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  1. ,
    via oracle.com by Unknown author

    App tries to load in a class through its string name using forName method in class Class, findSystemClass method in class ClassLoader, loadClass method in class ClassLoader but no definition for the class with the specified name could be found.

  2. ,

    Unless you are involved in dynamic class loading and using the Java Reflection API, chances are that the ClassNotFoundException error you are getting is not from your application code but from a referencing API.

Solutions on the web

via Coderanch by Rohit Kumar, 1 year ago
This exception has no message.
via Coderanch by Chan Ag, 11 months ago
via https://bugzilla.redhat.com/bugzilla/ by Eiichi Nagai, 2 years ago
java.lang.reflect.InvocationTargetException at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) at java.lang.reflect.Constructor.newInstance(Unknown Source) at oracle.apps.ad.clone.util.CloneProcessor.run(CloneProcessor.java:67) at java.lang.Thread.run(Unknown Source)Caused by: java.lang.NoClassDefFoundError: oracle/jdbc/OracleDriver at oracle.apps.ad.util.DBUtil.registerDriver(DBUtil.java:153) at oracle.apps.ad.util.DBUtil.<init>(DBUtil.java:102) at oracle.apps.ad.tools.configuration.FileSysDBCtxMerge.getDBConnection(FileSysDBCtxMerge.java:759) at oracle.apps.ad.tools.configuration.FileSysDBCtxMerge.initializeParams(FileSysDBCtxMerge.java:147) at oracle.apps.ad.tools.configuration.FileSysDBCtxMerge.setParams(FileSysDBCtxMerge.java:128) at oracle.apps.ad.context.CtxValueMgt.mergeCustomInFiles(CtxValueMgt.java:1787) at oracle.apps.ad.context.CtxValueMgt.processCtxFile(CtxValueMgt.java:1606) at oracle.apps.ad.clone.ApplyDBTechStack.runCVM(ApplyDBTechStack.java:646) at oracle.apps.ad.clone.ApplyDBTechStack.runAutoConfig(ApplyDBTechStack.java:699) at oracle.apps.ad.clone.ApplyDBTechStack.doConf(ApplyDBTechStack.java:369) at oracle.apps.ad.clone.ApplyDBTechStack.doApply(ApplyDBTechStack.java:397) at oracle.apps.ad.clone.ApplyDBTechStack.<init>(ApplyDBTechStack.java:313) ... 6 moreCaused by: java.lang.ClassNotFoundException: oracle.jdbc.OracleDriver at java.net.URLClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) ... 18 more