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《Java开发典型模块大全》 数码照片管理模块按照使用说明书步骤做了，但不能得到结果。
发表在Java图书答疑
2009-10-26
是否精华
是
否
版块置顶:
是
否
报错内容如下：
java.lang.ClassNotFoundException: org.apache.derby.jdbc.EmbeddedDriver //添加了从网上下载的derby
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:169)
at com.mwq.album.dao.JDBC.<clinit>(JDBC.java:22)
at com.mwq.album.dao.BaseDao.selectSomeNote(BaseDao.java:15)
at com.mwq.album.dao.Dao.selectAlbums(Dao.java:25)
at com.mwq.album.AlbumPanel.loadChildNode(AlbumPanel.java:184)
at com.mwq.album.AlbumPanel.initAlbumTree(AlbumPanel.java:103)
at com.mwq.album.AlbumPanel.<init>(AlbumPanel.java:57)
at com.mwq.album.AlbumFrame.initComponents(AlbumFrame.java:37)
at com.mwq.album.AlbumFrame.<init>(AlbumFrame.java:24)
at com.mwq.album.AlbumFrame$1.run(AlbumFrame.java:75)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
请版主解答，不胜感激！
java.lang.ClassNotFoundException: org.apache.derby.jdbc.EmbeddedDriver //添加了从网上下载的derby
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:169)
at com.mwq.album.dao.JDBC.<clinit>(JDBC.java:22)
at com.mwq.album.dao.BaseDao.selectSomeNote(BaseDao.java:15)
at com.mwq.album.dao.Dao.selectAlbums(Dao.java:25)
at com.mwq.album.AlbumPanel.loadChildNode(AlbumPanel.java:184)
at com.mwq.album.AlbumPanel.initAlbumTree(AlbumPanel.java:103)
at com.mwq.album.AlbumPanel.<init>(AlbumPanel.java:57)
at com.mwq.album.AlbumFrame.initComponents(AlbumFrame.java:37)
at com.mwq.album.AlbumFrame.<init>(AlbumFrame.java:24)
at com.mwq.album.AlbumFrame$1.run(AlbumFrame.java:75)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
请版主解答，不胜感激！
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