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I installed NB3.3 release on RedHat Linux 7.1. I get this when I launch: javax.xml.parsers.FactoryConfigurationError: java.lang.ClassNotFoundException: org.netbeans.core.xml.NbSAXParserFactoryImpl ... It never actually comes up after this.
this usually is caused by conflicting jar files in your <jdkhome>/jre/lib/ext. Please check.
A Trung said, check <jdkhome>/jre/lib/ext and remove conflicting xml parsers jar files (xerces.jar, jaxp.jar etc.)
For more details check issue #11020.
Removing jars from <jdkhome>/jre/lib/ext solved this problem. Thanks.
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*** This issue has been marked as a duplicate of 17358 ***