I am newbie to Java, am trying to get a program working, and I have
imported the java packages below along with many other imports :
import javax.servlet.GenericServlet;
....

What does it mean when a ";" is inserted after an if statement?
if (x == 2){
   System.out.println("x = 2");
};

I have the following selectbox in my jsp page:
<select name="myNumber">
<option value="1">One
<option value="2">Two

There are many situations when one has a Class for
which it only makes sense that a single instance be
created in a given session.  It seems to me that, in
this situation, it does not really make much

Hi again,
does anyone know how to clear the screen where I wrote comments with
System.out.prinln("..."); ?
TIA

I am trying to code my application to benefit from running on a parallel
machine but it is not any faster.  I think I have some data which is too
synchronized so I am looking to avoid this.  I have a Vector which stores
some data but I use toArray() to get the data as an Object ...

Hi newsgroup,
I have a little problem with a method that tries to use another method in
another class.
So far this method receives an ArrayList as follows:

Is there any peephole optimizer for Java, be it for .class files
or assembly files (e.g., Jasmin or Oolong)?
Thanks.
Napi

I recently installed NetBeans 4.1 and the latest JDK (build 1.5.0_03-b07).
I have been working out of a text book from SNHU programming an applet that is a calculator.  My problem is when the applet executes, both in the browser and applet viewer, the paint method goes into a ...

I want to retrieve the device information to know wheter it supports MIDP
1.0 only, MIDP 1.0.3, or MIDP 2.0. I know that we can use
System.getProperty("microedition.profiles"), but the result tells only if
it is MIDP 1.0 or MIDP 2.0, not any information if it is MIDP 1.0.3.

Is there a way to avoid a ClassCastException when there is no real changes
made to the class, but the java-file has been compiled anyway?
I'm writing a J2ee web application, and I store a HashMap of User objects as
an attribute in the servlet context. Now, if the User class gets ...

I have an applet and I want to be able to change its parameters with a
button or a link from a HTML page.
How can I do it?
For example:

Right now I'm using the good ol' System.out.Println to print out to the
screen, whenever a certain variable changes. If it changes a lot, it
uses up an awful lot of lines though. Is there a way to reuse the same
line to that output so whenever it changes, it'll just overwrite the ...

After switching computers and doing a fresh Win XP install on the new
one, including IE 6.0.29 and Java 1.5.0, I noticed lots of problems
viewing the old web pages with heavy java applications that I used to
be able to view without the slightest problem with the other computer.

I have a very old laptop (486 - 4mb ram) that I want to write simple
java programs on.  Is there any version of Java for Dos still out there?
Thanks