Some java probles

Hi,
I wrote a java application with JBuider2 v2.00 that under JBuilder environment works well , but if I try to run it from the DOS command line with java ...,
this message is displied:
Exception in thread "main" java.lang.VerifyError: (class: bil01, method: main signature: ([Ljava/lang/String;)V) Incompatible argument to function
I think the CLASSPATH is right because I can compile correctly with javac in DOS.
An Other application print a report (only one page) using PrintJob pj = getToolkit().getPrintJob(... and printAll(g);
all works well until the application is active,but after it is closed it's impossibile to use again the printer because the a message tell that the printer in in use by an other job.
How can I release the printer? I tried using the method .end and .finalize, without results.
I'm not able to use the "commapi" donwloded from Sun working with JBuilder2.
I'm copied the comm.jar and the javax.comm.properties files in the directory \jbuilder2\java\lib and the win32com.dll into \jbuilder2\java\bin
how specified in the documentation supplied by Sun.
whit the JBuilder2 tools menu I modified the Default project properties adding a new library with the comm.jar file.
This api works well when I use them whit javac or java from DOS Commad line, but JBuilder cannot import javax.comm.* .
Someone can help me?
thanks
Danilo

Your problems seems to be of the CLASSPATH/IDE environment nature and as such belong on "New To Java Technology" or "Java Programming" forums, certainly not on this one.
Also, because the forum engine does not manage discussion threads it would be much easier for you to get help if you split your post into several independent posts for each question.
Last, but not least:
http://forum.java.sun.com/thread.jsp?forum=31&thread=362421
http://forum.java.sun.com/thread.jsp?forum=54&thread=190747

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