I'm looking for a light-weight, free way for converting (and hopefully
resizing) image files that are in PDF, TIF, or JPG format into GIF
format.  This has to be compatible with J2ME (not sure exactly which
version, but it is analogous to Java 1.3).

I want to launch an applet using appletviewer. Everything is fine,
except that I don't know how to set the size.Is there any command line
option to do that? I don't want to set a default size for all the
applets, but juust for one applet specifically.

I'm fairly new to using the ant build environment, so I'm sure I'm
asking a silly question but here goes anyway.
I have a directory of wsdl files called /tmp/wsdl
I'm trying to use the axis wsdl2java target to compile each of the

I amnot there in my program, but it will come soon. My game runtime has to
support extensions objects. In the C++ runtime under Windows, these
extension objects are DLL that we load at the beginning of the game.
How can I do that in Java? Is there some kind of extension system ...

I am working on this exercise and would be thankful if you folks
comment on it.
The requirement was as follows:
Create a MovieRating class that contains a private map with rating as

Is there something simpler than this?
StringBuilder sb = new StringBuilder();
int s;
for (int i=0; i<s; i++){ sb.append(' '); }

How do I add a popup menu to JMenuItem? Has anyone a link or
experience with something of the sort? I tried adding a mouse listener
to the JMenuItem, but the JMenuItem kept performing its action even
when I have reacted to the right click and consumed the mouse event.

I'm trying to write a single line to a file (say, myfile.txt) every second
using either javax.swing.Timer or java.util.Timer, but I'm struggling with
this.  Instead of posting my code, I was hoping someone might have a simple
example that writes to a file using a Java timer.

The notify method will wake up one thread waiting to reacquire the
monitor for the object.  How could I know which thread is waken up by
this notify method called by another thread?
I looked at java.lang.management.* and JVMTI, but I could not find a

how do i disable the maximise button in my swing frame. i tried asking
toolkit and i think toolkit is saying not supported for such field
constants. who knows how?

I have written a code that goes through an infinite loop in the main
function and calls an other  function and goes to sleep. In this
function I am awaiting for an input from the user, my program doesn't
wait for the users input when the sleep timer expires calling that

Which is the best free UML tool ?
Is this UML tool free ?
Is this UML tool UML2  compliant ?
May I genere Java code from UML with this UML tool ?

I'm working a program assignment for school. I thought my code was
good but it won't run. It compiles successfully but gives me this
error during runtime:
Exception in thread "main" java.lang.NoSuchMethodError

I have a double array that I store in the session variable: finalList[]
[]
String[][] finalList = new String[8][25];
... do some work to pull information into double array ...

I have a login window with a username and password fields.  The
program checks the username and password from a mysql DB table.  If I
enter a username that is not in the database, how do I get it to
display a message that the username does not exist.