I have used jdom in my codes
so I must add the jdom library into my jar file to make it run
but I can't find any step to add jdom library in eclipse:File-Export-
Java-JAR file

I'm a beginner of Java.I have used abstract classes and interfaces.I
am not able to understand the exact usage of abstract classes.Where
the abstact classes are used in real-time environment?And what is the
difference between interfaces and abstact classes?

String connectionDriver = "org.gjt.mm.mysql.Driver";
        try {
            Class.forName(connectionDriver); // there exc
            // Enable logging

I have a jTree control created via the netbeans graphical gui. It's
displaying the default 'colours', 'sports', and 'food'. The tree is
in
a jPanel which is initially invisible. After creating the tree I make

When it "meet" then <applet> tag in html code, could you tell me how a
browser do to "find" all the classes needed by the applet itself.
In my case, I run Firefox 2.0.0.4 under XP, with Java 5.
I have no CLASSPATH defined at all, no JAVA_HOME, nothing...

I have some code that is importing data into another system with
various asian characters.  If I hard code in the program for a
variable say "\u4f55\u304c\u3042\u308b\u304b\u3002" and compile it,
the characters show on the screen of the destination application as

I'm developping an application wich import a lot of data into my
database.
Todo this, there is a file which data and format like that
data1|data2|data3 etc.

The C language alows to use the static keyword :
(.. )'static' can also be defined within a function. If this is done, the
variable is initalised at compilation time and retains its value between
calls.

I am trying to populate a s:select drop down using a list.  I am new
to all of this so I am having some trouble.
There is a example for populating a select using a list on this page:
http://struts.apache.org/2.0.8/docs/select.html

I want to create word dictionary by hash algorithm. But I don't know
what is the best hash function for this and then how to implement hash
table in java.
please help me

Gday
Can someone with a bit of expirence in Java help, i have a class that
call displays my screen in a thread that dies after 8 sec, but my
image does not appear. here is the code. Is the something i am

Hi, Is it possible to extend java.io.File?
javac (through Netbeans) gives me an error:
cannot find symbol:
symbol : constructor File()

Hey people
I was wondering, is it possible to capture the image of a window which
is minimised, similar to windows printscreen.
I know it is possible to maximize a window, take printscreen and then

Hello, I am a C / ASM / C# / bash programmer and I have recently
decided to add Java to my list of languages.
However the only tutorials I have found either assume a complete lack
of prior programing knowledge and advance at a snails pace, or are

I am working on a plugin sub-system for an application I develop on my own.
Each plugin must be a class implementing a specific interface (say
MyInterface). They must be available, either within the application package
or through third party jars.