I'm using Jakarta commons-validator v1.1.4 in my app.  I'm running into
a problem when I declare a field with more than one depends argument:
<field property="admin_month_1" depends="required, range">
What is happening is the range validation result overwrites the

Can we change the encoding in which the fileinputstream or
fileoutputstream reads or writes to a file. I need to manipulate the
text of a file, which is in unicode, in utf8 encoding, this thing works
fine on linux platform but when I try to run this on windows platform I

Can we change the encoding in which the fileinputstream or
fileoutputstream reads or writes to a file. I need to manipulate the
text of a file, which is in unicode, in utf8 encoding, this thing works
fine on linux platform but when I try to run this on windows platform I

Anyone knows the differences between synchronized block and synchronized method?
Thanks!

    The task before me is to write a compiler for a fairly simple
programming language.  I want to write a program that can be executed
wherever the source files are for this programming language.  I would
like to write this program in Java because I'm used to Java and like

I've come across this problem several times: What tools can I use to
extract all class files that are in the call graph of my main method,
or of a given set of files?
Example 1:

I need a function to terminate a thread immediately, but stop() is
deprecated. I have read through the short article why stop() and others
are deprecated, but the solutions offered in this article to simulate
these functions are simply not usable in many situations (and the

I am confused about a statement in the API docs for java.math.BigDecimal
in J2SE 1.4.2. They state:
 public static BigDecimal valueOf(long unscaledVal, int scale)
 Translates a long unscaled value and an int scale into a BigDecimal.

I am developing an ASP.NET web application (in C#).  There is a
separate server-side application running, which checks various things
and will decide if the user's screen will need to refresh.  Is this
possible through a java applet?  I have investigated polling, remote

I have created 2 forms and they are in the same
folder(c:\xxx\xxx\ListSaver2). I put
package ListSaver2;
at the top of each .java file

    I'm writing a program in which I want to create a certificate for
the user on-the-fly. This is easy enough, possibly running the keytool
through a Runtime.exec() command, but I want to have the newly created
certificate signed by a parent certificate, and the keytool wont do

I have a method
public void setGap(Gap gap) {
    ...
    doLayout();

Wondering if anyone has any pointers on how to have Eclipse compiling
Java enum(s) without the 'enum cannot be resolved (or it is not a valid
type)' message. I understand that I need to use some sort of compiler
directive to instruct it to use 1.5, but where is that file that I need

What is the differences between abstract class and interface? When to
use abstract class? When to use interface?
Thanks a lot!

What's the best way to implement undo/redo in a swing application?
(Undo of changes to some/all swing components in a frame?)
Thanks