Hi, i'm trying to solve a security permission issue when running a
spring application in tomcat (v5.5.4) with the security manager turned
on. I'm not sure if the root cause is log4j or spring, and i'm also
confused why either would need such a permission.

why there is a query I can execute In mysql client ,but can not execute
in jdbc?
String sqlstring ="select host,port,username,password,LastCrawlState
from Host

I'm an ongoing student in Business Information Systems.
Anyway, right now I'm trying to understand a design technique called
the observer pattern.
Java provides for the observable object the class

hello again, havin a bitchin time with this popup menu I'm trying to
create.  I'm a learn by doing type of person and I havent found any
good examples of how to implement a pop-up menu.  The main class in the
application extends a JPanel.  I searched google and found the

I have a list (ArrayList but can be anything that helps the cause) of
objects. I'd love to find a way of extracting all elements that match a
given criteria into another list. I know how to do this manually, but I
was hoping it already existed, maybe in a library with other cool

I am a little bit confused with how OOP works with respect to instantiating.
For example take the following code below. When each of the 10 c1 objects
are instantiated from the CountTest() class, do they not each have their own
instanceCount class variable??? It does not seem to ...

Hi, I wonder if it's possible to package a .class file so that I can
import it from outside default package. It seems to me that you cannot
import classes in default package if you are not working in default
package.

What is a data structure out there, that you can select by wilecard,
and also have fast retrievals?
like, if i have 4 keys, JOHN, JONATHAN, JOAN, TOM., and I want to do a
getKey by, "JO*", and that would return the values for the one that

Hello again! Yes, I have yet another problem for all of you great
programmers in here.
This should actually be a pretty easy task to complete, but somehow the
blood in my veins doesn't seem to flow the right way just now. Here's

I have a JTable which uses a custom cell editor for comboboxes.  The
table starts out with one row and the user can add more rows by
clicking a button.  What is wrong is when the user selects a combobox
item in the first row, and then adds a second row, going to the

Im trying to make something that compares 2 files.  One of the files is
on the users computer....
The other is on a website!
Obviously what Im trying to do is compare the lastModified date, in

I am trying to set up Tomcat 5.0.28 to run under an Apache Web Server
2.0.59. I have the correct mod_jk.so and have everything set up just fine on
a Windows XP SP2 box.
My CATALINA_HOME directory is C:\Tomcat

I don't know what this is called, but I know if I have a method like this:
       public void setValues(String[] newValues) {
               //Do a bunch of stuff
               return;

Does anyone know of a java compiler which can be launched in process to
compile an in memory representation of a java source file?  Essentially,
I generate some source on the fly and I'd like to avoid having to write
it to disk and all the messiness (permissions, cleanup, etc) ...