máy đả cài net frame + java rồi nhưng em mở nó lên cái rồi mất tiêu luôn không báo lổi gì cả trong thư muc tiny xuất hiên cái log umbrella , anh nào biết bị gì xin giúp em 1 tay ạ .thank all nội dung log : Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: com/sun/jna/Platform at com.semaphore.os.UIHandlerManager.getSystemUIHandler(UIHandlerManager.java:22) at com.semaphore.TinyUmbrella.<clinit>(TinyUmbrella.java:131) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Unknown Source) at com.semaphore.TinyLoader.loadTiny(TinyLoader.java:248) at com.semaphore.TinyLoader.access$000(TinyLoader.java:29) at com.semaphore.TinyLoader$1.run(TinyLoader.java:42) at java.awt.event.InvocationEvent.dispatch(Unknown Source) at java.awt.EventQueue.dispatchEventImpl(Unknown Source) at java.awt.EventQueue.access$200(Unknown Source) at java.awt.EventQueue$3.run(Unknown Source) at java.awt.EventQueue$3.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$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.ClassNotFoundException: com.sun.jna.Platform at java.net.URLClassLoader$1.run(Unknown Source) at java.net.URLClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) ... 21 more
