java.lang.ClassNotFoundException: org.pentaho.packageManagement.DefaultPackage java.net.URLClassLoader.findClass(Unknown Source) java.lang.ClassLoader.loadClass(Unknown Source) sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) java.lang.ClassLoader.loadClass(Unknown Source) java.lang.Class.forName0(Native Method) java.lang.Class.forName(Unknown Source) java.io.ObjectInputStream.resolveClass(Unknown Source) java.io.ObjectInputStream.readNonProxyDesc(Unknown Source) java.io.ObjectInputStream.readClassDesc(Unknown Source) java.io.ObjectInputStream.readOrdinaryObject(Unknown Source) java.io.ObjectInputStream.readObject0(Unknown Source) java.io.ObjectInputStream.readObject(Unknown Source) java.util.ArrayList.readObject(Unknown Source) sun.reflect.GeneratedMethodAccessor8.invoke(Unknown Source) sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) java.lang.reflect.Method.invoke(Unknown Source) java.io.ObjectStreamClass.invokeReadObject(Unknown Source) java.io.ObjectInputStream.readSerialData(Unknown Source) java.io.ObjectInputStream.readOrdinaryObject(Unknown Source) java.io.ObjectInputStream.readObject0(Unknown Source) java.io.ObjectInputStream.readObject(Unknown Source) weka.core.packageManagement.DefaultPackageManager.loadInstalledPackageCache(DefaultPackageManager.java:1284) weka.core.packageManagement.DefaultPackageManager.getInstalledPackages(DefaultPackageManager.java:1178) weka.core.WekaPackageManager.getInstalledPackages(WekaPackageManager.java:1829) weka.gui.PackageManager.getPackagesAndEstablishLookup(PackageManager.java:2365) weka.gui.PackageManager.getAllPackages(PackageManager.java:2445) weka.gui.PackageManager.<init>(PackageManager.java:1517) weka.gui.GUIChooserApp$11$1.run(GUIChooserApp.java:822)

Stack Overflow | Jen | 7 months ago
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    Cannot access package manager

    Stack Overflow | 7 months ago | Jen
    java.lang.ClassNotFoundException: org.pentaho.packageManagement.DefaultPackage java.net.URLClassLoader.findClass(Unknown Source) java.lang.ClassLoader.loadClass(Unknown Source) sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) java.lang.ClassLoader.loadClass(Unknown Source) java.lang.Class.forName0(Native Method) java.lang.Class.forName(Unknown Source) java.io.ObjectInputStream.resolveClass(Unknown Source) java.io.ObjectInputStream.readNonProxyDesc(Unknown Source) java.io.ObjectInputStream.readClassDesc(Unknown Source) java.io.ObjectInputStream.readOrdinaryObject(Unknown Source) java.io.ObjectInputStream.readObject0(Unknown Source) java.io.ObjectInputStream.readObject(Unknown Source) java.util.ArrayList.readObject(Unknown Source) sun.reflect.GeneratedMethodAccessor8.invoke(Unknown Source) sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) java.lang.reflect.Method.invoke(Unknown Source) java.io.ObjectStreamClass.invokeReadObject(Unknown Source) java.io.ObjectInputStream.readSerialData(Unknown Source) java.io.ObjectInputStream.readOrdinaryObject(Unknown Source) java.io.ObjectInputStream.readObject0(Unknown Source) java.io.ObjectInputStream.readObject(Unknown Source) weka.core.packageManagement.DefaultPackageManager.loadInstalledPackageCache(DefaultPackageManager.java:1284) weka.core.packageManagement.DefaultPackageManager.getInstalledPackages(DefaultPackageManager.java:1178) weka.core.WekaPackageManager.getInstalledPackages(WekaPackageManager.java:1829) weka.gui.PackageManager.getPackagesAndEstablishLookup(PackageManager.java:2365) weka.gui.PackageManager.getAllPackages(PackageManager.java:2445) weka.gui.PackageManager.<init>(PackageManager.java:1517) weka.gui.GUIChooserApp$11$1.run(GUIChooserApp.java:822)
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    Root Cause Analysis

