Why member interface is always static?

i wrote a JSP code in NETBEAN 5 RC2  version in my webapplication
project.
does NETBEAN shows  design view of the source code ?
it shows the source view though.

Is there some method I can call that can test to see if a method exist or
not?

i am just starting to learn java programing.  i would like any
information that would be relative to someone new to programming.  any
info would be helpful.

Do you guys think that the Java Sun Certification is usefull ?
I mean, is it enough to begin working with Java or not ?
Thanks

as part of a project at uni i have been asked to provide object persistance
through files
I have opted for serialization
my question is quite simple

Could somebody recommend a good Java IDE please?  Since Microsoft
visual studio doesn't support Java, is there any good and widely used
Java IDE that is used by both home users and commercial organizations?
Thanks,

can any one give me a brief description on JOONE(Java Object Oriented
Neural Engine)?
Thanks in Advance....

I don't mean to start any flames or such. I work at a company where I'm the
only Java programmer and the rest are developing in CF. This is for inhouse
intranet applications. Some of the management is trying to switch
development over to Java. I was hired on and part of my job is ...

1)  A java source file can contain How many public classes ?
2)  What is default  layout of  Frame and Applet?
3)  References are always passed by ___ ?
4)  Which class doesn't call its super class constructor?

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I've a problem with new line character. I am in Windows platform but
when I write a file with a BufferedWitter with println I obtain the
character "\n" x0D like separator (Unix Separator). My System property
line.separator is "\r\n".

I want to make my software (A Chatting software designed using Java) a
freely downloadable software on the Internet.
How to do this?
Are there any websites which accepts such softwares?

I was wondering whether there is a performance difference between java
appications packed into jar files and java applications which are
spread as .class files

I am currently implementing a Java application and need to use
multicasting. How do I set up multicasting in Java ? Do I need to
configure something in my router to enable it? Or when I start a multicast
socket, the multicast group is created automaticly ?