Yeah. I know... I suck and I should 'learn how to google'...
I need help edit strings.
I have a string that is lastname,firstname
What command is used to delete everything up to the comma?

      I have a ActionForm, i am having get and set methods on a
variable. I set this ActionForm in session and after I retrive the
value of the variable using the get method, I want to make the value of
this variable to null. When i do actionForm.setAbc(null), I got run

I want to use Struts Tiles to do this:
<tiles:insert attribute="${something}" />
It doesn't work, I get following exception:
javax.servlet.jsp.JspException: ServletException in

I have an ant build file that uses third party java package to compile
my java codes. I can run ant manually in DOS command line without any
problem, this is because I add the path and name of the third party
package into CLASSPATH environment variables. However, when I run the

I am in serious trouble with my project and stuck on this part for
several days now.
I am using jsp (a quite new technology to me) and trying to create a
form with a pending holding action which loops back to the form.

In my office at the university, I usually work on a linux computer. I
also have a personal notebook computer, which runs Windows XP. I have
installed Tomcat server in the notebook. Open a web browser in the
Windows XP computer and type in URL: http://localhost:8080 shows that

Hi to everyone,
When we say java is an object oriented language, I guess everyone will
agree then, my question is why do we have integer data type as int in
java which does not fit into object oriented scenario.

Can someone explain what I have done wrong and how can it be corrected?
MyQueue.java:37: warning: [unchecked] unchecked call to add(E) as a member
of the raw type java.util.ArrayList
     list.add(tmp);

I wonder if anyone can explain me the concept of  virtual hosting to me
in detail .I did some reserach some how it was not very clean to me.
Also, I haven't used jdk 1.5 so, if anyone can tell me new features of
java which are available in 1.5

how do i know that the string which i have is in the my desired  format
.
My format is z:y:x
where z,x,y are integers.

I would like to be able to draw a number of polygons as a
representative diagram of some coordinate data on a JPanel and then
when the mouse is moved over one of the polygons (into the area it
bounds) generate some event so that information in another JPanel is

Ok, I'm afraid I haven't got any source code or anything for this
because I've only just started writing this method and I'm a bit
stuck!!!
Basically, I have an XML file which may have any number of 'Layer'

I have a string thats been appended by a StringBuffer. It look as
follows:
091801_0.024_0~092708_0.0247_0~092734_0.025_0~092758_0.025_0~093014_0.025_0~093017_0.025_0~093017_0.025_0~
now its composed into three parts all speerated by "_" and ~ marks the

I'm trying to validate some XML against a schema.  The code I have
works but it won't give me any useful information for where the error
is in the XML.  I can get useful information (line numbers) if there
are problems when loading the schema and XML.  However, the exceptions

Does anyone know how to calculate the height of a tree structure?  The
height should be for the maximum size branch.  My tree is mad up with
nodes that have a getLeft and getRight method.   getLeft and getRight
return the reference to the node in that position, or null if there