运行 Codename One Simulator 时突然出现 Eclipse ClassNotFoundException

Question

当运行模拟器时，Eclipse 开始失败。这以前是有效的，我们没有改变任何东西。

java.lang.ClassNotFoundException: com.mypackage.MyMainClass
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.findSystemClass(Unknown Source)
at com.codename1.impl.javase.ClassPathLoader.findClass(ClassPathLoader.java:116)
at com.codename1.impl.javase.ClassPathLoader.loadClass(ClassPathLoader.java:55)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at com.codename1.impl.javase.Executor.run(Executor.java:219)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access0(Unknown Source)
at java.awt.EventQueue.run(Unknown Source)
at java.awt.EventQueue.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)

Description Resource Path Location Type
Project 'ProjectName' is missing required library: 'lib/impl/cls' ProjectName Build path Build Path Problem
Description Resource Path Location Type
Project 'ProjectName' is missing required library: 'lib/impl/stubs' ProjectName Build path Build Path Problem

Eclipse 清理项目、项目刷新和代号一库刷新未解决问题。手动删除输出文件夹（build、bin 和 dist）也没有。

Answer 1

在构建路径中：

删除 imb/impl/cls 和 lib/impl/stubs 条目（见下图）
应用并刷新项目
返回并再次添加这些库应用，现在项目应该没问题了

运行 Codename One Simulator 时突然出现 Eclipse ClassNotFoundException

Sudden Eclipse ClassNotFoundException When running Codename One Simulator

eclipse

codenameone