In the brief form of the loop {for( double value : collection )} can
one access the iterator that is created to perform the loop?
I ask as there are times that I would like to reassign the i-th value
in collection to the result of an operation on value.

I have a Java application that makes a large number of outbound
webservice calls over HTTP/TCP.  The hosts contacted are a fixed set
of about 2000 hosts and a web service call is made to each of them
approximately every 5 mintues by a pool of 200 Java threads.  Over

which framework do developer prefer to use for Object <--> XML
mapping?
- jaxb
- castor

I created the following form for the company intranet.  All seems to
work well, with the exception of the submission.  After submitting,
all of the answers come through in the e-mail EXCEPT the calculated
answers which were figured and placed on form elements by my

I see 52 ms being spent in calls to readFully() method of the
RandomAccessFile. I ran strace against my process and figured that
these weren't reads going to disk. All reads were being served from
the buffer cache (verified by running iostat). It also looks like the

I have to use Process proc = Runtime.getRuntime().exec() method to
execute OS level command such as lpr. When I traced Java source code,
Process class's getErrorStream(), getInputStream(), and
getOutputStream() methods are instantiated inside ProcessImpl

I would be very grateful for insights considering modeling a JTree.
Background
=========
I am learning swing and try to build various kinds of trees.

I am pretty sure I have solved this problem before, but would like to
hear comments about it.
I know that if I am going to run a simple class (for a console,
tutorial type of program) with no jar I better make it part of the

we can writeObject to a file. but if i want Serialize a Object to a
String(or byte[]) and i don't like to write the object to a file and
then read it ....

I have installed tomcat5.5.
In the tomcat docs it is recommended that i install Ant build tool as
well as Concurrent Version System (CVS) too.
Can someone tell me, how much neccesary are these to install and use?

Is importing a class directly ie.
import java.io.InputStream
more efficient than
import java.io.*;

am a bit annoyed because enums since JDK1.5 apparently cannot inherit
from other enums. Problem is I have to plaster code like
public enum MyEnum
{

Hello all, I have a question about the String split method.
I have a string s1:
       String s1 = "a \"single unit\" test";
       String[] strArr = s1.split(" ");

Only just spotted this  
(http://cld.blog-city.com/finally_java_se_6_for_macos_x_leopard_or_tiger.htm)  
and it doesn't seem to have been mentioned here yet.
It's available now from the "Software Update" feature.

Does anyone have any information to the contrary?  As I've been
working with the C# language, I am finding it has everything I like
about Java.  I have a big career investment in Java, but it seems like
more and more I see large Java apps being re-written in C#.