protocol exception

hai gurus,

I am in trouble in Applet-Servlet communication. What the code I have written in jdk without any JFC is working perfectly and even if I use JFC for applet UI in jdk1.1.x is working...

When I update my same code for javax.swing.* instead of com.sun.java.swing.*(into jdk1.2, and proper plugin also installed) I get the protocol exception while connecting. It is not accepting any Streams to send the data to servlet where servlet saves the information in file at server side. What to do...

Please help me.
Thanks in advance