Prentice Hall and Sun Microsystems. Personal use only; do not redistribute.

16.6 Combo Boxes and List Boxes

411

Figure 16 17 Choosing options from a SELECT menu.

The second example shows a 

SELECT

 element rendered as a list box. If

more than one entry is active when the form is submitted, then more than

one value is sent, listed as separate entries (repeating the 

NAME

). For instance,

in the example shown in Figure 16 18, 

language=java&language=perl

gets added to the data being sent to the server. Multiple entries that share the

same name is the reason servlet authors need be familiar with the 

getParam 

eterValues

 method of 

HttpServletRequest

 in addition to the more com 

mon 

getParameter

 method. See Chapter 3 (Handling the Client Request:

Form Data) for details.

Languages you know:

  C
  C++
  Java
  Lisp
  Perl
  Smalltalk