which is the recommended way?
1)
private Action createExitAction() {
    return new ExitAction();

Which is the preferred way to write XML files?
I have old code where there is a writeXML(Writer w) method in my class
hierarchy that loops from the top down through each class. Each class has
this method.

what are the preferred means of dealing with slightly complex config
files these days.  by slight complex, i mean the config file may not be
a simple name/value pair format.
what about config file for applets? i imagine these must be read and

    Does anyone out there know if these methods do blocking I/O?
Thanks,
Jason Mazzotta

I want to establish a video conference system by Java. Is there
previous efforts on the similar tasks? What kind of packages or
libraries should I use?
My goal is to establish a enterprise-wide client/server architecture

CAN someone help me with this problem of always getting the NPE whenever I
try to view only this particular servlet image in my browser. Here [AGAIN] I
submit the code for this servlet, if someone didn't see it the other day
when I initially posted this :

    If I put an attribute into "application" scope with the
ServletContext.setAttribute() method, and multiple objects call
ServletContext.getAttribute(), what happens?  Does getAttribute return
multiple references, copies of the same object, or does it simply conk

This gives the expected result "AB" if the class is declared as B b or cast
to B, but when it is declared "A b" it returns "AA". Should it?
public class A {}
public class B extends A {}

How to do? Thx!
Regards,
Sam Hwang

I'm a little ashamed to ask this, but...
I used to do some Java programming, but
it seems I forgot everything.
I'm experimenting with a very simple program:

I can see how to get a list of nodes based on the name of the tag using the
method Document.getElementsByTagName.  But is there anyway to get a list
based on an arbitrary XPath expression?  For instance, if I wanted a list of
Nodes where an attribute was a particular value, how ...

Lets say i have this scenerio
class A {
 public B objB;  //B is my own class
 main() {

setting setBackground(Color.white) on a combobox succeeds. however,
there is bluish color along the edges.  setForeground doesn't help.
any suggestions?  thanks in advance

I write a simple client-server programm with RMI package.
This program not work with a firewall between client and server.
The firewall port: 1099 and 14000 to 15000 is open.
The java.policy file is:

The class Naming (from package java.rmi) provides the methods bind,
list, lookup etc. Those methods are defined in the interface Registry
(from package java.rmi). But according to the SDK API docs Naming does
not implement that interface. Is that true or a misprint? If it is