每天都有来自每个班级的java.lang.NoClassDefFoundError [英] java.lang.NoClassDefFoundError from every class every day

问题描述

我尝试重新安装netbeans，我尝试重新安装java。我不确定发生了什么但我从每个班级中随机获得此异常，直到我重新启动netbeans。有类似问题的人？

I have tried reinstalling netbeans, I have tried reinstalling java. I'm not sure what's going on but I get this exception at random from every class until I restart netbeans. Anyone with similar problems?

运行：

Exception in thread "main" java.lang.NoClassDefFoundError: com/company/utilities/formatters/DateFinder
    at com.protocase.db.DatabaseAdapter.<init>(DatabaseAdapter.java:44)
    at packagingqueries.PackagingQueries.getBatchIDsForOperation(PackagingQueries.java:42)
    at packagingqueries.PackagingQueries.main(PackagingQueries.java:20)
Caused by: java.lang.ClassNotFoundException: com.protocase.utilities.formatters.DateFinder
    at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
    at java.security.AccessController.doPrivileged(Native Method)

推荐答案

有时，NetBeans本地缓存目录已损坏（因为应用程序先前崩溃或因为发生了其他/未定义的事件）。 NetBeans开始表现得很奇怪。重新安装没有帮助，因为并不总是删除本地缓存目录。

Sometimes, the NetBeans local cache directory becomes corrupted (either because the application crashed earlier or because something else/undefined happened). NetBeans starts to behave strangely. Re-installing does not help, because the local cache directory is not always deleted.

如果您100％确定您的应用程序没有路径问题：

If you are 100% sure your application does not have a path problem:

1. 关闭NetBeans


2. 如果您在Windows上，请转到c：\ Users \youruserid \。 netbeans \7.0（否则找到系统上的相应目录）


3. 完全删除内容


4. 重新启动NetBeans

1. Close NetBeans
2. If you are on Windows go to c:\Users\youruserid\.netbeans\7.0 (else find the corresponding directory on your system)
3. Delete the content completely
4. Restart NetBeans

NetBeans将重新创建此目录的内容。这个可以解决您的问题。如果没有，那么您的问题在于您的应用程序的配置或肯定在损坏的库中。

NetBeans will recreate the content of this directory. This may solve your issue. If it does not, then your issue is in the configuration of your application or in a corrupted library for sure.

如果存储这些文件的位置空间不足对于写作，这个问题可能会出现。像往常一样，人们需要腾出空间......

If the location where these files are stored runs out of space for writing, this problem can arise. As usual, one needs to make space...

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