What does it mean to "endorse" a library in Java?
<p>I am a Java newbie and read an article (https://wiki.shibboleth.net/confluence/display/OpenSAML/OSTwoUsrManJavaInstall) which stated that the only known JAXP providers to work are the Apache Xerces &amp; Xalan projects and that I must endorse a different JAXP.</p>

<p>What does it mean to "endorse" a library in Java?  </p>

<p>I am most familiar with c/c++/c#.  What would the equivalent action be in any of these environments?</p>
