HI,
I'm kinda new to java.  I have a .jar file that was saved locally to my
machine and i'm trying to call it.  The applet loads, inits, and starts
the code fine.  I see it refreshes the screen every so often.  The

I'm writing an ArrayList and I have become stuck at the IndexOf, so far I
have this...
    public int indexOf(Object o){
    if (isEmpty()){

can somebody tell me a simple way to convert a signed byte array with length
4 to a signed int and vice versa?
Regards -  Manuel

I was just wondering why sort in Collections doesn't support sorting of a  
set?
How can I go on dealing with that?
Thanks in advance.

Can anybody advise on good Java books covering I/O and
NIO?
Say, as good as Java in a Nutshell/Java Examples in a Nutshell
by David Flanagan.

I am having trouble working with the fact that the setParent() method
of PropertyResourceBundle is protected. I wrote a subclass of
PropertyResourceBundle so that I can explicitly set it's parent (with
setParent()) but if I try to do a

I have made a class that displays a progressbar in an frame.  I can call
this progressbar from an another class, and display this and change the
value. (that works)
But now my problem is the following: I would like to have that the

Say I've got a TabbedPane gui with two tabs.  Is it possible to hide
the second tab until/unless a certain radio button is clicked on the
first tab?  I'm building a small program that allows users to order
books, and they have a choice as to whether or not they want to have

Hi all of ??? you,
   Maybe I am in the wrong group? No JRE version have been found in the
launching file.
Jean

I have an assignment where I need to determine the gross wages for 5
employees using 4 arrays, empId ( ID numbers are given), hours array,
payRate array, and a wages array to store the info for the final print which
will include all 5 employees.  We are using JOptionPane as the ...

I get a string from an Oracle database that is configured to use UTF-8
character set, for some reason when I write out the string to an XML
document the characters are in double byte format (UTF-16?)
The result is an XML document that is part UTF-8 and part dunno what

Hallo, these tags:
   <c:url var="url2" value="http://someurl">
     <c:param name="usr" value="lp"/>
     <c:param name="passwd" value="secret"/>

It is a serlvet program. When I ran it, it gives
java.lang.NullPointerException
    at Welcome.doGet(Welcome.java:19)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:126)

I created a mini-essay on Java 1.5's new  enums at
http://mindprod.com/jgloss/enum.html
I have modified the Conversion Amanuensis to give you Java 1.4 or
earlier or Java 1.5+ autoboxing conversions. Now many conversions can

how do I create an "age" field for each Lifeform object? as the
seconds tick by, the age should increase. when age >= MAX_AGE, then
the LifeForm dies.
is there some generic method that returns how "old" an object is?