i have a class called NonRepeatedDefaultMatrix
NonRepeatedDefaultMatrix has an inner class KeySet<E>
KeySet<E> inherits from HashSet<E>
KeySet<E> has an inner class KeySetIterator<E>

Hi, I'm pretty new to Swing, and I'm at the hello world example code from
java.sun.com. I'm trying to add next to the JLabel a JButton, and next to
frame.getContentPane().add(label); I do the same for the JButton created,
but in the GUI only shows the button. Can you explain to me ...

In the java programs I have written so far, when using swing to create a
GUI, I always get a command window (Microsoft OS) that must be closed
manually. Is there a way to create a GUI where no command window pops up?
Thanks,

I'm not sure what it is called but in Java you can define a class inside
another class.
I have a GUI (extends javax.swing.JFrame) which, among other things,
allows some file selections based on a file extension, to achieve this it

i have some doubts.... please clear them.
1.how can we handle exception inside constructors and finalize method?
2.what will happen when an exception occur inside constructors and
finalize()?

I borrowed the book "Java - How to Program, 3e, Deitel & Deitel"
from my local library. But it didn't come with a CD. This book
is a tutorial for Java 2, using Java 2 SDK v1.2.1 with either
NetBeans dev. x2 2.1 or JBuilder 3 University Ed.

I have managed to connect fine to a db on my website server, thus:
   String url =
"jdbc:mysql://localhost:3306/francesdelrio_com?user=frances&password=XXXXXX";
  Statement stmt;

I tried to play video from the jar file on the next ways:
1.
java.net.URL url = MyClass.getClass().getResource("movie/x.avi");
player = Manager.createPlayer(url);

Hi,
i try to make an error page with jsp on a tomcat 5.
Everything is ok, but i only want to show the name of the URL the user has
typed and isn't found.

Here are my error messages from javac -
C:\j2sdk1.4.2_02\bin>javac xx.java
xx.java:125: <identifier> expected
     Vector<Object> king =new Vector<Object>();

Tahnk you....

I'm making a program which uses JSP (custom tags) to get information from a
form at the page and save it as an .xml document. I use Apache Tomcat to run
my program. Problem is, the .xml files are automatically saved  where Java
is run from, in my case C:/Windows/System32. That's not ...

I've recently begun to look at Array Lists, I know some of the basic
methods that you can do such as clear(), remove() and add().
However now I would like to be able to Save an Array List to a .txt file,
and then open it from the .txt file.

I really don't understand what I'm doing wrong here..
I'm on chapter 8 of the Java Servlet & JSP Cookbook..
I dl'd the package he says (com.jar) and put it in <webappRoot>/lib..
servlet is here..

I'm trying to figure out the proper syntax for sslext with a url
parameter:
In a jsp page,
<sslext:link page='/showTable.do;table_name=<%=objectName%>'>