Bom dia Fernando...
Eu tambem j� passei por esse problema, no meu caso, era que o path da maquina estava errado e apontava para uma JDK antiga.
Se vc tiver Oracle instalado na sua maquina e este for antigo,  a JRE dele pode estar atrapalhando, at� mesmo um cliente Oracle instalado e mau configurado, pode influenciar...fa�a uma limpeza nas suas variaveis de ambiente, remova a linha referente ao Oracle e v� se funciona.
Se vc ainda n�o tiver, tente instalar no minimo o j2sdk1.4.2_05, pelo seu erro o Eclipse n�o esta encontrando algumas classes.
 
Espero ter ajudado...
 
___________________________
[]'s
Marcelo Leite
 
----- Original Message -----
Sent: Tuesday, November 16, 2004 4:54 PM
Subject: [JUG-Petro] Erro na configura��o do Eclipse


Quando eu tendo estartar o Eclipse, ele d� a seguinte janela...

ENTRY org.eclipse.osgi Nov 16, 2004 16:52:17.64
!MESSAGE Error registering XML parser services.
!STACK 0
java.lang.ClassNotFoundException: javax.xml.parsers.SAXParserFactory
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at
org.eclipse.core.runtime.adaptor.EclipseAdaptor.registerEndorsedXMLParser(Ec
lipseAdaptor.java:272)
at
org.eclipse.core.runtime.adaptor.EclipseAdaptor.frameworkStart(EclipseAdapto
r.java:253)
at
org.eclipse.osgi.framework.internal.core.SystemBundleActivatorstart(SystemB
undleActivator.java:61)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleConte
xtImpl.java:958)
at java.security.AccessController.doPrivileged(Native Method)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(Bu
ndleContextImpl.java:954)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleConte
xtImpl.java:937)
at
org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(Sta
rtLevelManager.java:553)
at
org.eclipse.osgi.framework.internal.core.StartLevelManager.incFWSL(StartLeve
lManager.java:477)
at
org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(S
tartLevelManager.java:273)
at
org.eclipse.osgi.framework.internal.core.StartLevelManager.launch(StartLevel
Manager.java:243)
at
org.eclipse.osgi.framework.internal.core.SystemBundle.resume(SystemBundle.ja
va:166)
at
org.eclipse.osgi.framework.internal.core.Framework.launch(Framework.java:425
)
at org.eclipse.osgi.framework.internal.core.OSGi.launch(OSGi.java:51)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.startup(EclipseStarterjava:
216)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:127)
at java.lang.reflect.Method.invoke(Native Method)
at org.eclipse.core.launcher.Main.basicRun(Main.java:183)
at org.eclipse.core.launcher.Main.run(Main.java:644)
at org.eclipse.core.launcher.Main.main(Main.java:628)

!ENTRY org.eclipse.osgi Nov 16, 2004 16:52:17.220
!MESSAGE Startup error
!STACK 1
java.lang.NoClassDefFoundError: org/xml/sax/helpers/DefaultHandler
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
at
org.eclipse.core.runtime.adaptor.PluginConverterImpl.parsePluginInfo(PluginC
onverterImpl.java:552)
at
org.eclipse.core.runtime.adaptor.PluginConverterImpl.fillPluginInfo(PluginCo
nverterImpl.java:111)
at
org.eclipse.core.runtime.adaptor.PluginConverterImplconvertManifest(PluginC
onverterImpl.java:655)
at
org.eclipse.core.runtime.adaptor.EclipseBundleData.generateManifest(EclipseB
undleData.java:219)
at
org.eclipse.core.runtime.adaptor.EclipseBundleDataloadManifest(EclipseBundl
eData.java:177)
at
org.eclipse.core.runtime.adaptor.EclipseBundleData.getManifest(EclipseBundle
Data.java:159)
at
org.eclipse.core.runtime.adaptor.EclipseBundleData.loadFromManifest(EclipseB
undleData.java:266)
at
org.eclipse.osgi.framework.internal.defaultadaptor.DefaultBundleData.initial
izeNewBundle(DefaultBundleData.java:77)
at
org.eclipse.osgi.framework.internal.defaultadaptor.DefaultAdaptor$1.begin(De
faultAdaptor.java:451)
at
org.eclipse.osgi.framework.internal.core.Framework.installWorkerPrivileged(F
ramework.java:746)
at
org.eclipse.osgi.framework.internal.coreFramework$2.run(Framework.java:664)
at java.security.AccessController.doPrivileged(Native Method)
at
org.eclipse.osgi.framework.internal.core.Framework.installWorker(Framework.j
ava:715)
at
org.eclipse.osgi.framework.internal.core.Framework.installBundle(Framework.j
ava:659)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.installBundle(Bun
dleContextImpl.java:219)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.installBundles(EclipseStarte
r.java:800)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.loadBasicBundles(EclipseStar
terjava:429)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.startup(EclipseStarter.java:
222)
at
org.eclipse.core.runtime.adaptorEclipseStarter.run(EclipseStarter.java:127)
at java.lang.reflect.Method.invoke(Native Method)
at org.eclipse.core.launcher.Main.basicRun(Main.java:183)
at org.eclipse.core.launcher.Main.run(Main.java:644)
at org.eclipse.core.launcher.Main.main(Main.java:628)

!ENTRY org.eclipse.osgi Nov 16, 2004 16:52:17.283
!MESSAGE Bundle
[EMAIL PROTECTED]:file:c:/eclipse/plugins/org.eclipse.core.runtime_3.0.0/
[1] was not resolved.


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