I wrote yesterday my first applet
MyApplet extends javax.swing.JApplet
...
etc

Is it possible to call a Jar file complied with Java 1.5 from a 1.4 JVM
?
I have done a wee bit of testing and I get :
"class file has wrong version 49.0, should be 48.0"

Hello Java gurus :)
I am new to java programming. I have a problem
with Arraylist object. I wrote the program below;
import java.util.ArrayList;

I need  installer software and update software for my java client
application.
So I can use InstallAnywhere or install4j to make the installer.
But what do people advise for automatic updates over the web.?

Is it possible to create a marker interface by a user ? If possible,
how? If it is not possible, Why?

For information only - no question here..
I hit this error and went searching the groups for answers.
Failed to find the solution to this particular problem, so
I thought I'd post the fix to this (particularly stupid)

Hi guys i am having one probem, my date object  prints the in the
format  Sat Oct 22 00:00:00 IST 2005 i want to convert this into
mm/dd/yyyy format, but the result must be the date object can anyone
please help, We  will get the string useing  SimpleDateFormatter

I'm trying to create a DatagramSocket to send broadcasts, but I'm
getting a
java.net.BindException: Cannot assign requested address: Cannot bind
on the call

How do I prevent the jar command from creating a .DS_Store file in the
jar that it creates? Alternatively, how do I remove (different from
extract) the .DS_Store file from a jar?
Thanks.

I have a string like this.
 String s = "a1234567.data.Paul";
How can I get the substring Paul?
I have tried this with no avail.

Does anyone know what drivers to use for Open Office ? I am using MAC
OSX and do not have ODBC...
Class.forName("OpenOffice.Driver");
           String url = "jdbc:OpenOfficexxxxxxxx";

Jave newbie problem:
My scroll bar is not showing up at all. What an I doing wrong?
The menu and toolbar are working fine.
public class Example extends JPanel

I'm trying to draw a grid on a JLayeredPane. My JPane contains a menu,
a toolbar and the layered pane.
What happens is the grid flashes briefly on the screen then disappears.
Then, when I resize the window by dragging the border the grid flashes

I have a little problem but big for me L
I use javax.mail for sending and receiving emails in my client application.
I used props.put("mail.smtp.auth", "true") and everything works fine.
But I have problem because I have to use smtp authorization and proxy

Hi,I hope someone will help me because I have a problem. I have 2
files.txt. I have to take one element contained in a row of the first
file and find it in the second file.
If in the second file I find the element I want copy the row in which