*First of all i need the JAR file, how do i create the JAR file?
*And then there is the java.lang.NullPointerException
How can i get round this, any help id be most grateful for any input.
First, you need to run the preverify utility on your classes. Then you can use the jar utility to make the jar file. The jar file contains a manifest, which is a text file describing the contents. Finally, you need the jad, which I'm guessing you already have. The jad file also contains a description of the application, some of which duplicates information in the manifest. The whole lot is described in the WTK documentation.
Sorry - I know that's a bit brief!! I've written a batch file that automates the basic process for building a simple MIDlet from one source code file, which should give you a reasonable example of the process. You can find it in the post http://discussion.forum.nokia.com/fo...1163#post61163
I suspect that the null pointer results from not having a jar (and therefore no midlet). Worry about it only if it still happens when you do have a jar!