bayard 2003/07/30 16:58:36 Modified: lang DEVELOPERS-GUIDE.html Log: Added note that IllegalArgumentException should be thrown when a bad argument of 'null' is passed in and not NullPointerException. Also a note that XxxUtils classes should suppress Exceptions when sensible. Revision Changes Path 1.3 +8 -1 jakarta-commons/lang/DEVELOPERS-GUIDE.html Index: DEVELOPERS-GUIDE.html =================================================================== RCS file: /home/cvs/jakarta-commons/lang/DEVELOPERS-GUIDE.html,v retrieving revision 1.2 retrieving revision 1.3 diff -u -r1.2 -r1.3 --- DEVELOPERS-GUIDE.html 30 Jul 2003 23:54:33 -0000 1.2 +++ DEVELOPERS-GUIDE.html 30 Jul 2003 23:58:36 -0000 1.3 @@ -59,6 +59,8 @@ <li>deal with one class or interface and its variations (subclasses)</li> <li>provide methods that perform useful utility functions</li> <li>the class will not be final</li> +<li>methods should generally be 'nice' and 'quiet'. That is, they should +suppress Exceptions when sensible. </li> </ul> <p>A utility class can act as a factory for specific implementations of a class or @@ -99,6 +101,11 @@ <p>If an example is needed enclose it with <pre></pre>. It should be supported with an explanation within a normal paragraph.</p> + +<h4>Exception throwing</h4> +<p>When throwing an exception to indicate a bad argument, always throw +IllegalArgumentException, even if the argument was null. Do not throw +NullPointerException. </p> </body> </html>
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