您好，我在使用《Java项目开发案例全程实录》碰到了问题，就是在运行第二个项目“企业内部通信系统”的时候出现如下错误，一直没法解决，希望能得到你们的帮助，解决步骤尽量详细点。
 
 
2011-6-14 22:20:44 java.util.prefs.WindowsPreferences openKey
警告: Could not open windows registry node Software\JavaSoft\Prefs at root 0x80000002. Windows RegOpenKey(...) returned error code 5.
Exception in thread "AWT-EventQueue-0" java.lang.SecurityException: Could not open windows registry node Software\JavaSoft\Prefs at root 0x80000002: Access denied
 at java.util.prefs.WindowsPreferences.openKey(Unknown Source)
 at java.util.prefs.WindowsPreferences.openKey(Unknown Source)
 at java.util.prefs.WindowsPreferences.openKey(Unknown Source)
 at java.util.prefs.WindowsPreferences.putSpi(Unknown Source)
 at java.util.prefs.AbstractPreferences.put(Unknown Source)
 at com.lzw.EQ$SysSetPanelOKListener.actionPerformed(EQ.java:484)
 at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
 at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
 at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
 at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
 at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
 at java.awt.Component.processMouseEvent(Unknown Source)
 at javax.swing.JComponent.processMouseEvent(Unknown Source)
 at java.awt.Component.processEvent(Unknown Source)
 at java.awt.Container.processEvent(Unknown Source)
 at java.awt.Component.dispatchEventImpl(Unknown Source)
 at java.awt.Container.dispatchEventImpl(Unknown Source)
 at java.awt.Component.dispatchEvent(Unknown Source)
 at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
 at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
 at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
 at java.awt.Container.dispatchEventImpl(Unknown Source)
 at java.awt.Window.dispatchEventImpl(Unknown Source)
 at java.awt.Component.dispatchEvent(Unknown Source)
 at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
 at java.awt.EventQueue.access$000(Unknown Source)
 at java.awt.EventQueue$1.run(Unknown Source)
 at java.awt.EventQueue$1.run(Unknown Source)
 at java.security.AccessController.doPrivileged(Native Method)
 at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
 at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
 at java.awt.EventQueue$2.run(Unknown Source)
 at java.awt.EventQueue$2.run(Unknown Source)
 at java.security.AccessController.doPrivileged(Native Method)
 at java.security.AccessControlContext$1.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)