I have this line of code:
out.write(s+n);
which writes to a file the variables of whatever is in s and n.
For example

I got a strange error message from the java 1.5.0 compiler:
"type Map does not take parameters" which Map certainly does.
The complete code was this mini class:
import java.util.*;

I am new to Socket Programming. I am trying to send data using UDP but
I get the IllegalArgument Exception but I can't find why I am getting
this exception.
The program below is implemented on server.Which recieves the packet

I'm very confused why this code works with one version of Java and not
the other (I inherited it, so I may not fully understand it, but it
seems straightforward).
Basically, I have a JTabbedPane.  I add three panels to the JTabbedPane

Hey all!
I am not sure if this is the right forum for this question, please
redirect me if this is not.
With that, here is a question ... from a novice really.

I have an image in my java application that I would like to bring the
users attention to...
dropping this - What I was thinking was to put a JPanel behind the
image, just extending beyond the borders, and change the color of it

Do methods that can potentially throw an Exception (but don't) execute
any slower than methods that don't throw Exceptions?
Do code blocks enclosed in try/catch execute slower that those that aren't?
For example, does this execute slower:

My requirement is automating the build process which contains execution
of some shell scripts and file copy btw remote servers. And this is my
first encounter with Maven and ANT. I am getting pear help in ANT,
minimal in Maven 1.0.2 and NONE in MAVEN 2.0.4.

I am using JEditorPane to display html files in my java application. It
seems that after a while, the memory goes up to 90K making it
impossible to browse all the pages. This is dramatic !!!
I searched the internet and found out that this swing component has

This is an ill-defined question, but here goes:
My app uses lots of int arrays. We usually don't know how large the
array will ultimately be when we first start populating it. So we grow
the array as necessary, which involves creating a new, larger array and

I'd like to force the use of the super keyword when accessing a field in
   a parent class. For example, if Parent contains
int foo;
and Child extends Parent, then any reference to foo in Child should be

i am connecting to an instance of oracle database from my UNIX tomcat
server.Now i want to connect to another instance of the database server
from the same UNIX server. so i modified the server.xml file of the
tomcat server accordingly. but still i am not able to connect to the

I am trying to execute a System command located at remote machine.So i
use Rmi concept for this purpose.
The model source code is
try

I want some classification on understanding the context of synchronized
reference:
say
LinkedList queue = new LinkedList();

In my applet I have a method responsible for accessing the MS Access
database which is on my hdd.
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
String filename = "C:\\Documents and