystery. For some reason the maven dependency was picking up my compiled jar files instead of the workspace projects. When I closely examined the Maven dependency hierarchy I found that my dependent projects where being referenced as jar files and not actual source contents. Now everything is back to normal and hot code replacement works fine.

Thanks again for your help, support and time.

Best Regards,
Saran

Saran,

Glad that you got it working.
Do let us know if you see any issues.

All is well :)