ode>NullPointerException</code> will be
thrown.</p><p>
As an example of scanner integration, the following three lines in the
lexer-generator input are all that is required to use a 
<a href="http://www.cs.princeton.edu/%7Eappel/modern/java/JLex/">JLex</a>
scanner with CUP:
</p><pre>%implements java_cup.runtime.Scanner
%function next_token
%type java_cup.runtime.Symbol
</pre>
It is anticipated that the JLex directive <code>%cup</code> will
abbreviate the above three directive in the next version of JLex.
In