Ecco, ti riporto tutto:
codice:
02/09/09 12:44:18 [0x0-0x1a01a].com.apple.Safari[224] Exception in thread "Thread-103" java.lang.NoClassDefFoundError 
02/09/09 12:44:18 [0x0-0x1a01a].com.apple.Safari[224]  at net.tinyos.comm.NativeSerial.getTOSCommMap(NativeSerial.java:207) 
02/09/09 12:44:18 [0x0-0x1a01a].com.apple.Safari[224] Server in attesa di richieste... 
02/09/09 12:44:18 [0x0-0x1a01a].com.apple.Safari[224]  at net.tinyos.comm.TOSSerial.<init>(TOSSerial.java:282) 
02/09/09 12:44:18 [0x0-0x1a01a].com.apple.Safari[224]  at net.tinyos.packet.SerialByteSource.openStreams(SerialByteSource.java:56) 
02/09/09 12:44:18 [0x0-0x1a01a].com.apple.Safari[224]  at net.tinyos.packet.StreamByteSource.open(StreamByteSource.java:51) 
02/09/09 12:44:18 [0x0-0x1a01a].com.apple.Safari[224]  at net.tinyos.packet.Packetizer.openSource(Packetizer.java:139) 
02/09/09 12:44:18 [0x0-0x1a01a].com.apple.Safari[224]  at net.tinyos.packet.AbstractSource.open(AbstractSource.java:69) 
02/09/09 12:44:18 [0x0-0x1a01a].com.apple.Safari[224]  at net.tinyos.packet.Packetizer.open(Packetizer.java:132) 
02/09/09 12:44:18 [0x0-0x1a01a].com.apple.Safari[224]  at clienteSF$Ascoltatore.run(clienteSF.java:130) 
02/09/09 12:44:18 [0x0-0x1a01a].com.apple.Safari[224]  at java.lang.Thread.run(Thread.java:613) 
02/09/09 12:44:18 [0x0-0x1a01a].com.apple.Safari[224] Exception in thread "Thread-104" java.lang.NullPointerException 
02/09/09 12:44:18 [0x0-0x1a01a].com.apple.Safari[224]  at clienteSF$Server.run(clienteSF.java:217) 
02/09/09 12:44:18 [0x0-0x1a01a].com.apple.Safari[224]  at clienteSF$Server.run(clienteSF.java:217)
Questo mi accade quando provo ad eseguire un'applet dalla pagina html.
Anche se ho incluso le librerie necessarie, non mi trova queste classi.
Quindi ho pensato che una soluzione poteva essere modificere il classpath, ma non so come.