If I make a applet from Java program is it possible
that this applet writes something on disk from browser...
I have a application with graphics and I want to make,
she as applet but I don't know how to save data...??

If I have a class, Cat, which extends Animal, why can't I pass a
List<Cat> to a method that takes a List<Animal>? This should work,
since Cat inherits from Animal. Why doesn't inheritance include typed
collections? This seems like a gap in Java's polymorphism.

I'm familiar with Java programming. I've an idea of servlets and JSP,
but I'm completely new to J2EE.
I wonder what is the difference between JSP programs and J2EE. What
exactly is the difference. I hear that J2EE applications can be

I would like to provide my implementation of some api on j2me that is
complient with MIDP 2.0. The functionality of this api is provided as
a library. My problem is about communication of the java and the
library. I see two solutions:

It was brought to my attention that my post about an opportunity was
not appropriate on this board and that it would be best to apologize
for my post.  I am sorry for the disruption.
Michelle Bartie

I'm trying to create a Java program that can send a file from 1
Windows PC to another over a TCP/IP connection. As many people use
[wireless] routers, how can I create a TCP connection to PCs that are
connected to the internet via a router? The router has an IP and then

I am a java programming.
I have studying java programming since 15 jan 2006
and I hope to recive suggestion from you to improve my skills in
programming.

Okay, so we're upgrading to Tomcat 6, and we've encountered a difficulty.
In order to keep URLs consistent (for simpler log parsing and for
cosmetic reasons) the idea is to have a servlet as the controller and a
JSP for the display, but only ever to have the servlet URL visible to ...

I've implemented the Observer pattern in the GUI that I'm writing so
that any property view to a data object will be updated if that
underlying data object is updated.  The problem I am having is
described in this scenario...

I'm having a lot of problems trying to create an web service client.
My server is provided by an Jboss/TomCat?axis server that enables me
various methods. The connection is a normal SSL connection with
authentication(nothing big till this point). The problems start when I

Has anybody tried the Facebook Java library?
I have it in a project in Eclipse using Maven. I get this error when
trying to build the project.
C:\development\projects\workspace-3.2\foo\src\main\java\com\facebook

I know this is not possible, but my question is why did they design it
that way:
public class ParentForm {
    protected String name = "ParentForm";

Can anyone recommend a good, downloadable Java cross-reference tool?  That
is, one where the input is a class and a classpath, and the output is all
the classes the first one references, directly or indirectly.  (References
statically, at least.  A list of calls to Class ...

i'm using a JFrame with enabled double-buffering. the window itself
owns several JInternalFrames. my problem is that when double-buffering
is enabled, the internal frames are invisible, with an exception that
they flicker for few milliseconds when i move the mouse over their

I have an application (xml-editor) that uses up an unreasonable amount of  
java heap space.
I have tried profiling with tptp (eclipse) and jmap/jhat, and they do give  
me memory histograms and instance counts, but what I REALLY want is to see