What is the difference between instance variable and local variable? Is
that true instance variables are shared among threads while local
variable is not shared?
public class Test

My question is about the Log4j logging system.
I wrote some code using the Spring JDBC framework and I wrote some
JUnit tests for my code. When I run the tests, Spring outputs thousands
of debug statements to Log4j, which end up in my test report, making it

I'm trying to find out if it is possible to inhert EJB relations
defined by xdoclet from a superclass. What I mean is, imagine I have a
class AbstractPersonBean. The class defines an ejb.relation to an
AddressBean since every person has an address. Now I want to create

I wonder if anyone can shed light on what this error message means:
Name clash: The method addAll(Collection<E>) of type
SortedArrayList<E> has the same erasure as addAll(Collection<? extends
E>) of type ArrayList<E> but does not override it

I am trying to load, save, load a properties file from a Swing
component, but I noticed that the Properties methods are a little strange.
For example, Properties.list() ...prints a '-- listing properties -- '
at the top of the output.

I have a question and am not sure if it is even possible but would appreciate any advice. First I
will show my small self contained example of my issue. This isn't my application just a very
simplistic view of what I am trying to achieve.
public class Main {

I've been given a question to do. Using a buffered reader I need to open a
file and then count the number of words, number of characters in words and
the number of odd and even words. I've got no idea of even where to start so
is there anyone who can help me?

Ok, I have been tasked with converting one XML doc to another. The
structures of which are radically different. I mean, to fill in the
fields of XML B I need to mannually pick fields from XML A. XML B is
attribute based, XML A is tag based -- it's ugly folks.

Have anybody experience with JBoss application server?
We are trying to use it without any real success and with many problem.
Maybe better to select another EJB server?
Thanks

We know that, the primary key for an ORM in hibernate is mapped by
element id.
an exampls is
               <id name="id" column="uid" type="long">

When execute an insert, update or delete statement, we can use the
following code:
stmt1.executeUpdate(sql1)
or

I am working on updating the Java syntax highlighting rules in NEdit
(http://www.nedit.org) to handle generics, and I need some code to
really torture it.
Any pointers to one or two source files that really push generics to

I am trying to create a JSP-only WAR file "manually", and have some
questions.
I am first creating a directory structure as follows:
e:\work

I have this problem:
i have bluetooh dongle connected via USB to my pc and my OS is Windows
XP PRO.
The bluetooth dongle provides two virtual serial ports that must be

I have code like this:
ArrayList<ZD>allZips = (ArrayList<ZD>)ois.readObject();
It complains:
Type safety: The cast from Object to ArrayList<ZD> is actually