Hi, folks,
Just had one of those embarrassing moments.
I was trying to explain why I think that one Java package structure is
better than another, and someone said, "So, what do Sun recommend?"

Is there a way (pattern, ...) to enforce the Class B (example bellow) to
implement some factory method. Something that would have the same effect as
the flawed example bellow.
All classes that implement A should have to know how to instantiate some

I am looking for a class to replace my current Hashtable
Currently Declared like so
Hashtable<Double, MyClass> m_cached;
I want to be able to do things like

I'm trying to use the trim() function on a simple String but the trim
doesn't remouve the leading space. I looked at the string in MS Word
and found out that two different carracters are used to mark spaces (a
dot ˙or a circle °). Trim() gets rid of all the dot spaces but not the

Java supports Unicode. How can I use Unicode characters (like
Devnagari, Arabian)  onto my applets and standalone applications?

hi, I'm having a problem with Javamail.. I can send email only to one
recipient.. if I try to send to more than one recipient I get an error..
message.setRecipient(Message.RecipientType.TO, to);
message.addRecipient(Message.RecipientType.TO, toW);

I have a small problem of outputting data to the printstream.
When it compiles, it has the following error
'void' type not allowed here
  pout.println(arr.display());

I know that Java support IPv6... but how?
I see two tipe of stack:
-dual stack
-separated stack

I love Eclipse, but I also love keeping my old methods of coding
locked up in a document of .bacs. Any way to do this with Eclipse?

I have to sort the content of a file in sequence number order.
The sequence no is not in order.
The file is in the following format
Sequence no   time

im basically a newbie to java
java doesnt support multiple inheritance
ie you can atmost extend only from one class
and implement other interfaces to simulate mulitple inheritance

I wrote this applet but when I resize it (to invoke paint method) it
works different every time.
Do you know exactly what's the cause of it?
import java.awt.*;

// Create JradioButton and add to jrpnlRadBtn
               String temp[] = {"Compilers","Operating
Systems","Computer Networks"};
               JRadioButton jrbtnSub[];

What is the effect if I add  EventListeners (like ActionListener)
twice to an Object (like JButton or Button)
?

I've started some Java development on Windows and I have a question I
was hoping someone could tackle. It's a bit complicated, so please bear
with my explanation:
I am using the 1.5 JDK, which I installed in C:\program files\java. Also