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我在我的Windows 10计算机上安装了weka 3.7,3.8和3.9。我无法访问3.8或3.9中的软件包管理器。无法访问软件包管理器
以下是我尝试使用的错误消息（单击“工具”菜单并选择“程序包管理器”）。
weka.gui.GUIChooserApp.createSingleton(GUIChooserApp.java:259)
weka.gui.GUIChooserApp.main(GUIChooserApp.java:1805)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
java.lang.reflect.Method.invoke(Unknown Source)
weka.gui.SplashWindow.invokeMain(SplashWindow.java:306)
weka.gui.GUIChooser.main(GUIChooser.java:92)
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)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at java.io.ObjectInputStream.resolveClass(Unknown Source)
at java.io.ObjectInputStream.readNonProxyDesc(Unknown Source)
at java.io.ObjectInputStream.readClassDesc(Unknown Source)
at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.readObject(Unknown Source)
at java.util.ArrayList.readObject(Unknown Source)
at sun.reflect.GeneratedMethodAccessor8.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at java.io.ObjectStreamClass.invokeReadObject(Unknown Source)
at java.io.ObjectInputStream.readSerialData(Unknown Source)
at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.readObject(Unknown Source)
at weka.core.packageManagement.DefaultPackageManager.loadInstalledPackageCache(DefaultPackageManager.java:1284)
at weka.core.packageManagement.DefaultPackageManager.getInstalledPackages(DefaultPackageManager.java:1178)
at weka.core.packageManagement.DefaultPackage.getMissingDependencies(DefaultPackage.java:460)
at weka.core.WekaPackageManager.loadCheck(WekaPackageManager.java:785)
at weka.core.WekaPackageManager.loadPackages(WekaPackageManager.java:1156)
at weka.core.WekaPackageManager.loadPackages(WekaPackageManager.java:1107)
at weka.gui.GenericObjectEditor.determineClasses(GenericObjectEditor.java:187)
at weka.gui.GenericObjectEditor.<clinit>(GenericObjectEditor.java:257)
at weka.gui.GUIChooserApp.<init>(GUIChooserApp.java:740)
at weka.gui.GUIChooserApp.createSingleton(GUIChooserApp.java:259)
at weka.gui.GUIChooserApp.main(GUIChooserApp.java:1805)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at weka.gui.SplashWindow.invokeMain(SplashWindow.java:306)
at weka.gui.GUIChooser.main(GUIChooser.java:92)
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$1.run(GUIChooserApp.java:822)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at java.io.ObjectInputStream.resolveClass(Unknown Source)
at java.io.ObjectInputStream.readNonProxyDesc(Unknown Source)
at java.io.ObjectInputStream.readClassDesc(Unknown Source)
at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.readObject(Unknown Source)
at java.util.ArrayList.readObject(Unknown Source)
at sun.reflect.GeneratedMethodAccessor8.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at java.io.ObjectStreamClass.invokeReadObject(Unknown Source)
at java.io.ObjectInputStream.readSerialData(Unknown Source)
at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.readObject(Unknown Source)
at weka.core.packageManagement.DefaultPackageManager.loadInstalledPackageCache(DefaultPackageManager.java:1284)
at weka.core.packageManagement.DefaultPackageManager.getInstalledPackages(DefaultPackageManager.java:1178)
at weka.core.WekaPackageManager.getInstalledPackages(WekaPackageManager.java:1829)
at weka.gui.PackageManager.getPackagesAndEstablishLookup(PackageManager.java:2365)
at weka.gui.PackageManager.getAllPackages(PackageManager.java:2445)
at weka.gui.PackageManager.<init>(PackageManager.java:1517)
at weka.gui.GUIChooserApp$11$1.run(GUIChooserApp.java:822)
A problem has occurred whilst trying to get all package information. Trying a cache refresh...
Refresh in progress. Please wait...
