I am getting the following exception in my code:
javax.mail.SendFailedException: 5.5.2 No valid recipients
       at gnu.mail.providers.smtp.SMTPTransport.sendMessage(Unknown
Source)

Dear friends.
I have an Applet in a java file. But the applet uses two other classes
inside the same .java file
When I compile that file, I get many .class files.

I have recently done some thread programming in java, my previous
experience is from posix threads in C. There is one thing that puzzles
me about thread programming in java.
In C there are no function instances (as in objects or similar things),

I have just built an application (J2SE) which creates many threads for
I/O socket operations. Under very specific circumstances (very slow
network connection, many I/O operations) I got an error:
Exception in thread "main" java.lang.OutOfMemoryError: unable to create

I have a vector in java having values from -1.5 to 1.5. How can I plot
a Histogram?
Thanks
Amit

what is the return value of 'findClass' exactly? Is
it a pointer to the memory which contains executable
code of the class? Can I feed this pointer myself with
a byte stream that contains a class file (*.class)? My

I have to solve a quadratically constrained optimization problem. Is
there a library in Java to do this directly?
Thanks
Amit

 i want to place checkboxes beside the records that i retreive from
the database so that when i select the checkbox i should be able to
edit or delete the records..(similar to the gmail inbox,where the
checkboxes are populated when a new mails are received).cud some one

I'm trying to figure out what's causing the load (of 3, 4, 5, and
higher) on my server (Jetty, webapp, JDK 1.5_09) and wondering what the
best way to do it is on a production server.  In other words, which
tool imposes the least overhead for this type of thing?

Hello, i'm writing java program using Threads, but i don't quite
understeand some...
My program has 4 threads, each one prints on System.out one letter: A,
B, C or D. There are some rules they must obey.

I'll never forget what it's like to be part of the majority of punters
trying to profit from Betfair, but not knowing what needs to be done.
Backing, laying, trading, but never getting anywhere. Those are some
sad memories.

I have created a java class which I want to use from another java program.
Do I need to store the java file in a particular location?  (bit like C/C++
include files?).
I tried just pasting class to bottom of file with main java program I was

I have Problem with jsp in farsi;
when I type farsi in my developer (JBuilderX), IE peresent it in farsi
but when I fetching Data from access in farsi and put them in String
Object and put the String Object in <%= %>notation it isnt work and

I have a Java class (an applet) which spins off a separate thread to handle
socket networking communication code.   I pass the this ref to the new spun
off thread so the thread class can communicate with the applet GUI.
However, if I for example, click on a button in the applet, I ...

How can I write a swap routine with only call-by-sharing parameters?
Thank you in advance