I need to start my app with
 java -Xmx500m -jar myapp.jar
I'd like to ask for the heap-size at the beginning of my app (eventually
catching an Exception) so that users can start the app with :

I'm running a web app via tomcat, that the original coder has managed to
build using 1.4, but added a bundle of extra jar files to enable JDBC
with rowset.
I've copied all the extra files into a folder under the classpath, which

I have Win2K with NT and am using j2sdk1.4.2_08
With the current IDE that I am using the console at the bottom displays
the instructions and then to enter the data, I have to seemingly have
to use the data Standard Input(System.in)

Are unsigned bytes difficult to use in Java? Or am I doing
something incredibly stupid?
My approach so far has been:  promote everything to an
int either implicitly or explicitly, operate, cast the

Does anyone have any study material to recommend for this certification
exam: Sun Certified Programmer for the Java 2 Platform, Standard
Edition 5.0 (CX-310-055)
I realize that there are actually very few study materials that covers

I am getting Jar Lockup.
I run jar from an XP command line like so:
c:\> jar t C:\Program Files\Java\jdk1.5.0_04\lib\dt.jar
Jar locks up, and when i hit ctl-Break, here is what it dumps to the

  I am able to get records from the database, mySQL and print it on
the screen using out.print(). But for the first output I am also
getting [] along with the output. I have tried using trim() but it
doesn't help. I have removed all the HTML related tags from the jsp

I know similar questions have been asked before, but I haven't found
the answers all that useful. Can anyone suggest some good resources
(online tutorials or books) for programming image effects in a java
applet? I'd like to code a range of weather effects and some general

I wrote a program which needs to switch very fastly the contents of
array data . I used to this as follows :
for(int y=0; y<clone.height-1; y++){
   for(int x=0; x<clone.width/2-1; x++){

I'm searching a way to make a Applet running in full fullscreen on
MacosX. Including no menubar in top.
any idea ?

Is there a way in Java to retrieve the mac address of a local computer?

Object obj = Class.forName("java.lang.Integer").newInstance(); throws
a java.lang.InstantiationException. why? what does it mean? How can I
build an Integer with a default value when all I have is a string:
"java.lang.Integer". It is from an xml file that contains type of an

JPRINTOUT 2.0.0 HAS BEEN RELEASED - pure java professional reporting
solution for embedding in your application.
With set of flash demos it takes just a few minutes to catch up main
stream of using software, learn principal features, and get intuitive

I have list that contains other lists
like :
List1(
{"Vincent","DUBLIN",12}

hi, i was wondering if there is a uml tool that will convert my existing
java code into a uml diagramm?
thanks
Jo