[DefaultPackageManager] downloaded 3 KB
[DefaultPackageManager] downloaded 64 KB
[DefaultPackageManager] downloaded 67 KB
[DefaultPackageManager] downloaded 95 KB
[DefaultPackageManager] downloaded 126 KB
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[DefaultPackageManager] downloaded 568 KB
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[DefaultPackageManager] downloaded 627 KB
[DefaultPackageManager] downloaded 631 KB
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[DefaultPackageManager] downloaded 819 KB
[DefaultPackageManager] downloaded 822 KB
[DefaultPackageManager] downloaded 840 KB
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[DefaultPackageManager] downloaded 1126 KB
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[DefaultPackageManager] downloaded 1253 KB
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[DefaultPackageManager] downloaded 1263 KB
[DefaultPackageManager] downloaded 1265 KB
[DefaultPackageManager] downloaded 1282 KB
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[DefaultPackageManager] downloaded 1319 KB
[DefaultPackageManager] downloaded 1322 KB
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[DefaultPackageManager] downloaded 1346 KB
[DefaultPackageManager] downloaded 1352 KB
[DefaultPackageManager] downloaded 1379 KB
[DefaultPackageManager] downloaded 1384 KB
[DefaultPackageManager] downloaded 1389 KB
[DefaultPackageManager] downloaded 1390 KB
[DefaultPackageManager] downloaded 1403 KB
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[DefaultPackageManager] downloaded 1545 KB
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[DefaultPackageManager] downloaded 1703 KB
[DefaultPackageManager] downloaded 1704 KB
[DefaultPackageManager] downloaded 1708 KB
[DefaultPackageManager] downloaded 1708 KB
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:2455)
weka.gui.PackageManager.<init>(PackageManager.java:1517)
weka.gui.GUIChooserApp$11$1.run(GUIChooserApp.java:822)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at java.io.ObjectInputStream.resolveClass(Unknown Source)
at java.io.ObjectInputStream.readNonProxyDesc(Unknown Source)
at java.io.ObjectInputStream.readClassDesc(Unknown Source)
at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.readObject(Unknown Source)
at java.util.ArrayList.readObject(Unknown Source)
at sun.reflect.GeneratedMethodAccessor8.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at java.io.ObjectStreamClass.invokeReadObject(Unknown Source)
at java.io.ObjectInputStream.readSerialData(Unknown Source)
at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.readObject(Unknown Source)
at weka.core.packageManagement.DefaultPackageManager.loadInstalledPackageCache(DefaultPackageManager.java:1284)
at weka.core.packageManagement.DefaultPackageManager.getInstalledPackages(DefaultPackageManager.java:1178)
at weka.core.WekaPackageManager.getInstalledPackages(WekaPackageManager.java:1829)
at weka.gui.PackageManager.getPackagesAndEstablishLookup(PackageManager.java:2365)
at weka.gui.PackageManager.getAllPackages(PackageManager.java:2455)
at weka.gui.PackageManager.<init>(PackageManager.java:1517)
at weka.gui.GUIChooserApp$11$1.run(GUIChooserApp.java:822)
Exception in thread "Thread-5" java.lang.NullPointerException
weka.gui.PackageManager.updateTable(PackageManager.java:2246)
weka.gui.PackageManager.<init>(PackageManager.java:2107)
weka.gui.GUIChooserApp$11$1.run(GUIChooserApp.java:822)
at weka.gui.PackageManager.updateTable(PackageManager.java:2246)
at weka.gui.PackageManager.<init>(PackageManager.java:2107)
at weka.gui.GUIChooserApp$11$1.run(GUIChooserApp.java:822)
尝试删除〜/ wekafiles/packages /中的installedPackageCache.ser文件，然后重新启动Weka。 – xro7
修复它。谢谢！ – Jen
我已经从标题中删除了标签并删除了Windows标签，因为问题并不直接关注Windows，而是weka。 – Cheesebaron