    1. java.lang.ClassNotFoundException

      org.pentaho.packageManagement.DefaultPackage java.net.URLClassLoader.findClass(Unknown Source) java.lang.ClassLoader.loadClass(Unknown Source) sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) java.lang.ClassLoader.loadClass(Unknown Source) java.lang.Class.forName0(Native Method) java.lang.Class.forName(Unknown Source) java.io.ObjectInputStream.resolveClass(Unknown Source) java.io.ObjectInputStream.readNonProxyDesc(Unknown Source) java.io.ObjectInputStream.readClassDesc(Unknown Source) java.io.ObjectInputStream.readOrdinaryObject(Unknown Source) java.io.ObjectInputStream.readObject0(Unknown Source) java.io.ObjectInputStream.readObject(Unknown Source) java.util.ArrayList.readObject(Unknown Source) sun.reflect.GeneratedMethodAccessor8.invoke(Unknown Source) sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) java.lang.reflect.Method.invoke(Unknown Source) java.io.ObjectStreamClass.invokeReadObject(Unknown Source) java.io.ObjectInputStream.readSerialData(Unknown Source) java.io.ObjectInputStream.readOrdinaryObject(Unknown Source) java.io.ObjectInputStream.readObject0(Unknown Source) java.io.ObjectInputStream.readObject(Unknown Source) weka.core.packageManagement.DefaultPackageManager.loadInstalledPackageCache(DefaultPackageManager.java:1284) weka.core.packageManagement.DefaultPackageManager.getInstalledPackages(DefaultPackageManager.java:1178) weka.core.WekaPackageManager.getInstalledPackages(WekaPackageManager.java:1829) weka.gui.PackageManager.getPackagesAndEstablishLookup(PackageManager.java:2365) weka.gui.PackageManager.getAllPackages(PackageManager.java:2445) weka.gui.PackageManager.<init>(PackageManager.java:1517) weka.gui.GUIChooserApp$11$1.run(GUIChooserApp.java:822)

      at java.net.URLClassLoader.findClass()
    2. Java RT
      ObjectInputStream.readObject
      1. java.net.URLClassLoader.findClass(Unknown Source)
      2. java.lang.ClassLoader.loadClass(Unknown Source)
      3. sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
      4. java.lang.ClassLoader.loadClass(Unknown Source)
      5. java.lang.Class.forName0(Native Method)
      6. java.lang.Class.forName(Unknown Source)
      7. java.io.ObjectInputStream.resolveClass(Unknown Source)
      8. java.io.ObjectInputStream.readNonProxyDesc(Unknown Source)
      9. java.io.ObjectInputStream.readClassDesc(Unknown Source)
      10. java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
      11. java.io.ObjectInputStream.readObject0(Unknown Source)
      12. java.io.ObjectInputStream.readObject(Unknown Source)
      13. java.util.ArrayList.readObject(Unknown Source)
      14. sun.reflect.GeneratedMethodAccessor8.invoke(Unknown Source)
      15. sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
      16. java.lang.reflect.Method.invoke(Unknown Source)
      17. java.io.ObjectStreamClass.invokeReadObject(Unknown Source)
      18. java.io.ObjectInputStream.readSerialData(Unknown Source)
      19. java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
      20. java.io.ObjectInputStream.readObject0(Unknown Source)
      21. java.io.ObjectInputStream.readObject(Unknown Source)
      21 frames
    3. weka.core.packageManagement
      DefaultPackageManager.getInstalledPackages
      1. weka.core.packageManagement.DefaultPackageManager.loadInstalledPackageCache(DefaultPackageManager.java:1284)
      2. weka.core.packageManagement.DefaultPackageManager.getInstalledPackages(DefaultPackageManager.java:1178)
      2 frames
    4. weka-dev
      GUIChooserApp$11$1.run
      1. weka.core.WekaPackageManager.getInstalledPackages(WekaPackageManager.java:1829)
      2. weka.gui.PackageManager.getPackagesAndEstablishLookup(PackageManager.java:2365)
      3. weka.gui.PackageManager.getAllPackages(PackageManager.java:2445)
      4. weka.gui.PackageManager.<init>(PackageManager.java:1517)
      5. weka.gui.GUIChooserApp$11$1.run(GUIChooserApp.java:822)
      5 frames