java - 登录应用程序上的 Java Swing NullPointerException 错误

Question

我正在使用 java swing 制作一个登录应用程序，特别是使用 Eclipse IDE Extension，它从制作的可视化设计中生成源代码，IDE 注意到我的代码没有任何错误，但我得到了错误信息说

java.lang.NullPointerException
    at me.garbage.Logger.initialize(UwULogger.java:46)
    at me.garbage.Logger.<init>(UwULogger.java:39)
    at me.garbage.Logger$1.run(UwULogger.java:26)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
    at java.awt.EventQueue.access$500(EventQueue.java:97)
    at java.awt.EventQueue$3.run(EventQueue.java:709)
    at java.awt.EventQueue$3.run(EventQueue.java:703)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)

扩展名是 WindowBuilder 1.9.5，我使用的是 J8。

标签： javaswingnullpointerexception