I am getting the following information in log file when I try to open Eclipse on my desktop. Kindly help

!SESSION 2011-04-13 17:11:48.546 -----------------------------------------------
eclipse.buildId=M20110210-1200
java.version=1.6.0_22
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_US
Framework arguments: -product org.eclipse.epp.package.java.product
Command-line arguments: -os win32 -ws win32 -arch x86 -product org.eclipse.epp.package.java.product

!ENTRY org.eclipse.osgi 4 0 2011-04-13 17:11:53.531
!MESSAGE Application error
!STACK 1
java.lang.NoClassDefFoundError: com/mercury/javashared/agentloader/AgentBootstrap
at org.eclipse.swt.widgets.Display.<init>(Display.java:471)
at org.eclipse.ui.internal.Workbench.createDisplay(Workbench.java:708)
at org.eclipse.ui.PlatformUI.createDisplay(PlatformUI.java:161)
at org.eclipse.ui.internal.ide.application.IDEApplication.createDisplay(IDEApplication.java:145)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:88)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:369)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
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 org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:620)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:575)
at org.eclipse.equinox.launcher.Main.run(Main.java:1408)
Caused by: java.lang.ClassNotFoundException: com.mercury.javashared.agentloader.AgentBootstrap
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:506)
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:248)
... 17 more

balaji_leo,

Can you answer some questions for me to understand the issue better ?

1) Are you working with Eclipse or MyEclipse ? If its MyEclipse then please share your installation details from MyEclipse > Installation Summary > Installation Details. Paste them here for me.

2) Did you install any third party plugins lately which might have caused this issue ?

3)Open the IDE with - clean as argument. Here is the FAQ for it :
http://myeclipseide.com/PNphpBB2-viewtopic-t-10280.html
Check if the issue persists.

4) Here is a thread which discusses the same issue in Eclipse. Check if the solution works for you:
http://stackoverflow.com/questions/1042824/not-able-to-run-eclipse-application-cant-even-start-eclipse-ide

I suggest you post it to Eclipse forums for better support.

Thanks a lot Swapna... I am using Eclipse and the problem was with the environment variable set up. thread for Eclipse issue resolved my problem :)

balaji_leo,

Glad that it is working.