I am a bit confused as how wait() actually works. I know the purpose
of this method but what I wanted to know is when a few threads waiting
on a certain object lock and they are signaled via notifyAll(), how
does one of the threads on the waiting list for that object lock gets

When I coded the java mail code and try to execute it throws the
following error,can anyone
help me out in resolving the same so that it can successfully
executes:

Firstly, is there a program I can write to go through many subfolders
and change the extension of all the files?  Or if I do that myself,
Is there a way to somehow write a program to seek the XML files, if
they're all in groups separated by folders?  So, have the program get

Hai friends i have j2sdk1.4&j2ee 1.4 i installed sucesfully and also
tomcat 5.0. It is working ,i dont know how to run jsp/html through
tomcat server.
so   please give me guidelines to run programs  completely....

hullo i would like to know more about the java

I have to deal with several lookup tables like for example:
Quality    SpecificWeight    Hardness    TearStrength
So I would create a Quality Class to store the values for a single
record.

I have a complicated request to fulfill and I don't want to re-invent
to wheel for it.
I have a database with customer information ( name, city, bill,
etc...) stored in many tables

I need material for JAVA ..
please  send me...

Subject says it all... how do I create a JarFile/ZipFile instance from
a byte array without outputting the byte[] to a temporary file and
reading it back via the JarFile/ZipFile constructors??
Currently I do it via temp file (which sucks):

Dear colleagues,
I am looking for a free and simple mechanism for reading data from
files (could be CSV or XLS ) and inserting values that are read into a
database.  I know that I could import a csv/xls file directly from a

My question is evident from the code below. Thank you!
class A implements Describable { // needs String desc()
 public String desc() { return "I'm class A"; }
 class B implements Describable {

Strange question, if somebody have an answer, will be really helpfull.
I used a regexp (octal) :  < \0 > to find < (char)0 > char in a
string.
1) If i get the regexp \0 from a text file, the regexp NOT match.

I have Eclipse 3.2.2 and jre 1.6 installed.
I have tried to insert new class, that use JOptionPane,
but I have written :
package javax.swing.JOptionPane and it's an unknows class in Java.

I am using velocity templates to generate emails in a stand alone
application.
During the life cycle of the application, i generate 5 emails. But i
am facing a problem now:

I've been checking and i'm still not sure of this but can i create a
java applet with an swf movie included? If so can someone give me some
pointers on how to perform this? Thanks in advance for any help!