Here's my scenario:  I have an interface, a class with an inner class
that implements the interface, and a second class that extends the
first class (and the inner class as well, since I've made it
protected.)  The interface, base class, and derived class are all in

Can anybody point me to a tutorial or example showing how to create a
concrete SSL Socket class and the correct sequence to follow to start
and end a connection?
I've found a fairly brief tutorial on the JavaWorld website, written in

I use a selector to manage the unblocking DatagramChannel,
When I got the event that I can read from the channel
(key.isReadable()==true),
I call this method.

We all know that "Socket(String host, int port)"  create a client
socket which connecting to
the target host : port
 however, which local port does it connect from? I guess it must be a

I want to use Java applet on 4/8 cores Processors. Will Browser allow
the applet to access all 4 Cores to an Applet if it has 4-5 Threads in
it? Does a webpage only get one core or it can ask more cores if the
applet is using multiple threads?

My experimentation seems to say yes, but I can't seem to find it
explicitly stated so anywhere.

First- I'm not a programmer so I will do my best to answer any
questions you ask me.
Using Firefox Error console I've listed the errors when I try to
upload an image to a site's application. This sequence works fine in

I have a .properties file with some strings that I need to print in a
PDF (I'm using iText). I need to add line breaks to some of the
strings so that they appear on the report as a 2 or 3 line string. I
tried adding \n and \r to the string at the location I needed the line

Hello to all Java programmers out there.
I am currently trying to create a very simple form which would store
the data entered by the user in a database, but I would like to be
sure that I make use of the best practices in J2EE and that too

I can't understand the mean of "signature dependencies" in java. The
whole sentence is as following:
"Where a class included in this specification has methods, fields or
constructors with signature dependencies on classesnot included in the

I got the following line of code:
if (request.getHeaders("user-agent") != null &&
request.getHeaders("user-agent").nextElement() != null)
Which throws a NullPointerException at .nextElement().

Netbeans has a nice autoformatting tool.  But it in the current
version, it seems to want to put comments where I really don't want
them.  For example, if I have:
else{

So I was wondering how local variables are handled in Java. If the
same method is called upon many objects ( of same type) I guess the
method calls happen one after the another so that for each method call
new local variables get defined , but at any point in time there is

Hi, we just moved over all of our information to a new server. The web
app is served by Resin. After, relaunching the application, I noticed
we have the following error and have no idea where it's coming from:
EL expression '${searchEntry}' is only allowed for attributes with

I'm writing a small program with a lot of buttons. To make it a little
easier to write the code I've tried to create the JButtons from an
array.
I don't work.