在myeclipse里运作netbeans桌面应用程序报错，求解

2012-3-19 10:07:56 org.jdesktop.application.Application$1 run严重: Application class xcpubsocket.XCpubSocketApp failed to launchjava.lang.NullPointerException    at xcpubsocket.XCpubSocketView.<init>(XCpubSocketView.java:50)    at xcpubsocket.XCpubSocketApp.startup(XCpubSocketApp.java:19)    at org.jdesktop.application.Application$1.run(Application.java:171)    at java.awt.event.InvocationEvent.dispatch(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.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)Exception in thread "AWT-EventQueue-0" java.lang.Error: Application class xcpubsocket.XCpubSocketApp failed to launch    at org.jdesktop.application.Application$1.run(Application.java:177)    at java.awt.event.InvocationEvent.dispatch(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.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)Caused by: java.lang.NullPointerException    at xcpubsocket.XCpubSocketView.<init>(XCpubSocketView.java:50)    at xcpubsocket.XCpubSocketApp.startup(XCpubSocketApp.java:19)    at org.jdesktop.application.Application$1.run(Application.java:171)    ... 14 more